![]() Eastern Mojave Vegetation | Images -- Species - Asteraceae |
By Tom Schweich |
![]() Unclassified Geography - Idaho Geography - Park County, CO Geography - Summit County, CO Geography - Arizona Geography - British Columbia Geography - California Geography - California's Colorado Desert Alaska Geography - Mono Lake Basin, California Geography - Mono County, California Geography - San Luis Obispo County, California Geography - Santa Clara County Alameda Garden Geography - Central Mojave Geography - New Mexico Geography - Eastern Mojave Geography - Northern Mojave Geography - Colorado Geography - Alamosa County, CO Geography - Boulder County, CO Geography - Clear Creek County, CO Geography - Chaffee County, CO Geography - Gilpin County, CO Geography - Golden, Colorado Geography - Weld County, CO Geography - Hinsdale County, CO Geography - Jefferson County, CO Geography - North Table Mountain, Jefferson Cty, CO Geography - Larimer County, CO Geography - Nevada Geography - Oregon Geography - Utah Geography - Virginia Geography - Washington Geography - Wyoming Spain - Andalucia Spain - Castilla y Leon Spain - Castilla-La Mancha Spain - Extremadura Spain - Galicia Spain - Madrid Portugal Geology Economic Geology Climatology Botany Salvia dorrii Frasera albomarginata Species Species - Polygonaceae Species - Brassicaceae Species - Rosaceae Species - Fabaceae Species - Boraginaceae Species - Asteraceae Species - Poaceae Zoology Ecology Archeology Customer Satisfaction General Arizona California Kansas Missouri Nebraska New York Christmas 2002 Family Photos Family Documents Family Photos 2003 Art of Lydia Schweich Portraits Railroad |
Images are organized by the topics listed at left. Click on a topic name to see images with that topic. Would you like to use these photographs in your school term paper or report? License is hereby granted for non-commercial use of the images contained herein provided that the images are reproduced with the copyright notice intact. This means that we give you our permission to use the photographs and information you find here in your school term papers and reports. You may resize the photograph to fit your needs, but you may not remove the copyright. Your term paper should note that the photographs are reproduced with permission and it should have a reference to this web site, such as: "Photograph ©1999 Tom Schweich. Used by permission, http://www.schweich.com" If you have a comment or a question about a photograph you may write to me at tas4@schweich.com I will answer you as soon as I can. I sometimes post interesting questions in my FAQ, but I will not disclose your full name or address.
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Coll. No. 1293, Asteraceae | Photographed 9 September 2015.
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images/IMGQ1639sm.jpg Achillea millefolium
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Collection No. 503, Achillea millefolium | Scanned 13 March 2011. Background grid is 10 x 10 to the inch.
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Coll. No. 482, Achillea millefolium | The grid spacing is 1/4 inch.
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Achillea millefolium, Collection No. 503 | Photograph taken August 2, 2007 beside Bohler Creek.
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Habitat of Coll. No. 1485, Achillea millefolium | Photographed 6 July 2016.
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Creekside habitat of Coll. No. 1251, Achillea millefolia | Photographed 26 July 2015.
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images/IMGQ1395sm.jpg Achillea millifolium
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Inflorescence of Coll. No. 2083, Achillea millifolium | Scanned 15 October 2019.
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Coll. No. 2083, Achillea millifolium | Photographed 15 October 2019.
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images/IMGQ5054sm.jpg Acroptilon repens
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Max Lichter photograph of Acroptilon repens | ©Max Lichter (CC BY-SA). Locality: unknown. URL: http://swbiodiversity.org/seinet/imagelib/imgdetails.php?imgid=19261 Accessed: 11 April 2020. Images are made available on SEINet under the Creative Commons Attribution-ShareAlike (CC BY-SA).
Article records that use this photograph:
images/280Acrrep_Lichter.jpg Agoseris glauca
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Coll. No. 631, Agoseris glauca var. glauca, collected at Sagehen Meadow. | Photograph taken 5 July 2010.
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Coll. No. 631, Agoseris glauca var. glauca, collected at Sagehen Meadow. | Photograph taken 5 July 2010.
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Coll. No. 631, Agoseris glauca var. glauca, collected at Sagehen Meadow. | Photograph taken 5 July 2010.
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images/IMGP0292sm.jpg Agoseris parviflora
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Habitat of Coll. No. 1101, Agoseris parviflora | Photographed 3 May 2015.
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Coll. No. 1101, Agoseris parviflora | Scanned 15 Jul 2015.
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images/TAS011010Oview.jpg Ambrosia dumosa
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Overview of Coll. No. 1571, Ambrosia dumosa | Photographed 1 October 2017.
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Mix of staminate and pistillate flowers in inflorescence of Ambrosia dumosa | Scanned 1 October 2017. Coll. No. 1571, 18 April 2017, characters observed: Perennial shrub, to 40 cm.; Stem, woody, densely short strigose when young; Leaves, petiole 10 mm., blade 16 mm × 13 mm. wide, pinnately lobed, short strigose; Phyllaries (staminate flowers), fused at base, in 1 series, #7, eglandular, tip acute; Flowers, 2 kinds in different heads, staminate flowers, #15, pistilate flowers, #2; Pappus, 0; Style, 2-branched, fused(?); Fruit, bur, 6 mm. × 6 mm. wide, ±spheric, spines, #15, 2 mm.
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images/TAS015710Infl.jpg Ambrosia eriocentra
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Ambrosia eriocentra in the wash at Lobo Point. | Photographed November, 1990. Scanned 29 November 2020.
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Leaf of Ambrosia eriocentra in the wash at Lobo Point. | Photographed November, 1990. Scanned 29 November 2020.
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Ambrosia eriocentra Wooly Bursage | Wash at Lobo Point.
images/amberi.jpg Ambrosia psilostachya
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Coll. No. 1763, Ambrosia psilostachya | Photographed 12 January 2018
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Coll. No. 1069, Ambrosia psilostachya | Photographed 15 October 2014.
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Leaf of Ambrosia psilostachya | Scanned 18 October 2014.
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Coll. No. 1068, Ambrosia psilostachya | Photographed 8 October 2014.
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Coll. No. 1748, Ambrosia psilostachya | Photographed 8 January 2018.
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Pistillate flower of Ambrosia psilostachya | Scanned 18 October 2014.
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images/TAS010690PFl.jpg Ambrosia salsola salsola
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Coll. No. 2.3, Ambrosia salsola var. salsola | Scanned 10 October 2013. Coll. No. 2.3, 16 Apr 1993, characters observed while keying: Leaf blade linear to thread-like, Head, pistillate, phyllaries 2; Bur, palea tips membraneous wings, wings of bur 2.8 mm. wide.
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images/TAS000023Oview.jpg Anisocoma acaulis
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Coll. No. 824, Anisocoma acaulis | Photographed 31 May 2012.
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Coll. No. 824, Anisocoma acaulis | Scanned 26 January 2013.
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images/TAS008240Oview.jpg Antennaria
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Habitat of Coll. No. 1257, Pseudognaphalium macounii | Photographed 26 July 2015. Coll. No. 1257, 26 Jul 2015, characters observed: Annual (?) to 45 cm.; Leaves, cauline, alternate, 40 mm. × 4 mm. wide, decurrent, lance-linear, entire, stalked glandular, tomentose abaxially; Inflorescence, branched axial and terminal; Heads in tight clusters, disciform; Involucre, 4 mm.; Receptacle, epaleate; Phyllaries in 4+ series, hyaline; Pappus, bristles.
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images/IMGQ1401sm.jpg Antennaria parvifolia
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Flower parts of Coll. No. 2282, Antennaria parvifolia. | Scanned 30 October. The things to see here are: the phyllaries are green proximally and broadly white and scarious distally, the pappus is tangled, and the flowers appear to be staminate only.
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Habitat of Coll. No. 1128, Antennaria parvifolia | Photographed 1 June 2015. The large herbs growing out of the grasses are Frasera speciosa.
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Dissection of Coll. No. 1909, Antennaria parvifolia | Photographed 29 November 2018. Coll. No. 1909, 31 May 2018, characters observed: Perennial herb, to 10 cm., stoloniferous; Stem, tomentose; Leaves, basal and cauline, basal, petiole, gradually expanding into blade, blade, 16 mm. × 6.7 mm. wide, oblanceolate, entire, glandular, tomentose, tips, pointed, cauline, 10 mm. × 2 mm. wide, linear; Inflorescence, heads enclosed by an involucre, #3 per stem, not showy; Involucre, 7 mm. × 4.5 mm. wide, cylindric; Phyllaries, 5+ series, 4 mm. × 2 mm. wide to 8 mm. × 1 mm. wide, green proximally to white (pinkish) distally, tomentose, margins, flat, scarious, tips, rounded; Receptacle, epaleate; Flowers, of 1 kind; Disk flowers, many, 6.5 mm., white; Pappus, many, well-developed, bristles, 8 mm., ±equal; Cypsela, 0.8 mm. × 0.3 mm. wide, brown, glabrous.
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Coll. No. 1909, Antennaria parvifolia | Scanned 29 November 2018. Coll. No. 1909, 31 May 2018, characters observed: Perennial herb, to 10 cm., stoloniferous; Stem, tomentose; Leaves, basal and cauline, basal, petiole, gradually expanding into blade, blade, 16 mm. × 6.7 mm. wide, oblanceolate, entire, glandular, tomentose, tips, pointed, cauline, 10 mm. × 2 mm. wide, linear; Inflorescence, heads enclosed by an involucre, #3 per stem, not showy; Involucre, 7 mm. × 4.5 mm. wide, cylindric; Phyllaries, 5+ series, 4 mm. × 2 mm. wide to 8 mm. × 1 mm. wide, green proximally to white (pinkish) distally, tomentose, margins, flat, scarious, tips, rounded; Receptacle, epaleate; Flowers, of 1 kind; Disk flowers, many, 6.5 mm., white; Pappus, many, well-developed, bristles, 8 mm., ±equal; Cypsela, 0.8 mm. × 0.3 mm. wide, brown, glabrous.
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images/TAS019090Oview.jpg Antennaria rosea
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Coll. No. 1083, Antennaria rosea | Scanned 14 June 2015. Coll. No. 1083, 25 April 2015, characters observed: Perennial herb, to 9 cm., stoloniferous 4-5 cm., forming loose mats in wet muddy soil, all sixteen plants collected pistillate (gynoecious?); Leaves, simple, white tomentose both sides, basal, 35 mm. × 9 mm wide, oblanceolate, cauline, 11-13 mm., linear; Inflorescence, >> basal leaves; Involucre, 5.5-7.0 mm.; Bracts (phyllaries), 5.0-6-5 mm. × 1.1-0.7 mm. wide, green at base, purplish band in middle, tips, white, scarious.
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Rosette of Antennaria rosea. | Photographed 9 September 2015.
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Mat-forming rosettes, probably Antennaria rosea | Photographed 9 September 2015.
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images/IMGQ1628sm.jpg Arctium minus
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Coll. No. 2425, Arctium minus. | Photographed 29 December 2020.
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images/IMGQ5291sm.jpg Arnica chamissonis
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Coll. No. 510, Arnica chamissonis | Scanned 17 March 2011. Background grid is 10 x 10 to the inch. Coll. No. 510, 2 Aug 2007, characters observed: Herbaceous perennial, 60 cm.; Stem, proximal axils white hairy; Leaves opposite, petiole 65 mm, blade 68 mm. × 15 mm. wide, length 4.5 × width; Inflorescence 2-3 heads; Heads, 2 kinds of flowers; Phyllaries in 2 series, 8 mm., outer ≥ inner, stalked glandular, adaxial face glabrous, hair tufted near tip, tip acute; Receptacle epaleate; Ray corolla yellow; Disc corolla should be stalked-glandular but can't see; Pappus of well-developed bristles on both kinds of flowers, 6 mm., white, short plumose; Achene, sparsely glandular.
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images/TAS005100oview.jpg Arnica fulgens
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Woolly hairs in axils of basal leaves of Coll. No. 2038, Arnica fulgens | Scanned 31 July 2019.
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Coll. No. 1371, Arnica fulgens | Photographed 29 May 2016.
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Coll. No. 1119, Arnica fulgens | Scanned 24 September 2015.
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Flower head of Coll. No. 1371, Arnica fulgens | Scanned 24 November 2016. Perennial herb of wetlands or moist areas, to 35 cm., glandular hairy throughout; Leaves, mostly basal and few cauline, basal, axils with 5 mm. brown wavy hair, petiole 70 mm. + blade 60 mm. × 12 mm. wide, 5 × longer than wide, cauline, opposite, sessile, ±2 pair, much reduced; Inflorescence, single heads on peduncle to 80 mm., flowers of two kinds; Involucre, 13 mm. × 22 mm. wide; Phyllaries, 2 ±equal series, 11-12 mm.× 3 mm. wide, green with dark tips; Receptacle epaleate; Rays, #12, fertile, tube 3 mm. + blade 16 mm. × 7 mm. wide = 19 mm., corolla yellow; Disc flowers, tube 7 mm. + lobes ≤1 mm. = 8 mm.; Pappus, bristles, 9 mm., white; Anther, yellow; Achene, 5 mm., short hairy. Described from Coll. No. 1119, 28 May 2015, and Coll. No. 1371, 29 May 2016. Subtribe Arnicinae is a subtribe to Madiinae (tarweeds) and Hulseinae, which contains both Hulsea and Eatonella, both common in the Mono Lake basin.
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Coll. No. 1119, Arnica fulgens | Scanned 24 September 2015.
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images/TAS011190Oview.jpg Arnica mollis
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Coll. No. 2006, Arnica mollis | Photographed 27 January 2019.
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images/IMGQ4860sm.jpg Arnica parryi
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Coll. No. 2010, Arnica parryi | Photographed 27 January 2019.
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images/IMGQ4866sm.jpg Arnica sororia
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Coll. No. 692, Arnica sororia | Scanned 10 Nov 2011. Coll. No. 692, 10 Nov 2011, characters observed while keying: Perennial spreading by rhizomes; Leaves opposite, cauline 4 pairs, reduced above, w/o embedded oil glands; Involucre 10 mm, 12 mm dia.; Receptacle naked; Phyllaries ~14, in one series, 9 mm, w/o embedded oil glands; Rays ~ 12, yellow, 15 mm, strap 10 mm x 3 mm wide; Disc flowers ~40, yellow, 6 mm, 2 mm wide; Achenes black, 3 mm, pappus of hairs, white, short-barbed.
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Coll. No. 692, Arnica sororia | Scanned 10 Nov 2011. Coll. No. 692, 10 Nov 2011, characters observed while keying: Perennial spreading by rhizomes; Leaves opposite, cauline 4 pairs, reduced above, w/o embedded oil glands; Involucre 10 mm, 12 mm dia.; Receptacle naked; Phyllaries ~14, in one series, 9 mm, w/o embedded oil glands; Rays ~ 12, yellow, 15 mm, strap 10 mm x 3 mm wide; Disc flowers ~40, yellow, 6 mm, 2 mm wide; Achenes black, 3 mm, pappus of hairs, white, short-barbed.
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Coll. No. 692, Arnica sororia | Scanned 10 Nov 2011. Coll. No. 692, 10 Nov 2011, characters observed while keying: Perennial spreading by rhizomes; Leaves opposite, cauline 4 pairs, reduced above, w/o embedded oil glands; Involucre 10 mm, 12 mm dia.; Receptacle naked; Phyllaries ~14, in one series, 9 mm, w/o embedded oil glands; Rays ~ 12, yellow, 15 mm, strap 10 mm x 3 mm wide; Disc flowers ~40, yellow, 6 mm, 2 mm wide; Achenes black, 3 mm, pappus of hairs, white, short-barbed.
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Arnica sororia in Sagehen Meadow. | Photograph taken 26 July 2010 in Sagehen Meadow.
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Coll. No. 692, Arnica sororia | Scanned 10 Nov 2011. Coll. No. 692, 10 Nov 2011, characters observed while keying: Perennial spreading by rhizomes; Leaves opposite, cauline 4 pairs, reduced above, w/o embedded oil glands; Involucre 10 mm, 12 mm dia.; Receptacle naked; Phyllaries ~14, in one series, 9 mm, w/o embedded oil glands; Rays ~ 12, yellow, 15 mm, strap 10 mm x 3 mm wide; Disc flowers ~40, yellow, 6 mm, 2 mm wide; Achenes black, 3 mm, pappus of hairs, white, short-barbed.
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Habitat of Arnica sororia in Sagehen Meadow. | Photograph taken 26 July 2010 in Sagehen Meadow.
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Arnica sororia in Sagehen Meadow. | Photograph taken 26 July 2010 in Sagehen Meadow.
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images/IMGP0669sm.jpg Artemisia campestris
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Inflorescence of Coll. No. 1767, Artemisia campestris | Photographed 13 January 2018. Coll. No. 1767, 1 Sep 2017, characters observed: Perennial herb, to 60 cm., longer lived than biennial; Stem, 4± per caudex, reddish; Leaves, basal mostly withered, cauline, 8 mm. × 0.6 mm. wide, narrowly oblanceolate, tomentose; Inflorescence, 130 mm. × 20 mm. wide; Heads, many, 2 mm. × 2 mm. wide; Phyllaries, 2+ series, 1.5 mm. × 1 mm. wide, green to scarious; Receptacle, naked.
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Coll. No. 1767, Artemisia campestris | Photographed 13 January 2018. Coll. No. 1767, 1 Sep 2017, characters observed: Perennial herb, to 60 cm., longer lived than biennial; Stem, 4± per caudex, reddish; Leaves, basal mostly withered, cauline, 8 mm. × 0.6 mm. wide, narrowly oblanceolate, tomentose; Inflorescence, 130 mm. × 20 mm. wide; Heads, many, 2 mm. × 2 mm. wide; Phyllaries, 2+ series, 1.5 mm. × 1 mm. wide, green to scarious; Receptacle, naked.
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images/IMGQ4542sm.jpg Artemisia cana bolanderi
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Coll. No. 716, Artemisia cana var. bolanderi | Scanned 20 Nov 2011. Coll. No. 715, 20 Nov 2011, characters observed while keying: Subshrub woody at base, 30-35 cm tall, unarmed; Leaves linear, entire, 15 mm, < 2 mm wide; Heads erect, 3 mm dia. (less than 5 mm per TJM1, 2, & D).
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images/TAS007150Oview.jpg Artemisia dracunculus
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Coll. No. 1754, Artemisia dracunculus | Photographed 10 January 2018.
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Coll. No. 1754, Artemisia dracunculus | Scanned 10 January 2018.
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images/TAS017540Infl.jpg Artemisia frigida
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Coll. No. 1067, Artemisia frigida | Scanned 8 October 2014.
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Coll. No. 1067, Artemisia frigida | Scanned 8 October 2014.
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Coll. No. 1067, Artemisia frigida | Photographed 8 October 2014.
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images/IMG40585sm.jpg Artemisia ludoviciana
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Something is parasitizing my Artemisia | Scanned 13 Jun 2020.
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Coll. No. 1281, Artemisia ludoviciana | Photographed 15 January 2016 In Weber & Wittmann (2012) and Ackerfield (2015) will key to Artemisia ludoviciana Nutt. var. ludoviciana, because of the entire leaves. However, in FNANM, revolute margins lead one away from subsp. ludoviciana, perhaps in the direction of subsp. mexicana (Willdenow ex Sprengel) D. D. Keck. Most of the collections of A. ludoviciana Nutt. in Jefferson County, Colorado, are undetermined as to infraspecific taxa, and considerable variation in leaf margins and lobes can be seen in the specimens.
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Entire leaves of Coll. No. 1281, Artemisia ludoviciana | Scanned 15 January 2016. The leaf margins are entire and revolute. In Weber & Wittmann (2012) and Ackerfield (2015) this collection will key to Artemisia ludoviciana Nutt. var. ludoviciana, because of the entire leaves. However, in FNANM, revolute margins lead one away from subsp. ludoviciana, perhaps in the direction of subsp. mexicana (Willdenow ex Sprengel) D. D. Keck. Most of the collections of A. ludoviciana Nutt. in Jefferson County, Colorado, are undetermined as to infraspecific taxa, and considerable variation in leaf margins and lobes can be seen in the specimens.
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images/TAS012810Lvs.jpg Artemisia ludoviciana ludoviciana
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Coll. No. 898, Artemisia ludoviciana ssp. ludoviciana | Scanned 25 August 2013. Coll. No. 898, 24 August 2012, characters observed while keying: Perennial herb, to 40 cm, unarmed, spreading by rhizomes; Leaf tomentose abaxially, sparse tomentose adaxially, proximal wedge-shaped, 40 mm × 15 mm wide, 3+-toothed, ≤⅓ leaf-width, distal lanceolate, entire; Frequency and depth of leaf lobing distinguishes between ssp. ludoviciana and ssp. incompta. These leaves are neither 2°-divided, nor deeper than ⅓-width, nor divided nearly to the mid-rib. Therefore, ssp. ludoviciana is applied rather than ssp. incompta.
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Coll. No. 898, Artemisia ludoviciana ssp. ludoviciana | Photographed 25 August 2013. Coll. No. 898, 24 August 2012, characters observed while keying: Perennial herb, to 40 cm, unarmed, spreading by rhizomes; Leaf tomentose abaxially, sparse tomentose adaxially, proximal wedge-shaped, 40 mm × 15 mm wide, 3+-toothed, ≤⅓ leaf-width, distal lanceolate, entire; Frequency and depth of leaf lobing distinguishes between ssp. ludoviciana and ssp. incompta. These leaves are neither 2°-divided, nor deeper than ⅓-width, nor divided nearly to the mid-rib. Therefore, ssp. ludoviciana is applied rather than ssp. incompta.
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images/IMG_1630sm.jpg Bahiopsis parishii
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Coll. no. 246, Bahiopsis parishii | Scanned 15 Jan 2014. Coll. No. 246, 5 June 2000, characters observed: Perennial (assumed), to 40 cm.; Leaves, basal unknown, cauline present; Phyllaries, in 2 series, ±equal, abruptly narrowed at middle, not subtending ray flowers; Receptacle, flat, paleate, palea folded around disk flower ovary; Flowers, of two kinds, heads radiate; Rays, yellow, sterile, style 0, pappus of short scales; Disk, pappus of short scales and 2 long scales; Fruit, compressed, hairy, but margin not ciliate.
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images/TAS002460Oview.jpg Baileya multiradiata
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Partially dissected head of Coll. No. 291, Baileya multiradiata | Scanned 26 Jan 2014. Coll. No. 291, 26 May 2001, characters observed: Perennial, to 50 cm., gray tomentose; Leaves, alternate, petiole 40 mm. + blade 25 mm., ovate, pinnate-lobed; Inflorescence, composed of 2 kinds of flowers, Head, hemispheric, radiate; Phyllaries, in 2 series, ±equal, erect, overlapping, long spreading hairs; Receptacle epaleate; Ray, #32+, corolla, 13 mm., yellow, prominently 3-lobed, persistent when dry, papery, reflexed; Pappus, 0; Fruit, achene, ±smooth (minutely papillate on ribs).
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Coll. No. 337.1, Baileya multiradiata | Photographed 24 October 2013. Coll. No. 337.1, 20 Apr 2004, characters observed while keying: Annual (biennial or short-lived perennial), to 40 cm., ±gray-tomentose, scapose; Leaves alternate; Inflorescence, heads solitary, flowers of two kinds, some with strap-shaped corollas; Involucre 6 mm.; Phyllaries, in 2+ series, slightly overlapping, ±equal, erect; Receptacle, hemispheric, epaleate; Pappus 0; Ray flowers, many, corolla, yellow, 13 mm. × 9 mm. wide, 3-lobed, when dry persistent papery reflexed; Fruit achene, 3.5 mm., ±equally ribbed.
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Lower leaf of Coll. No. 291, Baileya multiradiata | Scanned 26 Jan 2014. Coll. No. 291, 26 May 2001, characters observed: Perennial, to 50 cm., gray tomentose; Leaves, alternate, petiole 40 mm. + blade 25 mm., ovate, pinnate-lobed; Inflorescence, composed of 2 kinds of flowers, Head, hemispheric, radiate; Phyllaries, in 2 series, ±equal, erect, overlapping, long spreading hairs; Receptacle epaleate; Ray, #32+, corolla, 13 mm., yellow, prominently 3-lobed, persistent when dry, papery, reflexed; Pappus, 0; Fruit, achene, ±smooth (minutely papillate on ribs).
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images/TAS002910Lf.jpg Balsamorhiza sagittata
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Voucher of Coll. No. 2252, Balsanorhiza sagittata | Photographed 16 November 2020.
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Coll. No. 2252, Balsamorhiza sagittata | Photographed 30 April 2020.
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Coll. No. 2252, Balsamorhiza sagittata | Photographed 30 April 2020.
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Flowers (Balsamorhiza sagittata) along road in burned area. | Photograph taken 15 Jul 2010.
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Collection No. 782, Balsamorhiza sagittata | Photograph taken 22 June 2011.
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Inflorescence head of Coll. No. 1109, Balsamorhiza sagittata | Scanned 31 August 2015.
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Coll. No. 956, Balsamorhiza sagittata | Photographed 22 May 2013.
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Disc flowers of Coll. No. 1109, Balsamorhiza sagittata | Scanned 31 August 2015. (a) Disarticulated disc flower with stamens and stigmas.
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Arrow-Leaf Balsamroot (Balsamorhiza sagittata in bloom along F. R. 01N17 | Photographed 20 May 2013.
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Coll. No. 782, Balsamorhiza sagittata | Scanned 24 Jan 2012.
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Coll. No. 956, Balsamorhiza sagittata | Scanned on Groundhog's Day, 2 Feb 2014. Coll. No. 956, 22 May 2013, characters observed: Perennial herb, to 50 cm.; Leaves, mostly basal, 20 cm. × 12 cm, widely triangular, base sagittate, tomentose, cauline much reduced; Inflorescence, radiate, composed of 2 kinds of flowers, some strap-shaped; Phyllaries, in 2+ series, not all subtending ray flowers, eglandular, bases tomentose; Receptacle, paleate; Paleae, folded, partially surrounding disk flower ovary; Rays, yellow, fruiting, fruit 9 mm. + corolla 32 mm. × 11 mm.; Pappus 0.
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Coll. No. 1109, Balsamorhiza sagittata | Scanned 31 August 2015.
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Coll. No. 1109, Balsamorhiza sagittata | Photographed 14 May 2015.
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