Comments
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fornecido por eFloras
Chaenactis douglasii is widespread and variable (see discussion under var. douglasii).
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
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Inglês
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fornecido por eFloras
Biennials or perennials, (2–)5–50(–60) cm (rarely slightly woody or flowering first year, sometimes cespitose or ± matted); proximal indument thinning with age, grayish, mostly arachnoid-sericeous to thinly lanuginose. Stems 1–25+, erect to spreading. Leaves basal, or basal (sometimes withering) and ± cauline, (1–)2–12(–15) cm; largest blades ± elliptic or slightly lanceolate to ovate, ± 3-dimensional, usually 2-pinnately lobed; primary lobes (4–)5–9(–12) pairs, ± congested, scarcely imbricate, ultimate lobes ± involute and/or twisted. Heads 1–25+ per stem. Peduncles mostly ascending to erect, 1–10 cm. Involucres obconic to ± hemispheric. Phyllaries: longest 9–15(–17) mm; outer usually stipitate-glandular (sometimes sparsely or obscurely, rarely eglandular) and, often, arachnoid to lanuginose and, sometimes, sparsely villous, apices usually ± squarrose, pliant. Corollas 5–8 mm. Cypselae 5–8 mm (usually sparsely glandular amidst other indument); pappi: longest scales 3–6 mm.
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Synonym
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Inglês
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fornecido por eFloras
Hymenopappus douglasii Hooker, Fl. Bor.-Amer. 1: 316. 1833; Macrocarphus douglasii (Hooker) Nuttall
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Comprehensive Description
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Inglês
)
fornecido por North American Flora
Chaenactis douglasii (Hook.) H. & A. Bot. Beech. Voy. 354
1838.
Hymenopappus Douglasii Hook. Fl. Bor. Am. 1: 316. 1833.
Hymenopappus scahlosaeus Dougl.; Hook. Fl. Bor. Am. 1: 316, as synonym. 1833. Hymenopappus scabioneus Dougl.; Steud. Nom. Bot. ed. 2. I: 784. 1840. Macrocarphus Douglasii Nutt. Trans. Am. Phil. Soc. II. 7: 376. 1841.
A biennial or short-lived perennial; stem 2-4 dm. high, floccose when young, usually simple below, corymbosely branched above, or rarely a few stems from the crown of the taproot; leaves 5-10 cm. long, bipinnatifid with spreading oblong, entire or toothed, short divisions, floccose when young, in age glabrate; heads several; peduncles 1-3 cm. long; involucre about 10 mm. long, 10-15 mm. wide, at first floccose, glandular-hirsute; bracts in 3 series, linear, obtuse, all appressed, the outer shorter; corollas white, all alike, glandular-puberulent, 6-7 mm. long; achenes 6-7 mm. long, hirsute; squamellae about 8, linear-obtuse, unequal in length, 3-5 mm. long.
Type locality: Sandy ground of the Columbia, from the Great Falls to the Rocky Mountains [Washington].
Distribution: Alberta and British Columbia to New Mexico and California.
- citação bibliográfica
- Per Axel Rydberg. 1914. (CARDUALES); CARDUACEAE; HELENIEAE. North American flora. vol 34(1). New York Botanical Garden, New York, NY
Comprehensive Description
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Inglês
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fornecido por North American Flora
Chaenactis humilis Rydberg, sp. nov
A low perennial with a taproot; stems several from the crown or branched near the base, floccose when young; leaves 2-5 cm. long, floccose, in age glabrate, oblanceolate in outline, pinnatifid with oblong round-lobed small divisions; involucre turbinate, 7-8 mm. high, 5-10 mm. broad; bracts 15-20, narrowly linear, obtuse, unequal, glandular-puberulent; corollas whitish, all alike, 6 mm. long, glandular-puberulent; achenes 5 mm. long, hirsute; squamellae about 8, oblong, obtuse, somewhat unequal, about 3 mm. long.
Type collected in Franklin Basin, Bear River Range, Idaho, July 24, 1910, C. P. Smith 2273 (herb. N. Y. Bot. Gard.).
Distribution: Western Wyoming and eastern Idaho.
- citação bibliográfica
- Per Axel Rydberg. 1914. (CARDUALES); CARDUACEAE; HELENIEAE. North American flora. vol 34(1). New York Botanical Garden, New York, NY
Comprehensive Description
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Inglês
)
fornecido por North American Flora
Chaenactis pumila Greene, Leaflets 2: 223. 1912
? Chaenactis Mainsiana Nelson & Macbride, Bot. Gaz. 56: 477. 1913.
A scapose perennial with a rootstock; leaves crowded at the base, broadly obovate in outline, 2-4 cm. long, twice pinnatifid with divergent, crowded segments, sparingly floccose, or in age glabrate, except the rachis; peduncles 2-4 cm. long, densely glandular; involucre turbinate, decidedly acute at the base, 10-12 mm. long and as broad, densely glandularhirsute, dark-red; bracts linear, acute, with 1 or 2 linear looser and shorter bracts below; corollas flesh-colored, about 6 mm. long; achenes 6-7 mm. long, hirsutulous; squamellae 4 mm. long, oblong, obtuse, unequal, the longer 4 mm. long.
Type locality: Sonora Pass, California.
Distribution: Sierra Nevada, Califo.rnia; mountains of eastern Oregon (and Idaho?).
- citação bibliográfica
- Per Axel Rydberg. 1914. (CARDUALES); CARDUACEAE; HELENIEAE. North American flora. vol 34(1). New York Botanical Garden, New York, NY
Comprehensive Description
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Inglês
)
fornecido por North American Flora
Chaenactis brachiata Greene, Leaflets 2: 224. 1912
A short-lived perennial; stem 2-4 dm. high; leaves mostly at the base of the stem, 3-4
cm. long; blades obovate or broadly oval, pinnatifid into 15-19, approximate, spreading
divisions, again pinnatifid or toothed, white-tomentose ; stem-leaves few and somewhat smaller;
heads 3-6, corymbose; lateral peduncles 5-10 cm. long, usually spreading at the base and
curs'ed upwards with erect heads; involucre turbinate, about 12 mm. high, 12-15 mm. broad,
viscid-hirsute; bracts linear, acute or the outer obtuse; corollas dullwhite, 6-7 mm. long,
puberulent; achenes 7 mm. long, puberulent; squamellae 8, oblong, unequal, obtuse, 3-4 mm.
long.
Type locality: Springdale, Utah. Distribution: Utah.
- citação bibliográfica
- Per Axel Rydberg. 1914. (CARDUALES); CARDUACEAE; HELENIEAE. North American flora. vol 34(1). New York Botanical Garden, New York, NY
Chaenactis douglasii
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Inglês
)
fornecido por wikipedia EN
Chaenactis douglasii is a North American species of flowering plant in the daisy family known by the common name Douglas' dustymaiden.
The flower head is discoid with 50 to 70 white or pinkish disk flowers.
[2]
Description
Chaenactis douglasii is a variable herb, generally a perennial. It grows erect to 10–60 centimetres (4–24 inches), with one to many stems coated in cobwebby hairs. The woolly or hairy leaves may be up to 15 cm (6 in) long and are divided intricately into many lobes with curled or twisted tips. Stem leaves become smaller and stalkless upwards.[3][2][4][5]
The inflorescence produces one or more flower heads, each up to about 2 cm (3⁄4 in) long. The flower head is lined with flat, glandular, blunt-pointed phyllaries and contains several white or pinkish tubular disc flowers with protruding anthers.[3][6]
The fruit is an achene about 1 cm (3⁄8 in) long including its pappus of scales.[3]
- Varieties
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Chaenactis douglasii var. alpina A.Gray
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Chaenactis douglasii var. douglasii
Distribution
The plant is found in western Canada and the western United States from British Columbia to Saskatchewan, and south to California to New Mexico, with a few isolated populations in Nebraska and the Dakotas.[7] It grows in a wide variety of habitats, including harsh environments such as rock fields in alpine climates in the Sierra Nevada, east of the crest of the Cascade Range of Washington and Oregon, scrubland and desert, and disturbed areas such as roadsides. Distributed over a wide range of elevations, from sea level to 4,000 metres (13,000 feet), it is found most often between 1,800–2,400 m (6,000–8,000 ft).[8][9][10]
Uses
Some Plateau Indian tribes used this plant as a dressing for burns, wounds, and sores.[11]
References
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^ The Plant List, Chaenactis douglasii (Hook.) Hook. & Arn.
-
^ a b Klinkenberg, Brian, ed. (2020). "Chaenactis douglasii". E-Flora BC: Electronic Atlas of the Plants of British Columbia [eflora.bc.ca]. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. Retrieved 2020-09-22.
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^ a b c Flora of North America, Hoary pincushion, Douglas’s dustymaiden, Chaenactis douglasii (Hooker) Hooker & Arnott, Bot. Beechey Voy. 354. 1839.
-
^ Giblin, David, ed. (2020). "Chaenactis douglasii". WTU Herbarium Image Collection. Burke Museum, University of Washington. Retrieved 2020-09-22.
-
^ "Chaenactis douglasii". in Jepson Flora Project (eds.) Jepson eFlora. Jepson Herbarium; University of California, Berkeley. 2020. Retrieved 2020-09-22.
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^ Taylor, Ronald J. (1994) [1992]. Sagebrush Country: A Wildflower Sanctuary (rev. ed.). Missoula, MT: Mountain Press Pub. Co. p. 160. ISBN 0-87842-280-3. OCLC 25708726.
-
^ Biota of North America Program 2014 county distribution map
-
^ Calflora taxon report, University of California, Chaenactis douglasii (Hook.) Hook. & Arn., Chaenactis, Douglas' dustymaiden, hoary chaenactis
-
^ Sullivan, Steven. K. (2020). "Chaenactis douglasii". Wildflower Search. Retrieved 2020-09-22.
-
^ USDA, NRCS. (2020). "Chaenactis douglasii". The PLANTS Database. National Plant Data Team, Greensboro, NC 27401-4901 USA. Retrieved 2020-09-22.
-
^ Hunn, Eugene S. (1990). Nch'i-Wana, "The Big River": Mid-Columbia Indians and Their Land. University of Washington Press. p. 352. ISBN 0-295-97119-3.
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Chaenactis douglasii: Brief Summary
(
Inglês
)
fornecido por wikipedia EN
Chaenactis douglasii is a North American species of flowering plant in the daisy family known by the common name Douglas' dustymaiden.
The flower head is discoid with 50 to 70 white or pinkish disk flowers.
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- Wikipedia authors and editors
Chaenactis douglasii
(
Vietnamita
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fornecido por wikipedia VI
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Chaenactis douglasii: Brief Summary
(
Vietnamita
)
fornecido por wikipedia VI
Chaenactis douglasii là một loài thực vật có hoa trong họ Cúc. Loài này được (Hook.) Hook. & Arn. mô tả khoa học đầu tiên năm 1839.
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