dcsimg
Image of Chalk Hill hymenopappus
Creatures » » Plants » » Angiosperms » » Composite Family »

Chalk Hill Hymenopappus

Hymenopappus tenuifolius Pursh

Description

provided by eFloras
Biennials, 40–150 cm. Leaves 2-pinnate, 8–15 cm, lobes (3–)5–15+ × 0.5–1.5+ mm; cauline 8–30. Heads 20–200 per stem. Pedun-cles 1–5 cm. Phyllaries yellowish, 5–8 × 2–4 mm. Ray florets 0. Disc florets 25–50; corollas whitish, 2.5–3 mm, tubes 1.5–2.2 mm, throats campanulate, 0.8–1.5 mm, lengths 1.5–2 times lobes. Cypselae 3.5–4.5 mm, ± villous; pappi of 16–18 scales 1–1.5(–2) mm. 2n = 34.
license
cc-by-nc-sa-3.0
copyright
Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
bibliographic citation
Flora of North America Vol. 21: 310, 316 in eFloras.org, Missouri Botanical Garden. Accessed Nov 12, 2008.
source
Flora of North America @ eFloras.org
editor
Flora of North America Editorial Committee
project
eFloras.org
original
visit source
partner site
eFloras

Comprehensive Description

provided by North American Flora
Hymenopappus tenuifolius Pursh, Fl. Am. Sept. 742. 1814
A leafy-stemmed biennial; stem 3-7 dm. high, corymlwsely branched above, loosely floccose; leaves 2-10 cm. long, twice pinnatifid into fihform divi-sions, loosely floccose; involucre hemispheric, 5 mm. high, 7-8 mm. broad; bracts obovate, with yellow tips, floccose;. corollas light-yellow; tube about 1.5 mm. long; throat fully 1 mm. long; lobes ovate, somewhat
shorter; anthers only partly exsertcd; achenes 3 mm. long, strongly striate, villous-hirsute
on the angles; squamcllac obovate, fully 1 mm. long.
Type locality: "Upper Louisiana" [probably South Dakota]. Distribution: North Dakota to Kansas, northern New Mexico, and Wyoming.
license
cc-by-nc-sa-3.0
bibliographic citation
Per Axel Rydberg. 1914. (CARDUALES); CARDUACEAE; HELENIEAE. North American flora. vol 34(1). New York Botanical Garden, New York, NY
original
visit source
partner site
North American Flora

Hymenopappus tenuifolius

provided by wikipedia EN

Hymenopappus tenuifolius, the Chalk Hill hymenopappus,[1] is a North American species of flowering plant in the daisy family. It grows in the central and southeastern United States, primarily on the Great Plains from Texas and New Mexico north as far as South Dakota.[2]

Hymenopappus tenuifolius is a biennial herb up to 150 cm (5 feet) tall. It produces 20-200 flower heads per stem, each head with 25–50 white disc flowers but no ray flowers.[3][4]

References

 title=
license
cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
partner site
wikipedia EN

Hymenopappus tenuifolius: Brief Summary

provided by wikipedia EN

Hymenopappus tenuifolius, the Chalk Hill hymenopappus, is a North American species of flowering plant in the daisy family. It grows in the central and southeastern United States, primarily on the Great Plains from Texas and New Mexico north as far as South Dakota.

Hymenopappus tenuifolius is a biennial herb up to 150 cm (5 feet) tall. It produces 20-200 flower heads per stem, each head with 25–50 white disc flowers but no ray flowers.

license
cc-by-sa-3.0
copyright
Wikipedia authors and editors
original
visit source
partner site
wikipedia EN