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183. Pseudognaphalium Kirpicznikov, Trudy Bot. Inst. Akad. Nauk S.S.S.R., Ser. 1, Fl. Sist. Vyssh. Rast. 9: 33. 1950.
拟鼠麴草属 ni shu qu cao shu
Authors: Yousheng Chen & Randall J. Bayer
Gnaphalium subg. Laphangium Hilliard & B. L. Burtt; Laphangium (Hilliard & B. L. Burtt) Tzvelev.
Herbs, perennial, biennial, or annual. Leaves alternate, flat with entire margins, tomentose on both surfaces. Capitula many in corymbs. Phyllaries papery, whitish, rosy, tawny, or brownish, opaque or hyaline, dull or shiny; stereome divided. Receptacle flat, epaleate. Outer florets yellow, filiform. Central florets bisexual, yellow. Anthers with flat appendages. Style branches truncate, with hairs apically. Achenes oblong, with short clavate twin hairs. Pappus bristles capillary, barbellate, and free.
About 90 species: worldwide, mostly South America to North America, mostly in temperate regions; six species (two endemic) in China.
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| 1 |
Phyllaries light white or bright brown |
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(2) |
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Phyllaries golden yellow or citrine yellow |
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(4) |
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| 2 (1) |
Robust herbs, up to 1 m tall; leaves distinctly 3-veined. |
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1 P. adnatum |
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Dwarf herbs, 10-40 cm tall; leaves 1-veined |
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(3) |
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| 3 (2) |
Annual herbs; leaves spatulate or spatulate-oblong, apex obtusely rounded, base narrower. |
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2 P. luteoalbum |
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Perennial herbs; leaves lanceolate or ovate-lanceolate, rarely linear, apex shortly acute, base broader. |
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3 P. flavescens |
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| 4 (1) |
Stems shortly glandular; leaf base decurrent to form wings; capitula ca. 5 mm in diam. or larger. |
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4 P. chrysocephalum |
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Stems white lanate; leaf base decurrent, sometimes slightly amplexicaul; capitula 2-4 mm in diam |
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(5) |
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| 5 (4) |
Dwarf herbs, 10-40 cm tall, usually branched from base; leaves spatulate or spatulate-oblanceolate, not amplexicaul or auriculate, whitish tomentose on both surfaces; pappus connate at base. |
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5 P. affine |
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Robust herbs, up to 80 cm tall, only branched in upper part; leaves linear, subamplexicaul-auriculate, green glandular adaxially, white tomentose abaxially; pappus distinct. |
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6 P. hypoleucum |
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Lower Taxa
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