Flora of North America species comparison

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Psilostrophe gnaphalodes

dudweed
Habit Biennials or perennials (rarely flowering first year), (15–)25–40(–50+) cm.
Stems

arachno-villous (gray to gray-green).
Peduncles

(5–)10–25 mm.
Involucres

5–6 mm.
Disc florets

5–9(–12).
Heads

in ± loose to crowded, corymbiform arrays.
Cypselae

villous;

pappi of 4–5 lance-subulate scales 2–2.5 mm (scales ± villous abaxially and margins ± lacerate).
Rays

(2–)3(–4);

laminae 4–6+ mm, spreading in fruit.
2n

= 32.

Psilostrophe gnaphalodes
Phenology Flowering Mar–Jun(–Dec).
Habitat Creosote-bush scrub, desert flats, dry banks, limestone soils
Elevation 300–1400+ m (1000–4600+ ft)
Distribution
from FNA
TX; Mexico (Coahuila, Durango, Nuevo León, San Luis Potosí, Tamaulipas, Zacatecas)
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 21, p. 455.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Gaillardiinae > Psilostrophe
Sibling taxa
P. bakeri, P. cooperi, P. sparsiflora, P. tagetina, P. villosa
Name authority de Candolle: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 7: 261. (1838)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

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