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slender woolly-heads, slender woolly-marbles

Habit Plants greenish to grayish, arachnoid to ± sericeous.
Stems

(1–)2–10, ascending to ± prostrate;

proximal internode lengths mostly 1–2(–3) times leaf lengths.

Receptacles

unlobed.

Heads

± spheric, largest 3–5.5 mm.

Cypselae

narrowly obovoid, somewhat compressed, 0.7–1.2 mm.

Capitular

leaves ± spreading, mostly not appressed to heads, spatulate to obovate, widest in distal 1/3, longest 6–15 mm, lengths mostly 2–5 times widths, 1.5–2.5(–3) times head heights.

Pistillate

paleae individually visible through indument, longest mostly 1.5–2.7 mm.

Staminate

corollas 0.8–1.5 mm, lobes mostly 5.

Psilocarphus tenellus

Phenology Flowering and fruiting late Mar–early Aug.
Habitat Dry or seasonally moist, barren to wooded slopes, flats, often disturbed sites (foot paths, road beds, burns), sometimes near vernal pools toward s
Elevation 0–2100 m (0–6900 ft)
Distribution
from FNA
CA; ID; OR; WA; BC; Mexico (Baja California)
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[BONAP county map]
Discussion

Psilocarphus tenellus is relatively common in the Californian Floristic Province from northwestern Baja California to southwestern Oregon; northward it is scattered to northern Idaho and Vancouver Island, British Columbia. It has been of conservation concern in Canada (J. M. Illingworth and G. W. Douglas 1994b).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 19, p. 459.
Parent taxa Asteraceae > tribe Gnaphalieae > Psilocarphus
Sibling taxa
P. brevissimus, P. chilensis, P. elatior, P. oregonus
Name authority Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 341. (1840)
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