Burke: Psilocarphus brevissimus vs. Psilocarphus

	Psilocarphus brevissimus	Psilocarphus
	dwarf woolly-marbles	woolly-heads, woolly-marbles
Habit	Small, woolly, monoecious annuals, usually prostrate and branching, the stems up to 10 cm. long.
Leaves	Leaves opposite, mostly lance-oblong to lance-linear, 5-25 mm. long and 2-5 mm. wide, usually well-surpassing the heads.
Flowers	: Pistillate flowers 8-80 in each head, the corolla filiform-tubular, each enclosed by a saccate, woolly bract about 3 mm. long attached to the receptacle; receptacle lobed, each lobe bearing a cluster of as few staminate flowers; involucre none, but the heads subtended by several foliage leaves; pappus none; style off-set.
Fruits	Achenes obliquely lanceolate, flattened, 1.0-1.9 mm. long.

	Psilocarphus brevissimus	Psilocarphus
Flowering time	May-July
Habitat	Dried beds of vernal pools.
Distribution	Occurring east of the Cascades crest in Washington; British Columbia to California, east to the northern Great Plains and Rocky Mountains. [WildflowerSearch map] [BONAP county map]	[BONAP county map]
Origin	Native	Native
Conservation status	Not of concern	Not of concern
Sibling taxa	P. elatior, P. oregonus, P. tenellus
Subordinate taxa	P. brevissimus var. brevissimus	P. brevissimus, P. elatior, P. oregonus, P. tenellus
Web links	Local floras: BC, CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Psilocarphus brevissimus

Psilocarphus

dwarf woolly-marbles

woolly-heads, woolly-marbles

Habit

Small, woolly, monoecious annuals, usually prostrate and branching, the stems up to 10 cm. long.

Leaves

Leaves opposite, mostly lance-oblong to lance-linear, 5-25 mm. long and 2-5 mm. wide, usually well-surpassing the heads.

Flowers

: Pistillate flowers 8-80 in each head, the corolla filiform-tubular, each enclosed by a saccate, woolly bract about 3 mm. long attached to the receptacle;

receptacle lobed, each lobe bearing a cluster of as few staminate flowers;

involucre none, but the heads subtended by several foliage leaves;

pappus none;

style off-set.

Fruits

Achenes obliquely lanceolate, flattened, 1.0-1.9 mm. long.