Burke: Orthocarpus tenuifolius

	Orthocarpus tenuifolius
	narrow-leaved owl-clover, thin-leaved owl-clover
Habit	Slender annual, the stem 1-3 dm. tall, simple or branched above; herbage puberulent.
Leaves	Leaves alternate, all cauline, 1-5 cm. long, the lower narrowly linear and entire, the others with 1 or 2 pairs of slender lobes; bracts abruptly differentiated from the leaves, much broader and blunter, entire, or the lower with a pair of slender lateral lobes; the upper bracts have conspicuous, purplish-pink tips.
Flowers	Inflorescence a dense, showy spike; calyx 2-cleft, with bifid segments; corolla yellow, purplish at the tip, 14-20 mm. long, bilabiate, the lower lip inflated, with 3 short teeth; upper lip hooded, enclosing the 4 stamens, about 1 mm. longer than the lower lip, hooked at the tip.
Fruits	Capsule.

	Orthocarpus tenuifolius
Flowering time	May-August
Habitat	Open, moist or rather dry places, from the valleys and plains to moderate elevtions in the mountains.
Distribution	Occurring east of the Cascades crest in Washington; southern British Columbia to central Oregon, east to western Montana. [WildflowerSearch map] [BONAP county map]
Origin	Native
Conservation status	Not of concern
Sibling taxa	O. barbatus, O. bracteosus, O. imbricatus, O. luteus
Web links	Local floras: BC, OR, WA Local Web sites: Flora NW, PNW Herbaria, Turner Photog. WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Orthocarpus tenuifolius

narrow-leaved owl-clover, thin-leaved owl-clover

Habit

Slender annual, the stem 1-3 dm. tall, simple or branched above; herbage puberulent.

Leaves

Leaves alternate, all cauline, 1-5 cm. long, the lower narrowly linear and entire, the others with 1 or 2 pairs of slender lobes;

bracts abruptly differentiated from the leaves, much broader and blunter, entire, or the lower with a pair of slender lateral lobes; the upper bracts have conspicuous, purplish-pink tips.

Flowers

Inflorescence a dense, showy spike;

calyx 2-cleft, with bifid segments;

corolla yellow, purplish at the tip, 14-20 mm. long, bilabiate, the lower lip inflated, with 3 short teeth; upper lip hooded, enclosing the 4 stamens, about 1 mm. longer than the lower lip, hooked at the tip.

Fruits

Capsule.