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narrow-leaf owl-clover, thin-leaf owl's-clover, thin-leaf owl-clover

Shasta orthocarpus, Shasta owl's-clover

Habit Annuals 8–35 cm. Annuals 10–25 cm.
Stems

erect or ascending, pilose and puberulent.

erect or ascending, scabrous, sparsely soft-hairy, and puberulent.

Leaves

10–50 mm;

blade: proximal margins entire, distal 3–7-lobed.

30–50 mm;

blade: proximal margins entire, distal 3–5-lobed.

Inflorescences

racemes, 2–6 cm;

bracts 10–20 mm, margins 3–5-lobed in proximal 1/2, proximal not resembling distal leaves, midlobe purple-pink distally, ovate, 4–6 mm wide, apex obtuse, cuspidate, lateral lobes narrowly triangular.

spikes, 5–10 cm;

bracts broadly ovate, 20–30 mm, margins 3-lobed in distal 2/3, proximal not resembling distal leaves, midlobe purple-pink distally, ovate, 7–10 mm wide, apex obtuse, cuspidate, lateral lobes narrowly triangulate.

Pedicels

1–2 mm.

0–1 mm.

Flowers

calyx 8–12 mm;

corolla 14–20 mm, equal to or slightly longer than bracts, abaxial lip inflated, lobes 3, triangular, adaxial lip purple-pink, 5 mm, 1 mm longer than abaxial, puberulent, tip notably hooked, not bearded.

calyx 15–20 mm;

corolla 25–30 mm, longer than bracts, abaxial lip slightly inflated, lobes 3, rounded, adaxial lip purple-pink, 8–10 mm, 2–3 mm longer than abaxial, glabrous, tip notably hooked, not bearded.

Capsules

6–7 mm, apex acute.

5–7 mm, apex obtuse.

Seeds

15–20, dark brown, ovoid to reniform, 1–1.5 mm, shallowly reticulate, not ridged.

10–15, light brown to brown, ovoid, 3 mm, reticulate, not ridged.

2n

= 28.

= 28.

Orthocarpus tenuifolius

Orthocarpus pachystachyus

Phenology Flowering May–Aug. Flowering May–Jun.
Habitat Moist fields, grasslands, rocky slopes. Sagebrush scrub.
Elevation (300–)600–2500 m. ((1000–)2000–8200 ft.) 500–1000 m. (1600–3300 ft.)
Distribution
from FNA
ID; MT; OR; WA; WY; BC
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Orthocarpus tenuifolius is one of the plants first collected by Meriwether Lewis during the Corps of Discovery Expedition.

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

Orthocarpus pachystachyus is known from the eastern Klamath Range and adjacent areas of the western Cascades in Siskiyou County.

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

Source FNA vol. 17, p. 683. FNA vol. 17, p. 683.
Parent taxa Orobanchaceae > Orthocarpus Orobanchaceae > Orthocarpus
Sibling taxa
O. barbatus, O. bracteosus, O. cuspidatus, O. imbricatus, O. luteus, O. pachystachyus, O. purpureoalbus, O. tolmiei
O. barbatus, O. bracteosus, O. cuspidatus, O. imbricatus, O. luteus, O. purpureoalbus, O. tenuifolius, O. tolmiei
Synonyms Bartsia tenuifolia
Name authority (Pursh) Bentham: Scroph. Ind., 12. (1835) A. Gray: in A. Gray et al., Syn. Fl. N. Amer. 2(1): 300. (1878)
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