Orthocarpus tenuifolius |
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narrow-leaf owl-clover, thin-leaf owl's-clover, thin-leaf owl-clover |
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Habit | Annuals 8–35 cm. |
Stems | erect or ascending, pilose and puberulent. |
Leaves | 10–50 mm; blade: proximal margins entire, distal 3–7-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. |
Pedicels | 1–2 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. |
Capsules | 6–7 mm, apex acute. |
Seeds | 15–20, dark brown, ovoid to reniform, 1–1.5 mm, shallowly reticulate, not ridged. |
2n | = 28. |
Orthocarpus tenuifolius |
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Phenology | Flowering May–Aug. |
Habitat | Moist fields, grasslands, rocky slopes. |
Elevation | (300–)600–2500 m. ((1000–)2000–8200 ft.) |
Distribution |
ID; MT; OR; WA; WY; BC
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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.) |
Source | FNA vol. 17, p. 683. |
Parent taxa | Orobanchaceae > Orthocarpus |
Sibling taxa | |
Synonyms | Bartsia tenuifolia |
Name authority | (Pursh) Bentham: Scroph. Ind., 12. (1835) |
Web links |