Orthocarpus |
Orthocarpus tenuifolius |
|||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
owl's-clover, owl-clover |
narrow-leaf owl-clover, thin-leaf owl's-clover, thin-leaf owl-clover |
|||||||||||||||||||||||||||||||||
Habit | Herbs, annual; hemiparasitic. | Annuals 8–35 cm. | ||||||||||||||||||||||||||||||||
Stems | erect or ascending, not fleshy, glabrous or hairy. |
erect or ascending, pilose and puberulent. |
||||||||||||||||||||||||||||||||
Leaves | cauline, alternate; petiole absent; blade not fleshy, not leathery, margins entire or 3–7-lobed. |
10–50 mm; blade: proximal margins entire, distal 3–7-lobed. |
||||||||||||||||||||||||||||||||
Inflorescences | terminal, spikes or racemes; bracts present. |
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 | absent or present; bracteoles absent. |
1–2 mm. |
||||||||||||||||||||||||||||||||
Flowers | sepals 4, calyx symmetric, tubular, lobes triangular; petals 5, corolla purple-pink, yellow, or white, strongly bilabiate, club-shaped, often gibbous at base of abaxial lip, abaxial lobes 0 or 3, adaxial 2, adaxial lip galeate, rounded at apex, sometimes obscurely so, opening downward; stamens 4, didynamous, filaments glabrous or hairy; staminode 0; ovary 2-locular, placentation axile; stigma linear, not expanded at apex. |
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 | dehiscence loculicidal. |
6–7 mm, apex acute. |
||||||||||||||||||||||||||||||||
Seeds | 5–35, light to dark brown or yellow, ovoid to reniform or oblong, wings absent. |
15–20, dark brown, ovoid to reniform, 1–1.5 mm, shallowly reticulate, not ridged. |
||||||||||||||||||||||||||||||||
x | = 7. |
|||||||||||||||||||||||||||||||||
2n | = 28. |
|||||||||||||||||||||||||||||||||
Orthocarpus |
Orthocarpus tenuifolius |
|||||||||||||||||||||||||||||||||
Phenology | Flowering May–Aug. | |||||||||||||||||||||||||||||||||
Habitat | Moist fields, grasslands, rocky slopes. | |||||||||||||||||||||||||||||||||
Elevation | (300–)600–2500 m. ((1000–)2000–8200 ft.) | |||||||||||||||||||||||||||||||||
Distribution |
w North America |
ID; MT; OR; WA; WY; BC
|
||||||||||||||||||||||||||||||||
Discussion | Species 9 (9 in the flora). Orthocarpus is related to Cordylanthus and can be distinguished by its four-lobed, tubular calyces (D. C. Tank et al. 2009). Some species placed traditionally in Orthocarpus were transferred to Castilleja and Triphysaria by T. I. Chuang and L. R. Heckard (1991). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
||||||||||||||||||||||||||||||||
Key |
|
|||||||||||||||||||||||||||||||||
Source | FNA vol. 17, p. 680. | FNA vol. 17, p. 683. | ||||||||||||||||||||||||||||||||
Parent taxa | ||||||||||||||||||||||||||||||||||
Sibling taxa | ||||||||||||||||||||||||||||||||||
Subordinate taxa | ||||||||||||||||||||||||||||||||||
Synonyms | Bartsia tenuifolia | |||||||||||||||||||||||||||||||||
Name authority | Nuttall: Gen. N. Amer. Pl. 2: 56. (1818) | (Pursh) Bentham: Scroph. Ind., 12. (1835) | ||||||||||||||||||||||||||||||||
Web links |