Orobanche californica subsp. grayana |
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Habit | Plants usually branched proximally, 4–10 cm, portion proximal to inflorescence 1–3(–4) cm, slender. |
Inflorescences | corymbs, sometimes subcorymbose racemes, 3–6 cm; bracts pallid to pinkish tinged, drying brown. |
Pedicels | 5–20 mm. |
Corollas | pallid to pinkish or pale lavender, often with lavender veins, (25–)28–33 mm; tube slender, abruptly widening toward throat; throat 8–10 mm wide at base of lobes; lips 10–12 mm, abaxial lobes lanceolate to lanceolate-subulate, 2–3 mm wide, apex acute, adaxial lobes oblong-ovate, apex narrowly rounded, shallowly retuse, or erosulate. |
Calyces | 11–15 mm, lobes pallid, sometimes purplish, linear-subulate, (7–)9–13(–16) mm. |
2n | = 48. |
Orobanche californica subsp. grayana |
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Phenology | Flowering (Jun–)Aug–Sep. |
Habitat | Moist meadows and stream margins. |
Elevation | (50–)300–2100 m. ((200–)1000–6900 ft.) |
Distribution |
CA; OR; WA |
Discussion | Subspecies grayana is distributed in the Cascade-Sierra Nevada ranges, Coast Ranges (central California and southern Oregon), and mountains of the Columbia Plateau in Oregon, from Klickitat County, Washington, south to Tuolumne County, California. It is rare throughout the range, possibly locally extirpated in portions of the range in Oregon. The hosts are primarily species of Aster and Erigeron and occasionally Grindelia. Other reported non-Asteraceae hosts are unlikely. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 480. |
Parent taxa | |
Sibling taxa | |
Synonyms | O. grayana, Aphyllon californicum subsp. grayanum, Myzorrhiza grayana |
Name authority | (Beck) Heckard: Madroño 22: 54. (1973) |
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