Castilleja nivea |
Castilleja schizotricha |
|
---|---|---|
snow Indian paintbrush, snow paintbrush, snowy paintbrush |
split hair Indian paintbrush, split-hair paintbrush |
|
Habit | Herbs, perennial, 0.5–1.6 dm; from a woody caudex; with a taproot. | Herbs, perennial, 0.8–1.5 dm; from a woody caudex; with a taproot. |
Stems | few to several, erect to ascending, decumbent at base, unbranched except for small, leafy axillary shoots, hairs weakly spreading to appressed, ± matted, especially distally on stem, fairly short and sparse proximally, longer and denser distally, soft, eglandular, becoming woolly, often obscuring surface. |
few to many, ascending to erect, unbranched, hairs dense, appressed-ascending, matted, long, soft, branched, eglandular, ± white-woolly, obscuring surface. |
Leaves | gray with hairs, surface green to purple, linear to narrowly lanceolate, 1–3.8 cm, not fleshy, margins plane, sometimes ± wavy, involute, 0–3-lobed, apex acute; lobes ascending-spreading, linear to narrowly lanceolate, apex acute to obtuse. |
gray-green with hairs, surface green to purple, linear-lanceolate, 0.5–2 cm, not fleshy, margins plane, ± involute, 0(–3)-lobed, apex acute to acuminate, sometimes rounded; lobes sometimes divergent, spreading-ascending, narrowly linear, apex acute. |
Inflorescences | 2.5–6 × 1–2.5 cm; bracts greenish to pale yellow-green or very pale, dull purplish throughout, lanceolate to oblong, (0–)3(–5)-lobed; lobes usually ascending, linear, medium length to long, arising near mid length, apex acute. |
3–8 × 1–2 cm; bracts purple, lavender, pinkish, or dusty red throughout, sometimes greenish throughout or proximally greenish, distally colored as above, obscured by hairs, lanceolate, 3(–5)-lobed; lobes ascending to erect, linear to oblanceolate, short, arising near or above mid length, apex obtuse. |
Corollas | straight, 18–25 mm; tube 3.5–5.5 mm; subequal to calyx, or beak and sometimes abaxial lip exserted; beak adaxially yellow, 6–8 mm, hairs moderately long, matted on midline, very short-glandular on sides; abaxial lip green, inconspicuous, slightly pouched, 3.5–5.5 mm, 60–90% as long as beak; teeth erect, white or yellow, 0.5–3 mm. |
straight, 15–20 mm; tube 8–9 mm; beak included to slightly exserted, adaxially purple or pink, 3.9–5 mm, densely puberulent with white, woolly hairs; abaxial lip deep purple, inconspicuous, pouched, pouches shallow, 3–5 mm, 80–100% as long as beak; teeth upright-ascending, reduced, appearing white, 1.5–2 mm. |
Calyces | yellow, color mostly obscured by whitish hairs, 15–22 mm; abaxial, adaxial, and lateral clefts (5.5–)7–12 mm, 35–55% of calyx length, often appearing shorter because matted hairs stitch proximal part of clefts shut, all 4 clefts subequal; lobes broadly linear, apex acute. |
colored as bracts, 11–18 mm; abaxial and adaxial clefts 3.5–6 mm, 33–50% of calyx length, all 4 clefts subequal, lateral 4–6 mm, 33–50% of calyx length; lobes linear, apex acute. |
2n | = 24. |
|
Castilleja nivea |
Castilleja schizotricha |
|
Phenology | Flowering Jun–Aug. | Flowering Jul–Aug. |
Habitat | Gravelly slopes and flats, turf and fellfields, mostly alpine. | Meadows, ledges, rocky or gravelly slopes, subalpine to alpine, marble, granite, or serpentine substrates. |
Elevation | 1700–3600 m. (5600–11800 ft.) | 1600–2600 m. (5200–8500 ft.) |
Distribution |
MT; WY
|
CA; OR
|
Discussion | Castilleja nivea is endemic to alpine habitats in the mountains of northwestern Wyoming and adjacent Montana. It forms occasional hybrids with C. pulchella, which often shares its habitat, as on the Beartooth Plateau in northwestern Wyoming. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Castilleja schizotricha is a rare species restricted to high elevations in the mountains in Siskiyou and Trinity counties in northwestern California and in Jackson and western Klamath counties in southwestern Oregon. See the discussion of 6. C. arachnoidea for morphological differences between it and C. schizotricha, as the two are sometimes confused. Though their ranges overlap, they do not appear to hybridize. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 634. | FNA vol. 17, p. 655. |
Parent taxa | Orobanchaceae > Castilleja | Orobanchaceae > Castilleja |
Sibling taxa | ||
Synonyms | C. arachnoidea subsp. schizotricha | |
Name authority | Pennell & Ownbey: Notul. Nat. Acad. Nat. Sci. Philadelphia 227: 2. (1950) | Greenman: Bot. Gaz. 53: 511. (1912) |
Web links |