Castilleja collegiorum |
Castilleja aquariensis |
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colleagues paintbrush, collegial paintbrush |
Aquarius paintbrush, Aquarius Plateau Indian paintbrush, Aquarius Plateau paintbrush |
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Habit | Herbs, perennial, 1.1–2.8 dm; from a woody caudex; with a taproot. | Herbs, perennial, 1.1–3.9 dm; from a woody caudex; with numerous, thickened roots. |
Stems | few to many, erect or ascending, short-decumbent at base, unbranched, hairs dense, spreading to erect, ± short, soft, usually stipitate-glandular, longer ones sometimes eglandular. |
few to several, ascending to erect, unbranched, hairs moderately dense, often retrorse, short, ± stiff, stipitate-glandular distally only in inflorescence. |
Leaves | pale green to dull reddish maroon, linear to linear-lanceolate, 0.8–3.5 cm, not fleshy, margins plane, slightly involute, 0–3(–5)-lobed, apex acuminate; lateral lobes ascending to spreading, linear-lanceolate, usually arising from distal 1/2 of blade, usually narrower than central lobe, apex acuminate to acute. |
appressed-ascending, green to purplish, linear to narrowly lanceolate, distal sometimes broadly lanceolate, (1–)2.5–4(–5.5) cm, not fleshy, margins plane, involute, 0(–5)-lobed, apex rounded to acuminate; lobes ascending, linear to narrowly lanceolate, apex acute. |
Inflorescences | 10–40(–80 with age) × 0.5–2.5 cm; bracts pale cream to pale greenish yellow throughout, often partly to entirely suffused with dull reddish purple to maroon, especially proximally, along veins, and with age, sometimes distal apices pale, dullish red, lanceolate to ovate, usually 3-lobed, central lobe sometimes with short teeth; lobes spreading-ascending, linear-lanceolate, short to medium length, arising at or above mid length, apex acute. |
2–7 × 1.5–2 cm; bracts proximally pale green to pale yellow-green, distally pale to bright yellow or cream, rarely pale orange, elliptic, narrowly ovate, elliptic-oblong, broadly lanceolate, or ovate, (0–)3(–5)-lobed; lobes ascending or spreading, narrowly lanceolate, short, arising near tip on distal bracts, central lobe apex rounded to truncate, lateral ones acute to rounded. |
Corollas | straight, 16.5–25 mm; tube 12–18 mm; beak scarcely exserted, adaxially pale green to yellowish, 3–7 mm; abaxial lip green, not inflated, grooved, 2.5 mm, 33–50% as long as beak; teeth slightly incurved, white, 1 mm. |
straight, 17–25 mm; tube 9–13 mm; beak exserted, adaxially green, 6–8(–12) mm, margins red or reddish brown, short-hairy; abaxial lip green, reduced, sometimes exserted, 1.5–2 mm, 10–15% as long as beak, glabrous; teeth erect, green, 0.5–1.5 mm. |
Calyces | pale cream to pale greenish yellow, sometimes reddish violet to maroon on distal segments and/or with a thin vertical strip of pale reddish violet to maroon along veins, 11–20 mm; abaxial and adaxial clefts 7–12 mm, 60% of calyx length, deeper than laterals, lateral 0.5–1 mm, 5–10% of calyx length; lobes triangular, apex acute to obtuse. |
proximally green to yellowish, distal 1/2 yellow, (16–)18–25 mm; abaxial and adaxial clefts (8–)9.5–12.5 mm, 50% of calyx length, deeper than laterals, lateral 0.5–5(–6) mm, 5–20% of calyx length; lobes lanceolate to ovate, apex acute to obtuse. |
Castilleja collegiorum |
Castilleja aquariensis |
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Phenology | Flowering late Jun–Jul. | Flowering Jun–Aug. |
Habitat | Hummocks and margins of moist to wet meadows. | Meadows with sagebrush, openings in spruce-fir forests. |
Elevation | 1700–1800 m. (5600–5900 ft.) | 2900–3400 m. (9500–11200 ft.) |
Distribution |
OR
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UT
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Discussion | Castilleja collegiorum is endemic to a large meadow system in the southern Cascade Range of Klamath County. It is similar to C. cryptantha in Washington and C. lemmonii in California but differs from both in structural details of the inflorescence, calyx, bracts, and leaves. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Castilleja aquariensis is endemic to the Aquarius Plateau in the mountains of south-central Utah. Its meadow habitats were severely degraded by livestock grazing, and at one time the species was a candidate for listing under the Endangered Species Act of the United States. It is still a species of management concern. Castilleja aquariensis is in the Center for Plant Conservation’s National Collection of Endangered Plants. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 598. | FNA vol. 17, p. 589. |
Parent taxa | Orobanchaceae > Castilleja | Orobanchaceae > Castilleja |
Sibling taxa | ||
Name authority | J. M. Egger & S. Malaby: Phytoneuron 2015-33: 1, figs. 1–3, 9[left]. (2015) | N. H. Holmgren: Bull. Torrey Bot. Club 100: 87, fig. 3. (1973) |
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