Chionophila tweedyi |
Chionophila jamesii |
|
---|---|---|
Tweedy's snowlover |
Rocky Mountain snowlover |
|
Stems | 1–4, (5–)10–18(–25) cm, glabrous or sparsely glandular-pubescent. |
1 or 2(or 3), (3–)5–12(–15) cm, puberulent or retrorsely hairy, sometimes glabrate. |
Leaves | basal and proximal cauline, blade oblanceolate, (8–)25–90 × (1–)3–13 mm, surfaces glabrous; cauline 1–4 pairs, blade narrowly lanceolate to linear, 2–22 × 1–3 mm. |
basal and proximal cauline, blade oblanceolate to narrowly oblanceolate or spatulate, 12–78 × 2–18 mm, surfaces glabrous or glabrate; cauline 1–3 pairs, blade narrowly lanceolate to linear, 8–28 × 1–3 mm. |
Racemes | 1–7 cm, verticillasters 4–10, interrupted, glandular-pubescent; bracts lanceolate, proximal ones 3–9 × 1–3 mm. |
1–5 cm, verticillasters 2–7, continuous, sparsely puberulent and, usually, sparsely glandular-puberulent; bracts ovate to lanceolate, proximal ones 8–19 × 4–7 mm. |
Pedicels | 0–7 mm, glandular-pubescent. |
0–4 mm, glabrous or sparsely glandular-pubescent. |
Flowers | calyx tube 1–2 mm, glandular-pubescent, lobes triangular to narrowly ovate, 2.5–3 × 1.4–2 mm; corolla pale lavender, 9–14 mm, glabrous externally, palate and proximal parts of abaxial limb glandular-pubescent, hairs to 0.1 mm, tube 1–2 mm, pollen sacs 0.3–0.4 mm, explanate; staminode 4–5 mm; style 6–7 mm. |
calyx tube 8–9 mm, sparsely glandular-puberulent, lobes triangular, 1.5–2.5 × 2–2.5 mm; corolla greenish white or creamy white, 10–15 mm, glabrous externally, palate and proximal parts of abaxial limb densely white-lanate, hairs to 1.5 mm, tube 3–4 mm, pollen sacs 0.5–0.6 mm, explanate; staminode 5–7 mm; style 10–12 mm. |
Capsules | 6.5–9 × 4–5 mm. |
8–9.5 × 4.5–6 mm. |
Seeds | brown, elliptic-disciform, 2.4–3 mm. |
tan to brown, ellipsoid to fusiform with tail on each end, 3–4.2 mm. |
2n | = 16. |
|
Chionophila tweedyi |
Chionophila jamesii |
|
Phenology | Flowering Jun–Aug. | Flowering Jun–Aug. |
Habitat | Talus slopes, meadows, usually near timber lines. | Gravelly slopes, alpine meadows, subalpine bogs. |
Elevation | 2100–3200 m. (6900–10500 ft.) | 3300–4100 m. (10800–13500 ft.) |
Distribution |
ID; MT
|
CO; NM; WY
|
Discussion | Chionophila tweedyi is known from central Idaho and southwestern Montana. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Chionophila jamesii occurs in the central Rocky Mountains from the Medicine Bow Mountains of south-central Wyoming to the Culebra Range in Taos County in north-central New Mexico. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 62. | FNA vol. 17, p. 61. |
Parent taxa | Plantaginaceae > Chionophila | Plantaginaceae > Chionophila |
Sibling taxa | ||
Synonyms | Penstemon tweedyi, Pentstemonopsis tweedyi | |
Name authority | (Canby & Rose) L. F. Henderson: Bull. Torrey Bot. Club 27: 352. (1900) | Bentham: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 10: 331. (1846) |
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