Eremogone pumicola |
Eremogone fendleri |
|
---|---|---|
Crater Lake sandwort, pumice sandwort |
Fendler's sandwort |
|
Habit | Plants tufted, green, not glaucous, slightly woody at base. | Plants ± cespitose, bluish green, not glaucous, with woody base. |
Stems | erect, 10–20 cm, stipitate-glandular. |
erect, (2–)10–30(–40) cm, stipitate-glandular. |
Leaves | basal leaves ± deciduous; cauline leaves (2–)3–5 of equal size distally; basal blades ascending to ± spreading, narrowly linear, 1.5–3.5 cm × 1–1.5 mm, ± flexuous, ± succulent, apex green, blunt or acute to apiculate, glabrous, not glaucous. |
basal leaves persistent; cauline leaves in (4–)5+ pairs, reduced or not; basal blades ascending or recurved, filiform, 1–10(–11) cm × 0.2–0.4 mm, flexuous, herbaceous, apex apiculate to spinose, glabrous to puberulent, not glaucous. |
Inflorescences | 7–40+-flowered, ± open cymes. |
(1–)3–35-flowered, ± open cymes. |
Pedicels | 3–20 mm, stipitate-glandular. |
3–25 mm, stipitate-glandular. |
Flowers | sepals 1–3-veined, lateral pair obscure, ovate, 3–3.8 mm, 4–4.5 mm in fruit, margins broad, apex obtuse to rounded or barely acute, stipitate-glandular; petals white, narrowly spatulate, 6.6–7.5 mm, 2 times as long as sepals, apex rounded or emarginate; nectaries as lateral and abaxial rounding of base of filaments opposite sepals, 0.3 mm. |
sepals weakly to prominently 1–3-veined, linear-lanceolate, 4–7.5 mm, not enlarging in fruit, margins broad, apex acuminate, moderately to densely stipitate-glandular on herbaceous portion; petals white, oblong-elliptic to spatulate, 4–8 mm, 0.9–1.3 times as long as sepals, apex entire to somewhat erose; nectaries as lateral and abaxial rounding of base of filaments opposite sepals, 0.2 × 0.4 mm. |
Capsules | 4.5–5.5 mm, glabrous. |
5–7 mm, glabrous. |
Seeds | black to brown, oblong to pyriform, 1.8–2.4 mm, smooth to tuberculate. |
black, ovoid to pyriform with hilar notch, 1.5–1.9 mm, tuberculate; tubercles rounded, elongate to rounded-conic. |
2n | = 44. |
|
Eremogone pumicola |
Eremogone fendleri |
|
Phenology | Flowering summer. | Flowering spring–late summer. |
Habitat | Areas with loose pumice | Sagebrush plains, pine forests, and mountain slopes to alpine zones |
Elevation | 1600-2800 m (5200-9200 ft) | 1200-4300 m (3900-14100 ft) |
Distribution |
OR
|
AZ; CO; NM; TX; UT; WY
|
Discussion | Eremogone pumicola is restricted to Crater Lake and vicinity, southwestern Oregon. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
We agree with M. F. Baad (1969) in not formally recognizing varieties within Eremogone fendleri. B. Maguire (1947, 1951) recognized five varieties, defined chiefly on leaf and sepal characteristics. While some specimens can be “matched” to varieties, many appear intermediate between them, forming a continuum of variation. B. Maguire (1947) noted that Eremogone fendleri is “probably to be found in the states of Sonora and Chihuahua, Mexico”; we have not seen any collections from that area. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 5, p. 69. | FNA vol. 5, p. 64. |
Parent taxa | Caryophyllaceae > subfam. Alsinoideae > Eremogone | Caryophyllaceae > subfam. Alsinoideae > Eremogone |
Sibling taxa | ||
Synonyms | Arenaria pumicola | Arenaria fendleri, Arenaria fendleri subsp. brevifolia, Arenaria fendleri var. brevifolia, Arenaria fendleri var. diffusa, Arenaria fendleri var. porteri, Arenaria fendleri var. tweedyi, Arenaria tweedyi |
Name authority | (Coville & Leiberg) Ikonnikov: Novosti Syst. Vyssh. Rast. 10: 140. (1973) | (A. Gray) Ikonnikov: Novosti Syst. Vyssh. Rast. 10: 139. (1973) |
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