Eremogone pumicola |
Eremogone eastwoodiae |
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Crater Lake sandwort, pumice sandwort |
Eastwood's sandwort |
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Habit | Plants tufted, green, not glaucous, slightly woody at base. | Plants densely matted, green, not glaucous, with woody base. | ||||
Stems | erect, 10–20 cm, stipitate-glandular. |
erect, (8–)10–25 cm, glabrous or stipitate-glandular. |
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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 usually in 2–4 pairs, reduced distally; basal blades spreading to recurved, needlelike, 1–3(–3.5) cm × 0.5–0.7 mm, flexuous to rigid, herbaceous, apex spinose, glabrous to puberulent, not glaucous. |
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Inflorescences | 7–40+-flowered, ± open cymes. |
(1–)3–17-flowered, ± open cymes. |
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Pedicels | 3–20 mm, stipitate-glandular. |
3–30 mm, glabrous or stipitate-glandular. |
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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 green or purplish, 1–3-veined, lanceolate to ovate-lanceolate, (3.5–)4–6.5 mm, not enlarging in fruit, margins broad, apex narrowly acute to acuminate, glabrous or stipitate-glandular; petals yellowish white or sometimes brownish to reddish pink, broadly oblong-elliptic to oblanceolate, 4–6.5 mm, 0.9–1.1 times as long as sepals, apex rounded; nectaries narrowly longitudinally rectangular, apically cleft or emarginate, adjacent to filaments opposite sepals, 1–2 mm. |
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Capsules | 4.5–5.5 mm, glabrous. |
4–6 mm, glabrous. |
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Seeds | black to brown, oblong to pyriform, 1.8–2.4 mm, smooth to tuberculate. |
brown, ovoid to suborbicular with hilar notch, 1.2–1.7 mm, papillate, subechinate; tubercles conical. |
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Eremogone pumicola |
Eremogone eastwoodiae |
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Phenology | Flowering summer. | |||||
Habitat | Areas with loose pumice | |||||
Elevation | 1600-2800 m (5200-9200 ft) | |||||
Distribution |
OR
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AZ; CO; NM; UT; WY
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Discussion | Eremogone pumicola is restricted to Crater Lake and vicinity, southwestern Oregon. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 2 (2 in the flora). The Hopi Indians may use Eremogone eastwoodiae as an emetic (B. Maguire 1960). The nectaries in Eremogone eastwoodiae are different from those of most other species of the genus in North America since they are a separate bilobed structure adjacent to, but not a direct enlargement of, the filament bases opposite the sepals. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 5, p. 69. | FNA vol. 5, p. 63. | ||||
Parent taxa | Caryophyllaceae > subfam. Alsinoideae > Eremogone | Caryophyllaceae > subfam. Alsinoideae > Eremogone | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Arenaria pumicola | Arenaria eastwoodiae, Arenaria fendleri var. eastwoodiae | ||||
Name authority | (Coville & Leiberg) Ikonnikov: Novosti Syst. Vyssh. Rast. 10: 140. (1973) | (Rydberg) Ikonnikov: Novosti Syst. Vyssh. Rast. 10: 139. (1973) | ||||
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