Eremogone eastwoodiae |
Eremogone macradenia |
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Eastwood's sandwort |
desert sandwort, Mohave sandwort, Mojave or desert sandwort, Mojave sandwort |
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Habit | Plants densely matted, green, not glaucous, with woody base. | Plants tufted, green, not glaucous, with woody base. | ||||||||
Stems | erect, (8–)10–25 cm, glabrous or stipitate-glandular. |
erect, (10–)20–40(–70) cm, glabrous to stipitate-glandular. |
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Leaves | 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. |
basal leaves sparse or absent; cauline leaves usually in 5–12+ pairs, not significantly reduced; basal blades ascending to arcuate-spreading or recurved, needlelike or narrowly linear, (0.7–)2–6(–7) cm × 0.8–2 mm, ± rigid, herbaceous to subsucculent, apex blunt to spinose, glabrous, not glaucous. |
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Inflorescences | (1–)3–17-flowered, ± open cymes. |
3–20(–30)-flowered, ± compact cymes; branches ascending to erect. |
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Pedicels | 3–30 mm, glabrous or stipitate-glandular. |
3–45 mm, glabrous or stipitate-glandular. |
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Flowers | 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. |
sepals 1–3-veined, ovate to lanceolate or elliptic, 4.5–7.2 mm, to 8 mm in fruit, margins narrow to broad, apex acute to acuminate, glabrous to sparsely stipitate-glandular; petals white or yellowish, oblanceolate to spatulate, 6–11 mm, 1–2 times as long as sepals, apex entire or erose; nectaries thickened, molarlike, apically 2-lobed, 1–1.5 mm, or narrowly longitudinally rectangular, truncate, 0.7–0.8 mm, densely minutely pubescent with erect to spreading hairs. |
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Capsules | 4–6 mm, glabrous. |
6–8 mm, glabrous. |
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Seeds | brown, ovoid to suborbicular with hilar notch, 1.2–1.7 mm, papillate, subechinate; tubercles conical. |
greenish or reddish brown to blackish, suborbicular to pyriform or ovoid, 1.3–3.2 mm, tuberculate, sometimes echinate on abaxial ridge; tubercles low, rounded to conic. |
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Eremogone eastwoodiae |
Eremogone macradenia |
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Distribution |
AZ; CO; NM; UT; WY
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AZ; CA; NV; UT
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Discussion | 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.) |
Varieties 2 (2 in the flora). Eremogone macradenia is in the Center for Plant Conservation’s National Collection of Endangered Plants. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 5, p. 63. | FNA vol. 5, p. 68. | ||||||||
Parent taxa | Caryophyllaceae > subfam. Alsinoideae > Eremogone | Caryophyllaceae > subfam. Alsinoideae > Eremogone | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Synonyms | Arenaria eastwoodiae, Arenaria fendleri var. eastwoodiae | Arenaria macradenia | ||||||||
Name authority | (Rydberg) Ikonnikov: Novosti Syst. Vyssh. Rast. 10: 139. (1973) | (S. Watson) Ikonnikov: Novosti Syst. Vyssh. Rast. 10: 140. (1973) | ||||||||
Web links |