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Crater Lake sandwort, pumice sandwort

Habit Plants tufted, green, not glaucous, slightly woody at base.
Stems

erect, 10–20 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.

Inflorescences

7–40+-flowered, ± open cymes.

Pedicels

3–20 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.

Capsules

4.5–5.5 mm, glabrous.

Seeds

black to brown, oblong to pyriform, 1.8–2.4 mm, smooth to tuberculate.

Eremogone pumicola

Phenology Flowering summer.
Habitat Areas with loose pumice
Elevation 1600-2800 m (5200-9200 ft)
Distribution
from FNA
OR
[WildflowerSearch map]
[BONAP county map]
Discussion

Eremogone pumicola is restricted to Crater Lake and vicinity, southwestern Oregon.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 5, p. 69.
Parent taxa Caryophyllaceae > subfam. Alsinoideae > Eremogone
Sibling taxa
E. aberrans, E. aculeata, E. capillaris, E. congesta, E. eastwoodiae, E. fendleri, E. ferrisiae, E. franklinii, E. hookeri, E. kingii, E. macradenia, E. stenomeres, E. ursina
Synonyms Arenaria pumicola
Name authority (Coville & Leiberg) Ikonnikov: Novosti Syst. Vyssh. Rast. 10: 140. (1973)
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