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Crater Lake sandwort, pumice sandwort

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

erect, 10–20 cm, stipitate-glandular.


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.


7–40+-flowered, ± open cymes.


3–20 mm, stipitate-glandular.


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.


4.5–5.5 mm, glabrous.


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)
from FNA
[WildflowerSearch map]
[BONAP county map]

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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