The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Crater Lake sandwort, pumice sandwort

Eastwood's sandwort

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.

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.

Inflorescences

7–40+-flowered, ± open cymes.

(1–)3–17-flowered, ± open cymes.

Pedicels

3–20 mm, stipitate-glandular.

3–30 mm, glabrous or 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 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.

Capsules

4.5–5.5 mm, glabrous.

4–6 mm, glabrous.

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.

Eremogone pumicola

Eremogone eastwoodiae

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

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.)

Key
1. Stems and pedicels glabrous
var. eastwoodiae
1. Stems and pedicels stipitate-glandular
var. adenophora
Source FNA vol. 5, p. 69. FNA vol. 5, p. 63.
Parent taxa Caryophyllaceae > subfam. Alsinoideae > Eremogone 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
E. aberrans, E. aculeata, E. capillaris, E. congesta, E. fendleri, E. ferrisiae, E. franklinii, E. hookeri, E. kingii, E. macradenia, E. pumicola, E. stenomeres, E. ursina
Subordinate taxa
E. eastwoodiae var. adenophora, E. eastwoodiae var. eastwoodiae
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)
Web links