Search Field Guide
Advanced Search
MT Gov Logo
Montana Field Guide

Montana Field Guides

Capitate Sandwort - Arenaria congesta
Other Names:  Eremogone congesta

Native Species

Global Rank: G5
State Rank: S4S5

Agency Status
MNPS Threat Rank:
C-value: 4

External Links

General Description
Perennial from a branched caudex, forming loose mats. Stems erect, simple, 5–30 cm. Leaves filiform, flexuous or rigid, glabrous, 2–8 cm long, shorter above. Inflorescence many-flowered, congested to sometimes open, glabrous. Flowers: sepals glabrous, ovate to lanceolate, scarious-margined, 3–6 mm long; petals oblong, 5–8 mm long. Capsules glabrous, 3–6 mm long (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Many treatments now put this species in the genus Eremogone. We have varieties congesta, cephaloidea (Rydb.) Maguire, and lithophila (Rydb.) Dorn.

Species Range

Range Comments
AB, SK south to CA, UT, and CO (Lesica 2012. Manual of Montana Vascular Plants. BRIT Press. Fort Worth, TX).

Observations in Montana Natural Heritage Program Database
Number of Observations: 943

(Click on the following maps and charts to see full sized version) Map Help and Descriptions
Relative Density



(Observations spanning multiple months or years are excluded from time charts)


Login Logout
Citation for data on this website:
Capitate Sandwort — Arenaria congesta.  Montana Field Guide.  .  Retrieved on , from