Eremogone congesta var. cephaloidea

(Rydberg) R. L. Hartman & Rabeler

Sida 21: 239. 2004.

Common names: Sharptip sandwort
Endemic
Basionym: Arenaria cephaloidea Rydberg Bull. Torrey Bot. Club 39: 316. 1912
Synonyms: Arenaria congesta var. cephaloidea (Rydberg) Maguire
Treatment appears in FNA Volume 5. Treatment on page 61. Mentioned on page 62.

Stems 20–40(–50) cm, glabrous. Leaves: basal blades erect to somewhat spreading, filiform, 3–8(–14) cm × 0.4–0.7 mm, herbaceous. Inflorescences capitate, often pyramidal, dense cymes; bracts closely enveloping sepals. Pedicels ± absent, mostly shorter than 0.1 mm, glabrous. Sepals weakly to conspicuously 1–3-veined, 4–5 mm, apex acute to acuminate.


Phenology: Flowering summer.
Habitat: Open, gravelly woods
Elevation: 300-1000 m

Discussion

The pyramidal inflorescence of var. cephaloidea bears a fanciful resemblance to the grass Dactylis glomerata Linnaeus and some members of Carex Linnaeus sect. Ovales Kunth.

Selected References

None.

Lower Taxa

None.
Ronald L. Hartman +, Richard K. Rabeler +  and Frederick H. Utech +
(Rydberg) R. L. Hartman & Rabeler +
Arenaria cephaloidea +
Sharptip sandwort +
Idaho +, Oreg. +  and Wash. +
300-1000 m +
Open, gravelly woods +
Flowering summer. +
Arenaria congesta var. cephaloidea +
Eremogone congesta var. cephaloidea +
Eremogone congesta +
variety +