Minuartia rubella

(Wahlenberg) Hiern

J. Bot. 37: 320. 1899.

Common names: Beautiful or reddish sandwort boreal stitchwort minuartie rougeâtre
Basionym: Alsine rubella Wahlenberg Fl. Lapp., 128, plate 6. 1812
Synonyms: Alsine hirta var. rubella (Wahlenberg) Hartman Arenaria propinqua Richardson Arenaria rubella (Wahlenberg) Smith Arenaria verna var. propinqua (Richardson) Fernald Arenaria verna var. pubescens (Chamisso & Schlechtendal) Fernald Arenaria verna var. rubella (Wahlenberg) S. Watson Tryphane rubella
Treatment appears in FNA Volume 5. Treatment on page 134. Mentioned on page 119, 123.

Plants perennial, cespitose or mat-forming. Taproots filiform to somewhat thickened; rhizomes absent. Stems ascending to erect, green, 2–8(–18) cm, moderately to densely stipitate-glandular (very rarely glabrous), internodes of stems 1–10 times as long as leaves; trailing stems absent. Leaves overlapping, ± tightly, distally (cauline), concentrated proximally (cauline), connate proximally, with often loose, usually scarious sheath 0.2–0.7 mm; blade ± straight or outwardly curved, green, flat to 3-angled, prominently 3-veined abaxially, subulate, 1.5–10 × 0.3–1.3 mm, flexuous, margins not thickened, scarious, smooth, apex green or purple, acute to apiculate, often navicular, shiny, sparsely to densely ciliate, often stipitate-glandular; axillary leaves present among vegetative leaves. Inflorescences 3–7+-flowered, open cymes or rarely flower solitary, terminal; bracts broadly subulate to narrowly lanceolate, herbaceous, margins scarious. Pedicels 0.2–1.5 cm, densely stipitate-glandular. Flowers: hypanthium disc-shaped; sepals prominently 3-veined, ovate to lanceolate (herbaceous portion oblong to narrowly ovate), 2.5–3.2 mm, not enlarging in fruit, apex green to purple, acute to acuminate, not hooded, stipitate-glandular; petals elliptic, 0.8–1.3 times as long as sepals, apex rounded, entire. Capsules on stipe ca. 0.2 mm, ovoid, 4.5–5 mm, longer than sepals. Seeds reddish brown, suborbiculate with radicle prolonged into beak, somewhat compressed, 0.4–0.5 mm, tuberculate; tubercles low, elongate, rounded (to angled on edge) (50×). 2n = 24.

Phenology: Flowering summer.
Habitat: Arctic lowlands to rocky ridges and gravelly, montane, calcareous slopes in arctic and alpine tundra, heath and open woods, ± coastal gravelly limestone barrens in the Gulf of St. Lawrence area
Elevation: 0-3800 m


V5 274-distribution-map.gif

Greenland, Alta., B.C., Man., Nfld. and Labr., N.W.T., Nunavut, Ont., Que., Sask., Yukon, Alaska, Ariz., Calif., Colo., Idaho, Maine, Mont., Nev., N.Mex., Oreg., S.Dak., Utah, Vt., Wash., Wyo., arctic Eurasia.


Distinct among the arctic/alpine Minuartia species with its stiff, three-veined leaves, M. rubella is a circumpolar calciphile. We follow Ö. Nilsson (2001) in not recognizing infraspecific taxa that have been described based at least partly on pubescence. Variety propinqua has been applied to glabrous plants, which occur infrequently and sporadically throughout the range of the species. Where they do occur they are often intermixed with sparsely stipitate-glandular plants. This glabrous variety is rarely encountered in western North America.

Selected References


Lower Taxa

... more about "Minuartia rubella"
Richard K. Rabeler +, Ronald L. Hartman +  and Frederick H. Utech +
(Wahlenberg) Hiern +
Alsine rubella +
Beautiful or reddish sandwort +, boreal stitchwort +  and minuartie rougeâtre +
Greenland +, Alta. +, B.C. +, Man. +, Nfld. and Labr. +, N.W.T. +, Nunavut +, Ont. +, Que. +, Sask. +, Yukon +, Alaska +, Ariz. +, Calif. +, Colo. +, Idaho +, Maine +, Mont. +, Nev. +, N.Mex. +, Oreg. +, S.Dak. +, Utah +, Vt. +, Wash. +, Wyo. +  and arctic Eurasia. +
0-3800 m +
Arctic lowlands to rocky ridges and gravelly, montane, calcareous slopes in arctic and alpine tundra, heath and open woods, ± coastal gravelly limestone barrens in the Gulf of St. Lawrence area +
Flowering summer. +
Illustrated +
Alsine hirta var. rubella +, Arenaria propinqua +, Arenaria rubella +, Arenaria verna var. propinqua +, Arenaria verna var. pubescens +, Arenaria verna var. rubella +  and Tryphane rubella +
Minuartia rubella +
Minuartia +
species +