Stellaria calycantha

(Ledebour) Bongard

Mém. Acad. Imp. Sci. St.-Pétersbourg, Sér. 6, Sci. Math. 2: 127. 1833.

Common names: Northern starwort
Basionym: Arenaria calycantha Ledebour Mém. Acad. Imp. Sci. St. Pétersbourg Hist. Acad. 5: 534. 1815
Synonyms: Alsine calycantha (Ledebour) Rydberg Alsine simcoei Howell Stellaria borealis var. simcoei (Howell) Fernald Stellaria calycantha var. simcoei (Howell) Fernald Stellaria simcoei
Treatment appears in FNA Volume 5. Treatment on page 102. Mentioned on page 97, 99, 101.

Plants perennial, forming clumps, from slender rhizomes. Stems erect or trailing, branched, square, weak, to 25(–35) cm, glabrous or pilose, never papillate. Leaves sessile or subsessile; blade ovate to elliptic, rarely oblong, widest proximal to middle, 5–25 mm, thin, base round, margins entire, apex acute, glabrous or rarely ciliate. Inflorescences terminal, 1–5-flowered cymes; bracts foliaceous. Pedicels ascending, not reflexed, 5–25(–50) mm, glabrous. Flowers 3–5 mm; sepals 5, obscurely veined, ovate, 2–2.5 mm (rarely 3.5 in fruit), margins broad, scarious, apex broadly acute, glabrous; petals absent or 1–5, 1–1.5 mm, shorter than sepals, blade apex deeply lobed; stamens 5; styles 3, usually curved, 0.4–0.9 mm. Capsules green, semitransparent, globose to broadly ovoid, 3–5 mm, to 1.5 times as long as broad, longer than sepals, apex obtuse, opening by 3 valves; carpophore absent. Seeds brown, ovate, 0.5–0.9 mm, smooth or shallowly tuberculate. 2n = 26.

Phenology: Flowering summer.
Habitat: Alpine slopes, meadows, shores of lakes and streams
Elevation: 0-3700 m


V5 209-distribution-map.gif

Alta., B.C., N.W.T., Yukon, Alaska, Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Utah, Wash., Wyo., Asia (Russian Far East).


Selected References


Lower Taxa

... more about "Stellaria calycantha"
John K. Morton +
(Ledebour) Bongard +
Arenaria calycantha +
Northern starwort +
Alta. +, B.C. +, N.W.T. +, Yukon +, Alaska +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, N.Mex. +, Oreg. +, Utah +, Wash. +, Wyo. +  and Asia (Russian Far East). +
0-3700 m +
Alpine slopes, meadows, shores of lakes and streams +
Flowering summer. +
Mém. Acad. Imp. Sci. St.-Pétersbourg, Sér. +
Alsine calycantha +, Alsine simcoei +, Stellaria borealis var. simcoei +, Stellaria calycantha var. simcoei +  and Stellaria simcoei +
Stellaria calycantha +
Stellaria +
species +