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Stellaria umbellata
Turcz.
No occurrences found
Family:
Caryophyllaceae
umbrella starwort
[
Alsine baicalensis
Coville.,
more
Stellaria gonomischa
Boivin,
Stellaria weberi
B.Boivin
]
Images
not available
FNA
Resources
John K. Morton in Flora of North America (vol. 5)
Plants
perennial, forming small clumps or mats, rarely long-straggling, from slender rhizomes.
Stems
erect, branched at base, 4-angled, 5-20 cm (rarely to 40 cm when long and straggling), gla-brous.
Leaves
spatulate-petiolate (proximal) or sessile (distal), bases clasping, connate around stem, ciliate; blade elliptic to lanceolate, 3-9 cm × 1-3 mm, somewhat succulent, base round to cuneate, margins entire, apex acute, glabrous.
Inflorescences
terminal, (1-)2-ca. 21-flowered, subumbellate, often with 1 or 2 axillary flowers below; bracts lanceolate, 1-7 mm, distal ones entire, scarious, proximal ones usually herbaceous.
Pedicels
sharply deflexed at base, often curved distally in fruit, 7-20 mm, glabrous.
Flowers
ca. 2 mm diam.; sepals 5, 3-veined, lanceolate, 2.5-3 mm, margins narrow, scarious, apex obtuse, glabrous; petals absent; stamens 5; styles 3, ascending, curled, ca. 0.25 mm.
Capsules
straw colored, conic, 3-4.5 mm, exceeding sepals, apex obtuse, opening by 6 valves; carpophore absent.
Seeds
brownish, round, 0.5-0.7 mm diam., shallowly rugose.
2
n
= 26. Flowering summer. Moist meadows, rocky summits, gravelly stream- and roadsides; 1000-2800 m; Alta., B.C., N.W.T., Yukon; Alaska, Ariz., Calif., Colo., Idaho, Mont., Nev., N.Mex., Oreg., Utah, Wash., Wyo.; Asia.
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