Stellaria pubera

Michaux

Fl. Bor.-Amer. 1: 273. 1803.

Common names: Star chickweed
WeedyIllustratedEndemic
Synonyms: Alsine pubera (Michaux) Britton Alsine pubera var. tennesseensis C. Mohr
Treatment appears in FNA Volume 5. Treatment on page 112. Mentioned on page 97, 99, 103.

Plants perennial, with stems loosely tufted, rhizomatous. Stems erect, branched, 4-sided, 10–40 cm, with alternating lines of spreading, soft, flexuous, mainly eglandular hairs. Leaves usually sessile (distal), often short-petiolate (proximal); blade elliptic, obovate, or lanceolate, widest at or beyond middle, 1–10 cm × 5–35 mm, base cuneate, margins entire, apex acute, glabrous to sparsely pubescent adaxially, ciliate on margins and abaxial midrib. Inflorescences terminal, 3–70-flowered cymes; bracts elliptic to lanceolate, 7–65 mm, herbaceous. Pedicels erect in flower, often deflexed at base in fruit, 5–40 mm, softly pubescent. Flowers (8–) 10–12 mm diam.; sepals 5, with midrib, ovate, 3.5–6 mm, margins narrow, scarious, apex obtuse to acute, softly and often sparsely pubescent; petals 5, 4–8 mm, longer than sepals; stamens 10; styles 3, ascending, 2.5 mm. Capsules green to straw colored, broadly ovoid, 3.5–5.5 mm, ca. equaling sepals, apex obtuse, opening by 6 valves; carpophore absent. Seeds brown, obliquely reniform, 1.5–2 mm diam., coarsely sulcate-papillate. 2n = 30.


Phenology: Flowering spring.
Habitat: Rich deciduous woods, alluvial bottomlands
Elevation: 100-1000 m

Distribution

V5 235-distribution-map.gif

Ala., D.C., Fla., Ga., Ind., Ky., Md., Nebr., N.C., Ohio, Pa., S.C., Tenn., Va., W.Va.

Discussion

Stellaria pubera has been introduced in Nebraska and possibly in Illinois. It is very similar to S. corei but is distinguished by its shorter, more ovate sepals.

Selected References

None.

Lower Taxa

None.
... more about "Stellaria pubera"
perigynous +  and hypogynous +
pubescent +, glabrous +  and sparsely pubescent adaxially +
obtuse;obtuse;acute +
John K. Morton +
Michaux +
cuneate +
Laciniate (?) +, Emarginate (?) +, Jagged (?) +, 2-fid (?) +  and Entire (?) +
1 cm10 mm <br />0.01 m <br /> (10 cm100 mm <br />0.1 m <br />) +
lanceolate +, obovate +  and elliptic +
not +  and succulent +
0.5 cm5 mm <br />0.005 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
elliptic +  and lanceolate +
reduced +
0.7 cm7 mm <br />0.007 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
green;straw colored +
ascending;recurved +
10 +, 8 +  and 4 +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
Star chickweed +
3-70-flowered +
dish--shaped +
expanded +
Ala. +, D.C. +, Fla. +, Ga. +, Ind. +, Ky. +, Md. +, Nebr. +, N.C. +, Ohio +, Pa. +, S.C. +, Tenn. +, Va. +  and W.Va. +
100-1000 m +
straight +  and curved +
central +  and peripheral +
1 cm10 mm <br />0.01 m <br /> (?) +  and 1.2 cm12 mm <br />0.012 m <br /> (?) +
inconspicuous +
stalked +  and simple +
Rich deciduous woods, alluvial bottomlands +
flexuous +
short-petiolate +  and sessile +
connate +
alternating +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
deflexed;erect +
0.5 cm5 mm <br />0.005 m <br /> (4 cm40 mm <br />0.04 m <br />) +
perigynous +  and hypogynous +
fugacious +
not clawed +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Flowering spring. +
Fl. Bor.-Amer. +
1.5mm;2mm +
sulcate-papillate +
reniform +
red +, purple-tinged +  and green +
persistent +
distinct +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Weedy +, Illustrated +  and Endemic +
4-angled;terete +
10 cm100 mm <br />0.1 m <br /> (40 cm400 mm <br />0.4 m <br />) +
subterminal +  and terminal +
[30 +  and 3 +
papillate +
distinct +
capitate +  and clavate +
2.5 cm25 mm <br />0.025 m <br /> (?) +
Alsine pubera +  and Alsine pubera var. tennesseensis +
rooting +  and rhizomatous +
Stellaria pubera +
Stellaria +
species +
divided +
10 +  and 8 +
pubescence of simple hairs or stalked glands +  and glabrous +
15 +, 13 +, 12 +, 11 +  and 10 +