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star chickweed

long-leaf starwort, long-leaf stitchwort, stellaire à longues feuilles

Habit Plants perennial, with stems loosely tufted, rhizomatous. Plants perennial, forming loose clumps, from elongate rhizomes.
Stems

erect, branched, 4-sided, 10–40 cm, with alternating lines of spreading, soft, flexuous, mainly eglandular hairs.

erect or straggling, branched, square, 10–35 cm, glabrous but angles minutely papillate-scabrid.

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.

sessile;

blade green to yellowish green, never glaucous, linear to very narrowly elliptic, widest at or beyond middle, 0.8–4 cm × 1–3 mm, not coriaceous, base attenuate, apex acuminate to acute, glabrous to sparingly ciliate at base, margins minutely papillate-scabrid;

proximal leaves shorter and wider.

Inflorescences

terminal, 3–70-flowered cymes;

bracts elliptic to lanceolate, 7–65 mm, herbaceous.

terminal, widely divaricate, 2–many-flowered cymes;

bracts lanceolate, 1–5 mm, scarious, apex acuminate.

Pedicels

erect in flower, often deflexed at base in fruit, 5–40 mm, softly pubescent.

straight or somewhat arcuate, commonly 3–30 mm, glabrous or scabrous.

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.

5–9 mm diam.;

sepals 5, obscurely 3-veined, ovate-elliptic, 2–4 mm, margins scarious, apex acute, glabrous;

petals 5, 2–3.5 mm, ± equaling sepals;

stamens 5–10;

styles 3, ascending, ca. 1 mm.

Capsules

green to straw colored, broadly ovoid, 3.5–5.5 mm, ca. equaling sepals, apex obtuse, opening by 6 valves;

carpophore absent.

blackish purple or straw colored, ovoid-conic, 3–6 mm, much longer than sepals, opening by 6 valves;

carpophore absent.

Seeds

brown, obliquely reniform, 1.5–2 mm diam., coarsely sulcate-papillate.

brown, broadly reniform, 0.7–0.8 mm diam., slightly rugose.

2n

= 30.

= 26.

Stellaria pubera

Stellaria longifolia

Phenology Flowering spring. Flowering late spring–summer.
Habitat Rich deciduous woods, alluvial bottomlands Wet meadows and woodlands, marshes, muskegs, grassy roadsides, usually in circumneutral to calcareous sites
Elevation 100-1000 m (300-3300 ft) 0-2800 m (0-9200 ft)
Distribution
from FNA
AL; DC; FL; GA; IN; KY; MD; NC; NE; OH; PA; SC; TN; VA; WV
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from FNA
AK; AZ; CA; CO; CT; DC; DE; IA; ID; IL; IN; KY; MA; MD; ME; MI; MN; MO; MT; ND; NE; NH; NJ; NV; NY; OH; PA; RI; SC; SD; TN; VA; VT; WA; WI; WV; WY; AB; BC; MB; NB; NL; NS; NT; ON; QC; SK; YT; SPM; Europe
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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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Stellaria longifolia often is confused with forms of S. longipes but differs in having leaves that are widest at or above the middle and in having the angles of the stem and/or the leaf margins minutely papillate-scabrid. The capsules can be either straw colored or black. Plants with black capsules have been named var. atrata.

Hybrids with Stellaria borealis subsp. borealis often occur; see note under that species.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 5, p. 112. FNA vol. 5, p. 107.
Parent taxa Caryophyllaceae > subfam. Alsinoideae > Stellaria Caryophyllaceae > subfam. Alsinoideae > Stellaria
Sibling taxa
S. alaskana, S. alsine, S. americana, S. borealis, S. calycantha, S. corei, S. crassifolia, S. crispa, S. cuspidata, S. dicranoides, S. fontinalis, S. graminea, S. holostea, S. humifusa, S. irrigua, S. littoralis, S. longifolia, S. longipes, S. media, S. neglecta, S. nitens, S. obtusa, S. pallida, S. palustris, S. parva, S. porsildii, S. ruscifolia, S. umbellata
S. alaskana, S. alsine, S. americana, S. borealis, S. calycantha, S. corei, S. crassifolia, S. crispa, S. cuspidata, S. dicranoides, S. fontinalis, S. graminea, S. holostea, S. humifusa, S. irrigua, S. littoralis, S. longipes, S. media, S. neglecta, S. nitens, S. obtusa, S. pallida, S. palustris, S. parva, S. porsildii, S. pubera, S. ruscifolia, S. umbellata
Synonyms Alsine pubera, Alsine pubera var. tennesseensis Alsine longifolia, S. atrata, S. atrata var. eciliata, S. diffusa, S. longifolia var. atrata, S. longifolia var. eciliata
Name authority Michaux: Fl. Bor.-Amer. 1: 273. (1803) Muhlenberg ex Willdenow: Enum. Pl., 479. (1809)
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