Minuartia uniflora |
Minuartia californica |
|
---|---|---|
one-flower stitchwort |
California sandwort, sandwort |
|
Habit | Plants annual. | Plants annual. |
Taproots | filiform. |
filiform. |
Stems | erect to ascending, green, 7–20 cm, glabrous, internodes of stems 1–7 times as long as leaves. |
widely spreading to erect, green, (1–)2–12 cm, glabrous, internodes of flowering stems 5–10 times as long as leaves. |
Leaves | not overlapping, connate proximally, with tight, herbaceous or scarious sheath 0.1–0.3 mm; blade straight to outwardly curved, widely spreading, green, flat, 1-veined abaxially, especially proximal, narrowly lanceolate to oblong, commonly linear, 2–20 × 0.3–1.5 mm, flexuous, margins not thickened, scarious, smooth, apex green to purple, rounded to acute, dull, glabrous; axillary leaves poorly developed. |
not overlapping, all evenly spaced, connate proximally, with loose, herbaceous or scarious sheath 0.5–0.7 mm; blade widely spreading, green, concave proximally, flat distally, weakly 1-veined abaxially, linear to awl-shaped or narrowly oblong, 2–5 × 0.2–1.5 mm, flexuous, margins not thickened, scarious proximally, smooth, apex green or purple, acute to often rounded, flat, dull to shiny, glabrous; axillary leaves absent. |
Inflorescences | 7–25+-flowered, open cymes; bracts subulate to ovate, herbaceous, margins scarious. |
5–7(–9)-flowered, open cymes, or rarely flowers solitary; bracts subulate, herbaceous, often scarious-margined proximally. |
Pedicels | 0.5–5 cm, glabrous. |
0.2–1.5 cm, glabrous. |
Flowers | hypanthium disc-shaped; sepals obscurely veined, ovate to elliptic or lanceolate (herbaceous portion elliptic to lanceolate), 2–3.5 mm, not enlarging in fruit, apex green, obtuse to rounded, not hooded, glabrous; petals oblanceolate to spatulate, 1.5–2.5 times as long as sepals, apex rounded, entire to shallowly notched. |
hypanthium disc-shaped; sepals 1–3-veined, midvein sometimes more prominent than lateral veins, broadly lanceolate to elliptic (herbaceous portion narrowly elliptic to oblong), 2.5–2.8 mm, not enlarging in fruit, apex green to purple, rounded to acute, slightly hooded, glabrous; petals elliptic to oblanceolate, 1.5–1.8 times as long as sepals, apex obtuse to rounded, entire. |
Capsules | on stipe shorter than 0.1 mm, pyramidal-ovoid, 3.5–4 mm, longer than sepals. |
on stipe ca 0.1 mm, ± ovoid, 3–3.5 mm, longer than sepals. |
Seeds | yellowish brown, suborbiculate with radicle obscure, slightly compressed, 0.4–0.6 mm, tuberculate; tubercles low, rounded. |
reddish brown, suborbiculate with radicle prolonged into beak, slightly compressed, 0.4–0.5 mm, minutely papillate. |
2n | = 14. |
= 26. |
Minuartia uniflora |
Minuartia californica |
|
Phenology | Flowering spring. | Flowering spring–summer. |
Habitat | Sandy or granitic outcrops | Gravelly or sandy slopes, meadows, chaparral, vernal ponds, roadsides |
Elevation | 70-200 m (200-700 ft) | 10-700(-1500) m (0-2300(-4900) ft) |
Distribution |
AL; GA; NC; SC
|
CA; OR
|
Discussion | Minuartia alabamensis was originally described to accommodate much-reduced plants from Alabama (J. F. McCormick et al. 1971). Subsequent studies have shown them to be conspecific with M. uniflora (R. Wyatt 1984). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 5, p. 136. | FNA vol. 5, p. 121. |
Parent taxa | Caryophyllaceae > subfam. Alsinoideae > Minuartia | Caryophyllaceae > subfam. Alsinoideae > Minuartia |
Sibling taxa | ||
Synonyms | Stellaria uniflora, Alsine uniflora, Alsinopsis uniflora, Arenaria alabamensis, Arenaria brevifolia, M. alabamensis, Sabulina uniflora | Arenaria brevifolia var. californica, Alsinopsis californica, Arenaria californica, Arenaria pusilla var. diffusa, M. pusilla var. diffusa |
Name authority | (Walter) Mattfeld: Bot. Jahrb. Syst. 57(Beibl. 126): 28. (1921) | (A. Gray) Mattfeld: Bot. Jahrb. Syst. 57(Beibl. 126): 28. (1921) |
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