Micranthes texana |
Micranthes howellii |
|
---|---|---|
Texas saxifrage |
Howell's saxifrage |
|
Habit | Plants solitary or in clumps, with bulbils on caudices. | Plants solitary or in groups, with bulbils on caudices. |
Leaves | basal; petiole flattened, 1–3 cm; blade broadly ovate to oblong, 1.5–3 cm, ± leathery, base ± abruptly attenuate, margins subentire to slightly crenate, eciliate, surfaces glabrate to sparsely hairy. |
basal; petiole flattened, 1–4 cm; blade oblong to narrowly ovate, 1–2(–3) cm, ± fleshy, base attenuate, margins sharply serrate, eciliate, surfaces sparsely tangled, reddish brown-hairy abaxially, glabrous adaxially. |
Inflorescences | 20+-flowered, branched, ± capitate thyrses, 10–15 cm, hairy, sometimes purple-tipped stipitate-glandular. |
5–10(–20)-flowered, very open, lax, ± flat-topped cymes or thyrses, 5–10(–20) cm, glabrate to sparsely purple-tipped stipitate-glandular; (bracts glabrous). |
Flowers | sepals erect, ovate; petals white, not spotted, ± obovate, clawed, 2–3.5 mm, ± equaling sepals; filaments linear, flattened; pistils 3+, connate to 1/2 their lengths; ovary 1/2+ inferior, appearing more superior in fruit. |
sepals strongly reflexed, elliptic, (surfaces glabrous); petals white, not spotted, obovate to elliptic, clawed, 2.5–4.5 mm, longer than sepals; filaments linear, flattened; pistils distinct almost to base; ovary ± superior. |
Capsules | reddish to purplish, valvate. |
purple, valvate. |
Micranthes texana |
Micranthes howellii |
|
Phenology | Flowering late winter–spring. | Flowering early spring–early summer. |
Habitat | Sandy flats, rocky, open, wooded areas, granite outcrops | Wet, rocky ledges and crevices |
Elevation | 50-500 m (200-1600 ft) | 0-900 m (0-3000 ft) |
Distribution |
AR; GA; KS; LA; MO; OK; TX |
CA; OR
|
Source | FNA vol. 8, p. 68. | FNA vol. 8, p. 63. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Saxifraga texana | Saxifraga howellii |
Name authority | (Buckley) Small: Fl. S.E. U.S., 501. 1903 , | (Greene) Small: in N. L. Britton et al., N. Amer. Fl. 22: 140. (1905) |
Web links |