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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
from FNA
AR; GA; KS; LA; MO; OK; TX
[BONAP county map]
from FNA
CA; OR
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 8, p. 68. FNA vol. 8, p. 63.
Parent taxa Saxifragaceae > Micranthes Saxifragaceae > Micranthes
Sibling taxa
M. apetala, M. aprica, M. bryophora, M. californica, M. calycina, M. careyana, M. caroliniana, M. eriophora, M. ferruginea, M. foliolosa, M. fragosa, M. gaspensis, M. gormanii, M. hieraciifolia, M. hitchcockiana, M. howellii, M. idahoensis, M. integrifolia, M. lyallii, M. marshallii, M. micranthidifolia, M. nelsoniana, M. nidifica, M. nivalis, M. nudicaulis, M. occidentalis, M. odontoloma, M. oregana, M. palmeri, M. pensylvanica, M. petiolaris, M. razshivinii, M. reflexa, M. rhomboidea, M. rufidula, M. spicata, M. stellaris, M. subapetala, M. tempestiva, M. tenuis, M. tischii, M. tolmiei, M. unalaschcensis, M. virginiensis
M. apetala, M. aprica, M. bryophora, M. californica, M. calycina, M. careyana, M. caroliniana, M. eriophora, M. ferruginea, M. foliolosa, M. fragosa, M. gaspensis, M. gormanii, M. hieraciifolia, M. hitchcockiana, M. idahoensis, M. integrifolia, M. lyallii, M. marshallii, M. micranthidifolia, M. nelsoniana, M. nidifica, M. nivalis, M. nudicaulis, M. occidentalis, M. odontoloma, M. oregana, M. palmeri, M. pensylvanica, M. petiolaris, M. razshivinii, M. reflexa, M. rhomboidea, M. rufidula, M. spicata, M. stellaris, M. subapetala, M. tempestiva, M. tenuis, M. texana, M. tischii, M. tolmiei, M. unalaschcensis, M. virginiensis
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)
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