Micranthes texana |
Micranthes micranthidifolia |
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Texas saxifrage |
branch-lettuce, lettuceleaf saxifrage |
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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 ± indistinct, (broad), flattened, 3–15 cm; blade lanceolate to oblanceolate, 4–35 cm, thin, base attenuate, margins irregularly serrate to dentate, ciliate, surfaces sparsely hairy. |
Inflorescences | 20+-flowered, branched, ± capitate thyrses, 10–15 cm, hairy, sometimes purple-tipped stipitate-glandular. |
(30–)50+–flowered, very open, lax thyrses, 30–75 cm, pink- to purplish-tipped stipitate-glandular; (bracts gradually smaller distally). |
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, oblong; petals white, with 2 basal yellow spots that sometimes appear as 1 (sometimes faded in dried material), ± elliptic to spatulate, clawed, 2–3 mm, longer than sepals; filaments strongly club-shaped; pistils distinct almost to base; ovary superior, (to 1/3 adnate to hypanthium). |
Capsules | reddish to purplish, valvate. |
green, sometimes purplish, folliclelike. |
2n | = 22. |
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Micranthes texana |
Micranthes micranthidifolia |
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Phenology | Flowering late winter–spring. | Flowering spring. |
Habitat | Sandy flats, rocky, open, wooded areas, granite outcrops | Rocky seepage slopes, stream banks |
Elevation | 50-500 m (200-1600 ft) | 400-2100 m (1300-6900 ft) |
Distribution |
AR; GA; KS; LA; MO; OK; TX |
GA; KY; MD; NC; PA; SC; VA; WV
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Discussion | Micranthes micranthidifolia was formerly gathered by local people in the southern Appalachians as a spring “green” (hence the common name, “branch” being dialect for a small stream); it is still occasionally seen in local grocery stores. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 8, p. 68. | FNA vol. 8, p. 60. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Saxifraga texana | Robertsonia micranthidifolia, Aulaxis micranthidifolia, Saxifraga micranthidifolia |
Name authority | (Buckley) Small: Fl. S.E. U.S., 501. 1903 , | (Haworth) Small: Fl. S.E. U.S., 501, 1331. 1903 , |
Web links |