Micranthes odontoloma |
Micranthes micranthidifolia |
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brook saxifrage, stream saxifrage, streambank saxifrage |
branch-lettuce, lettuceleaf saxifrage |
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Habit | Plants solitary or sometimes grouped, rhizomatous. | Plants solitary or in groups, with bulbils on caudices. |
Leaves | basal; petiole rounded, 2–30 cm; blade round, 7–40 cm, thin to slightly fleshy, base cordate to truncate, margins regularly dentate, eciliate, surfaces sparsely brownish hairy abaxially, glabrous adaxially. |
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 | 10–30+-flowered, open, lax, flat-topped thyrses, 20–65(–85) cm, glabrous proximally, purple-tipped subsessile-glandular distally. |
(30–)50+–flowered, very open, lax thyrses, 30–75 cm, pink- to purplish-tipped stipitate-glandular; (bracts gradually smaller distally). |
Flowers | sepals reflexed, ovate to elliptic; petals white, each with 2 basal yellow spots, round to broadly elliptic, clawed, 3–4.5 mm, longer than sepals; filaments strongly club-shaped, (to 6 mm); pistils connate ca. 1/2 their lengths; ovary superior. |
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 | green to purple, ± folliclelike. |
green, sometimes purplish, folliclelike. |
2n | = 24, 48. |
= 22. |
Micranthes odontoloma |
Micranthes micranthidifolia |
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Phenology | Flowering summer–early autumn. | Flowering spring. |
Habitat | Wet meadows and stream banks | Rocky seepage slopes, stream banks |
Elevation | 1500-4000 m (4900-13100 ft) | 400-2100 m (1300-6900 ft) |
Distribution |
AZ; CA; CO; ID; MT; NM; NV; OR; UT; WA; WY; AB; BC
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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. 56. | FNA vol. 8, p. 60. |
Parent taxa | Saxifragaceae > Micranthes | Saxifragaceae > Micranthes |
Sibling taxa | ||
Synonyms | Saxifraga odontoloma | Robertsonia micranthidifolia, Aulaxis micranthidifolia, Saxifraga micranthidifolia |
Name authority | (Piper) A. Heller: Muhlenbergia 8: 60. 1912 , | (Haworth) Small: Fl. S.E. U.S., 501, 1331. 1903 , |
Web links |
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