Micranthes micranthidifolia

(Haworth) Small

Fl. S.E. U.S., 501, 1331. 1903 ,.

Common names: Branch-lettuce
IllustratedEndemic
Basionym: Robertsonia micranthidifolia Haworth Syn. Pl. Succ., 322. 1812
Synonyms: Aulaxis micranthidifolia (Haworth) Haworth Saxifraga micranthidifolia (Haworth) Steudel
Treatment appears in FNA Volume 8. Treatment on page 60. Mentioned on page 53, 61.
Revision as of 11:54, 30 July 2020 by imported>Volume Importer
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Plants solitary or in groups, with bulbils on caudices. Leaves 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 (30–) 50+–flowered, very open, lax thyrses, 30–75 cm, pink to purplish-tipped stipitate-glandular; (bracts gradually smaller distally). Flowers: 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, sometimes purplish, folliclelike. 2n = 22.


Phenology: Flowering spring.
Habitat: Rocky seepage slopes, stream banks
Elevation: 400-2100 m

Distribution

V8 108-distribution-map.gif

Ga., Ky., Md., N.C., Pa., S.C., Va., W.Va.

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.

Selected References

None.

Lower Taxa

None.

"thin" is not a number."full" is not a number.

epigynous +, perigynous +  and hypogynous +
palmate +  and pinnate +
acute +  and obtuse or rounded +
Luc Brouillet +  and Patrick E. Elvander† +
(Haworth) Small +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
attenuate +
Robertsonia micranthidifolia +
dentate +, serrate +  and entire +
glandular-ciliate +  and ciliate +
lanceolate +  and oblanceolate +
4 cm40 mm <br />0.04 m <br /> (35 cm350 mm <br />0.35 m <br />) +
purplish;green +
3-carpellate +  and 2-carpellate +
connate +  and distinct +
Branch-lettuce +
ebracteate +, bracteate +  and 2-300(-1000+)-flowered +
Ga. +, Ky. +, Md. +, N.C. +, Pa. +, S.C. +, Va. +  and W.Va. +
400-2100 m +
club--shaped +
bracteate +  and 2-70+[-1000]-flowered +
unisexual +  and bisexual +
2 cm20 mm <br />0.02 m <br /> (125 cm1,250 mm <br />1.25 m <br />) +
2-3(-4)-beaked +  and folliclelike +
Rocky seepage slopes, stream banks +
multicellular +
glabrous +, stipitate-glandular +  and hairy +
purplish +  and green +
free +  and adnate +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
open +  and (30-)50+-flowered +
opposite +  and alternate +
crassinucellate +, unitegmic +  and bitegmic +
epigynous +, perigynous +  and hypogynous +
purple-margined +
reddish purple +  and purple +
distinct +
unlobed +  and lobed +
peltate +  and jointed +
flattened +
3 cm30 mm <br />0.03 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Flowering spring. +
2(-3)-carpellate +
unequal +
Fl. S.E. U.S., +
straight +
muricate +, cellular-rugulose +, tuberculate +, pitted +, papillate +  and wrinkled +
ovoid +, ellipsoid +  and oblong +
reddish +  and green +
distinct +
Illustrated +  and Endemic +
unbranched +  and branched +
persistent +
horizontal +  and erect +
2 +  and 3 +
connate +  and distinct +
Aulaxis micranthidifolia +  and Saxifraga micranthidifolia +
Micranthes micranthidifolia +
Micranthes +
species +
stipitate-glandular +
30 cm300 mm <br />0.3 m <br /> (75 cm750 mm <br />0.75 m <br />) +
dentate +, serrate +  and entire +
stoloniferous +  and rhizomatous +
annual +, biennial +  and perennial +