Micranthes marshallii

(Greene) Small in N. L. Britton et al.

in N. L. Britton et al., N. Amer. Fl. 22: 145. 1905 ,.

Common names: Marshall’s saxifrage
Basionym: Saxifraga marshallii Greene Pittonia 1: 159. 1888
Treatment appears in FNA Volume 8. Treatment on page 63. Mentioned on page 53, 64.

Plants in groups or sometimes mat-forming, rhizomatous. Leaves basal; petiole flattened, 3–15 cm; blade ovate, 1–5 cm, ± fleshy, base attenuate, margins shallowly crenate-serrate (teeth ca. 2 mm), eciliate, surfaces sparsely tangled, reddish brown-hairy abaxially, glabrate adaxially. Inflorescences 15–50+-flowered, open, lax thyrses, 20–40 cm, purple-tipped stipitate-glandular. Flowers: sepals reflexed, lanceolate to oblong; petals white, with 2 basal yellow spots (often faded when dried), ovate, clawed, 1.5–4.5 mm, longer than sepals; filaments strongly club-shaped, sometimes petaloid (short-clawed, equaling petals); pistils distinct almost to base; ovary superior, (to 1/3 adnate to hypanthium). Capsules greenish to reddish purple, folliclelike. 2n = 20.


Phenology: Flowering spring.
Habitat: Deeply shaded watercourses, stream banks, seeps
Elevation: 100-1000 m

Discussion

Selected References

None.

Lower Taxa

None.

"full" is not a number.

... more about "Micranthes marshallii"
epigynous +, perigynous +  and hypogynous +
palmate +  and pinnate +
acute +  and obtuse or rounded +
Luc Brouillet +  and Patrick E. Elvander† +
(Greene) Small in N. L. Britton et al. +
attenuate +
Saxifraga marshallii +
dentate +, serrate +  and entire +
glandular-ciliate +  and ciliate +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
greenish;reddish purple +
3-carpellate +  and 2-carpellate +
connate +  and distinct +
Marshall’s saxifrage +
ebracteate +, bracteate +  and 2-300(-1000+)-flowered +
Calif. +  and Oreg. +
100-1000 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 +
Deeply shaded watercourses, stream banks, seeps +
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 15-50+-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 +
in N. L. Britton et al., N. Amer. Fl. +
straight +
muricate +, cellular-rugulose +, tuberculate +, pitted +, papillate +  and wrinkled +
ovoid +, ellipsoid +  and oblong +
reddish +  and green +
distinct +
lanceolate +  and oblong +
unbranched +  and branched +
persistent +
horizontal +  and erect +
2 +  and 3 +
connate +  and distinct +
reddish brown-hairy +
Micranthes marshallii +
Micranthes +
species +
purple-tipped +
stipitate-glandular +
20 cm200 mm <br />0.2 m <br /> (40 cm400 mm <br />0.4 m <br />) +
dentate +, serrate +  and entire +
annual +, biennial +  and perennial +
plant +  and mat-forming +