Micranthes tempestiva

(Elvander & Denton) Brouillet & Gornall

J. Bot. Res. Inst. Texas 1: 1021. 2007 ,.

Common names: Storm saxifrage
Basionym: Saxifraga tempestiva Elvander & Denton Madroño 23: 346, figs. 1, 3A. 1976
Treatment appears in FNA Volume 8. Treatment on page 69. Mentioned on page 49, 51, 70.
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Plants solitary or in groups, with bulbils on caudices. Leaves basal; petiole indistinct (leaves appearing sessile), flattened, 2–8+ mm; blade oblanceolate to obovate, 4–10 (–30) mm, fleshy, base cuneate to attenuate, margins entire or minutely denticulate, eciliate, (apex acute to obtuse or rounded), surfaces ± glabrous; (venation pinnate or palmate). Inflorescences 5–15 (–20) -flowered, congested thyrses, 3–10 (–15) cm, glabrous or sparsely purple-tipped stipitate-glandular. Flowers: sepals spreading, ovate; petals white, not spotted, linear to obovate, clawed, to 1.5 mm, shorter than sepals; filaments linear, flattened; pistils connate to 1/2 their lengths; ovary inferior. Capsules reddish purple, valvate. 2n = 10.


Phenology: Flowering summer.
Habitat: Rocky ledges, slopes, or snow-bed meadows
Elevation: 2400-3200 m

Discussion

Of conservation concern.

Micranthes tempestiva is known only from the Bitterroot Mountains and Anaconda Range.

Selected References

None.

Lower Taxa

None.

"full" is not a number.

... more about "Micranthes tempestiva"
epigynous +, perigynous +  and hypogynous +
palmate +  and pinnate +
acute +  and obtuse or rounded +
Luc Brouillet +  and Patrick E. Elvander† +
(Elvander & Denton) Brouillet & Gornall +
cuneate +  and attenuate +
Saxifraga tempestiva +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
dentate +, serrate +  and entire +
glandular-ciliate +  and ciliate +
oblanceolate +  and obovate +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
2(-3)-beaked +  and folliclelike +
reddish purple +
3-carpellate +  and 2-carpellate +
connate +  and distinct +
Storm saxifrage +
ebracteate +, bracteate +  and 2-300(-1000+)-flowered +
2400-3200 m +
flattened +
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 ledges, slopes, or snow-bed meadows +
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 />) +
5-15(-20)-flowered +
opposite +  and alternate +
denticulate +  and entire +
crassinucellate +, unitegmic +  and bitegmic +
epigynous +, perigynous +  and hypogynous +
purple-margined +
not spotted +  and white +
reddish purple +  and purple +
distinct +
clawed +, linear +  and obovate +
0 cm0 mm <br />0 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
peltate +  and jointed +
flattened +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Flowering summer. +
2(-3)-carpellate +
0 +  and 1/2 +
unequal +
J. Bot. Res. Inst. Texas +
straight +
muricate +, cellular-rugulose +, tuberculate +, pitted +, papillate +  and wrinkled +
ovoid +, ellipsoid +  and oblong +
reddish +  and green +
distinct +
unbranched +  and branched +
persistent +
horizontal +  and erect +
2 +  and 3 +
connate +  and distinct +
Micranthes tempestiva +
Micranthes +
species +
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 m <br />) +
stipitate-glandular +, purple-tipped +  and glabrous +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
dentate +, serrate +  and entire +
stoloniferous +  and rhizomatous +
annual +, biennial +  and perennial +