Micranthemum umbrosum

(J. F. Gmelin) S. F. Blake

Rhodora 17: 131. 1915.

Common names: Shade mudflower baby's tears
WeedyIllustrated
Basionyms: Globifera umbrosa J. F. Gmelin Syst. Nat. 1: 32. 1791
Treatment appears in FNA Volume 17. Treatment on page 358. Mentioned on page 356.

Leaves opposite; petiole 0–0.4 mm; blade orbiculate, ovate, or obovate, 2–9 × 1.5–7 mm. Pedicels 0.2–0.9 mm. Flowers chasmogamous; calyx symmetric, 1.2–1.5 mm, tube 0.2–0.4 mm, lobes 0.9–1.1 mm; corolla slightly bilaterally symmetric, weakly bilabiate, ± rotate, 1.3–1.5 mm, shorter than or equal to calyx, tube 0.7–1 mm, abaxial lobe 1, not forming a prominent lip, 0.8–1 mm, lateral 2, 0.6–0.7 mm, adaxial 0.4–0.5 mm. Capsules 1.1–1.2 × 0.9–1 mm. Seeds oblong to narrowly obconic, 0.3–0.4 × 0.1–0.2 mm.


Phenology: Flowering late summer–fall.
Habitat: Swamps, margins of ponds, lakes, and sluggish streams, wet ditches.
Elevation: 0–200 m.

Distribution

Ala., Ark., Fla., Ga., La., Miss., N.C., S.C., Tenn., Tex., Va., West Indies, Central America, South America

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Micranthemum umbrosum"
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Brian R. Keener +
(J. F. Gmelin) S. F. Blake +
Globifera umbrosa +
0.2 cm2 mm <br />0.002 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
obovate +, ovate +  and orbiculate +
not leathery +
1.5mm;7mm +
campanulate +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Shade mudflower +  and baby's tears +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Ala. +, Ark. +, Fla. +, Ga. +, La. +, Miss. +, N.C. +, S.C. +, Tenn. +, Tex. +, Va. +, West Indies +, Central America +  and South America +
0–200 m. +
bearing a process +  and gibbous +
poricidal +  and septicidal +
Swamps, margins of ponds, lakes, and sluggish streams, wet ditches. +
prominent +
oblanceolate;lanceolate +
unequal +
toothed +, undulate +  and entire +
tenuinucellate +  and unitegmic +
orthotropous +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
0 cm0 mm <br />0 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
Flowering late summer–fall. +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
oblong +  and narrowly obconic +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
Weedy +  and Illustrated +
repent +  and prostrate +
prostrate +  and weakly ascending +
weakly +  and 4-angled +
neither +, clavate +, capitate +  and 2-lobed +
Hemianthus +
Micranthemum umbrosum +
Micranthemum +
species +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
perennial +  and annual +