Ranunculus micranthus

Nuttall in J. Torrey and A. Gray

in J. Torrey and A. Gray, Fl. N. Amer. 1: 18. 1838.

Endemic
Synonyms: Ranunculus micranthus var. cymbalistes (Greene) Fernald Ranunculus micranthus var. delitescens (Greene) Fernald
Treatment appears in FNA Volume 3.

Stems erect, 11-40 cm, villous, each with 8-35 flowers. Roots dimorphic, some filiform, 0.2-0.6 mm thick and some with tuberous bases 1-2 mm thick. Basal leaves persistent, blades ovate, orbiculate, or transversely elliptic, outer blades undivided, inner 3-parted or 3-foliolate, 1-3.3 × 1-3 cm, base truncate to broadly obtuse or sometimes weakly cordate, margins crenate, apex rounded-obtuse. Flowers: pedicels glabrous or villous; receptacle glabrous; sepals 2-4 × 1-1.5 mm, abaxially glabrous or pubescent, hairs colorless; petals 5, 1.5-3.5 × 0.5-1.5 mm; nectary scale glabrous. Heads of achenes globose to cylindric, 3-7 × 2-4 mm; achenes 1.1-1.5 × 1-1.3 mm, glabrous; beak subulate, straight or curved, 0.2-0.3 mm. 2n = 16.


Phenology: Flowering spring (Mar–May).
Habitat: Woods, meadows, and clearings
Elevation: 0-1000 m

Distribution

V3 147-distribution-map.gif

Ala., Ark., Conn., D.C., Ill., Ind., Kans., Ky., Md., Mass., Miss., Mo., N.J., N.Y., N.C., Ohio, Okla., Pa., S.Dak., Tenn., Va., W.Va.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Ranunculus micranthus"
not prolonged +
asymmetrically thick-lenticular +  and compressed-globose +
1.2-2 times as wide as thick +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
1mm;1.3mm +
rounded-obtuse +
Alan T. Whittemore +
Nuttall in J. Torrey and A. Gray +
cordate +, truncate +  and broadly obtuse +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Ranunculus sect. Marsypadenium +
curved +  and straight +
subulate +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
elliptic;orbiculate;elliptic;orbiculate;ovate +
large +  and small +
globose;cylindric +
sometimes;sessile;nearly sessile +
1-50-flowered +
0 cm0 mm <br />0 m <br /> (25 cm250 mm <br />0.25 m <br />) +
Ala. +, Ark. +, Conn. +, D.C. +, Ill. +, Ind. +, Kans. +, Ky. +, Md. +, Mass. +, Miss. +, Mo. +, N.J. +, N.Y. +, N.C. +, Ohio +, Okla. +, Pa. +, S.Dak. +, Tenn. +, Va. +  and W.Va. +
0-1000 m +
showy +  and inconspicuous +
sessile +  and aggregate +
cylindric;obovoid;cylindric;obovoid;globose;lenticular;discoid +
Woods, meadows, and clearings +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
globose;cylindric +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
axillary +  and terminal +
1 cm10 mm <br />0.01 m <br /> (3.3 cm33 mm <br />0.033 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
reniform +  and linear +
compound +  and simple +
whorled +, opposite +  and alternate +
cauline +  and basal +
parted +  and lobed +
palmate +  and pinnate +
inconspicuous +
villous +  and glabrous +
distinct +
1.5mm;3.5mm +
conspicuous +
linear +  and orbiculate +
reduced +
0.1 cm1 mm <br />0.001 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Flowering spring (Mar–May). +
4 +  and 250 +
in J. Torrey and A. Gray, Fl. N. Amer. +
filiform +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
not arillate +  and stalked +
again +  and undivided +
parted +  and lobed +
white;yellow;white;yellow;purple;sometimes;green +
deciduous +
distinct +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
pubescent +  and glabrous +
oblong +  and elliptic ovate or lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
W2 +  and Endemic +
(5-)10-many +
not bulbous-based +
11 cm110 mm <br />0.11 m <br /> (40 cm400 mm <br />0.4 m <br />) +
persistent +
Ranunculus micranthus var. cymbalistes +  and Ranunculus micranthus var. delitescens +
Ranunculus micranthus +
Ranunculus sect. Epirotes +
species +
perennial +  and annual +
pubescent +, pilose +, sometimes +  and glabrous +
herbaceous +  and woody +