Ranunculus micranthus Nutt.

Rock buttercup (en)

Species

Angiosperms > Ranunculales > Ranunculaceae > Ranunculus

Characteristics

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. 2 n = 16.
More
Much like no. 16 [Ranunculus pensylvanicus L.f.]; some of the roots conspicuously thickened; lvs sparsely villous with straight hairs 1-2 mm, the basal broadly ovate in outline, broadly cuneate to rounded or truncate at base, or a few occasionally subcordate; 2n=16. Dry or moist woods; Mass. to N.C. and W.Va.; s. O. to Tenn., w. to S.D. and Okla. Apr., May.
Life form perennial
Growth form herb
Growth support -
Foliage retention
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.1 - 0.4
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 7-9
Soil humidity 3-7
Soil texture 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-9

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 30 - 90
Germination temperacture (C°) 10
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Ranunculus micranthus unspecified picture

Distribution

Ranunculus micranthus world distribution map, present in Canada and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:713216-1
WFO ID wfo-0001129306
COL ID 4RGYR
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Ranunculus micranthus Ranunculus delitescens Ranunculus cymbalistes Ranunculus micranthus var. micranthus Ranunculus micranthus var. delitescens Ranunculus micranthus var. cymbalistes Ranunculus abortivus var. micranthus