young shoot icon Home All plants About

Ranunculus trichophyllus Chaix

Water buttercup (en), Renoncule à feuilles capillaires (fr), Renoncule de Drouet (fr)

Species

Angiosperms > Ranunculales > Ranunculaceae > Ranunculus

Characteristics

Perennial or annual, mostly submerged aquatic herb with flowers emerging above water. Stems branching, herbaceous, hollow, erect or creeping, rooting at lower nodes. Leaves alternate: petiole 0.25–4 cm long; lamina globose to obconical, 1.5–4.5 cm long, repeatedly tri-or di-chotomously divided into rigid or flaccid capillary segments, which spread in 3 dimensions; auricled basal sheath oblong to ovate, adnate for c. ⅔ length. Flowers solitary, seemingly leaf-opposed along stem. Peduncles 1–5 cm long, placing the flowers above the water surface, usually recurved in fruit. Sepals usually 5, narrow-ovate, 2–3.5 mm long, spreading, greenish, blue-tipped, caducous. Petals usually 5, ovate to obovate, 3–5.5 (–7) mm long, white with a yellow claw; nectary-scale lunate. Receptacle globular, hairy. Stamens (5–) 9–15. Carpels 15–33, hairy when immature, sometimes glabrous when mature. Achenes ovoid to obovoid, 1.5–2 mm long, usually sparsely hairy; beak subterminal, very short.
More
Aquatic perennial, rarely terrestrial; roots all fibrous. Rhizome creeping. Stems slender to stout, prostrate or ascending, up to 1-(2) m long. Lvs divided into many filiform segments, glabrous but for a few short hairs at segment tips, (1)-3-6-(8) cm long; segments narrowly linear in terrestrial plants; petiole (2)-5-30 mm long. Fls solitary, 8-15 mm diam. Pedicels terete, glabrous, (2)-3-6-(8) cm long. Sepals 5, bluish near tip, reflexed, 2.5-4 mm long. Petals 5, white with yellow base, 6-8 × c. 4 mm long; nectary single, 0.5-1 mm from petal base, lunate. Receptacle usually with a few sparse hairs at base, elongating slightly at fruiting. Achenes 30-60, glabrous, ovoid, slightly flattened, transversely rugose; body 1.5-2 mm long; beak straight, c. 0.5 mm long.
Life form perennial
Growth form herb
Growth support aquatic free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination entomogamy
Spread hydrochory
Mature width (meter) -
Mature height (meter) 0.35 - 0.7
Root system creeping-root fibrous-root rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Grows in freshwater ponds and slow streams.
Light 4-7
Soil humidity 10-12
Soil texture 1-2
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-10

Usage

Uses forage medicinal
Edible -
Therapeutic use Asthma (unspecified), Malaria (unspecified), Poison (unspecified), Rheumatism (unspecified)
Human toxicity toxic (whole)
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

Habit

Ranunculus trichophyllus habit picture by Pedro Salgadinho (cc-by-sa)
Ranunculus trichophyllus habit picture by Converio Fabio (cc-by-sa)
Ranunculus trichophyllus habit picture by huy HO (cc-by-sa)

Leaf

Ranunculus trichophyllus leaf picture by Stephan Gerbeaud (cc-by-sa)
Ranunculus trichophyllus leaf picture by Pedro Salgadinho (cc-by-sa)
Ranunculus trichophyllus leaf picture by Miguel A. C. (cc-by-sa)

Flower

Ranunculus trichophyllus flower picture by Zotova Elena (cc-by-sa)
Ranunculus trichophyllus flower picture by Pedro Salgadinho (cc-by-sa)
Ranunculus trichophyllus flower picture by Tobias Franz (cc-by-sa)

Fruit

Ranunculus trichophyllus fruit picture by Yoan MARTIN (cc-by-sa)
Ranunculus trichophyllus fruit picture by Llandrich anna (cc-by-sa)

Distribution

Ranunculus trichophyllus world distribution map, present in American Samoa, Australia, Bosnia and Herzegovina, Canada, China, France, India, Kazakhstan, Nepal, New Zealand, Pakistan, Russian Federation, United States of America, and South Africa

Conservation status

Ranunculus trichophyllus threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:30048831-2
WFO ID wfo-0001129323
COL ID 4RHZH
BDTFX ID 55437
INPN ID 117255
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Ranunculus curvirostris Ranunculus drouetii Ranunculus cesatianus Ranunculus leonardii Batrachium bipontinum Batrachium caespitosum Batrachium lutulentum Batrachium minimum Batrachium villosum Ranunculus divaricatus Ranunculus filicaulis Ranunculus aschersonii Ranunculus brattius Ranunculus britannicus Ranunculus martini Ranunculus saichinensis Ranunculus paucistamineus Ranunculus peucedanoides Batrachium aspergillifolium Batrachium drouetii Batrachium flaccidum Batrachium pantothrix Batrachium paucistamineum Batrachium pectinatum Batrachium pedunculare Batrachium rigidum Batrachium saichinense Ranunculus trichophyllus Batrachium divaricatum Ranunculus hydrocharis f. drouetii Ranunculus pantothrix Ranunculus flaccidus Ranunculus dolichopodus Ranunculus capillus-naidis Ranunculus jingpoensis Batrachium jingponse Batrachium kabulense Batrachium radians Batrachium aquatile subsp. caespitosum Batrachium aquatile var. flaccidum Ranunculus hydrocharis f. trichophyllus Ranunculus aquatilis var. capillaceus Ranunculus trichophyllus var. trichophyllus Ranunculus aquatilis var. trichophyllus Ranunculus aquatilis subsp. trichophyllus Ranunculus aquatilis var. brachypus Ranunculus aquatilis var. lalondei Batrachium trichophyllum var. caespitosus Ranunculus flaccidus var. drouetii Ranunculus pantothrix var. caespitosus Batrachium paucistamineum var. drouetii Ranunculus aquatilis var. caespitosus Ranunculus hydrocharis var. caespitosus Ranunculus aquatilis var. divaricatus Batrachium trichophyllum var. hirtellum Batrachium trichophyllum var. jingpoense Batrachium aquatile subsp. pantothrix
WorldFloraDB 2024