Ranunculus recurvatus Poir.

Ranunculus recurvatus plant

Family - Ranunculuaceae

Stems - To 30cm tall, erect, single from base, herbaceous, hirsute, from fleshy roots and a bulbous crown, branching, hollow (especially at the apex).

Ranunculus recurvatus stemStem.

Leaves - Alternate, petiolate. Basal leaves with petiole to 15cm long. Petioles hirsute, sheathing at the base, reduced upward on the stem. Blades divided nearly to the base, 3-lobed, +/-10cm long, 8cm long. Divisions cleft or divided again, serrate (the apex of the teeth with minute whitish tips). Leaves with impressed veins above, dull green and sparsely pubescent above, shiny green and glabrous to sparsely pubescent below. Margins ciliate to antrorse strigose. Blade divisions of upper leaves tapered to the base, serrate in the apical 1/2.

Ranunculus recurvatus leafLower leaf.

Ranunculus recurvatus leavesUpper leaves.

Inflorescence - Single axillary flowers. Peduncles antrorse apressed pubescent to glabrous, short in flower, quickly elongating in fruit, to +/-3cm long.

Flowers - Petals 5, yellowish, +/-3mm long, 1mm broad, glabrous, oblong, with a fornicle-like nectary near base adaxially. Stamens many, +/-20, from base of pistil. Filaments whitish, glabrous, 2-3mm long. Anthers yellow, .6mm long. Achenes compressed, green, glabrous, uncinate-beaked. Receptacle with white straight hairs. Fruiting heads globose, 5-6mm in diameter. Beaks of achenes 1-1.2mm long. Achenes -2mm in diameter. Sepals 5, reflexed, cupped, 5mm long, 1.5mm broad, glabrous, with scarious margins. Margins sometimes involute.

Ranunculus recurvatus flowerFlower.

Ranunculus recurvatus fruitsFruits.

Flowering - May - July.

Habitat - Moist areas along spring branches, margins of small streams, moist to wet ground, moist bluffs, rich open woods.

Origin - Native to U.S.

Other info. - This species can be found throughout Missouri wherever streams, creeks, and rivers flow. The plant is fairly easy to ID in the field because of the hirsute stem, distinctive achenes, and habitat.

Photographs taken in Brown Summit, NC., 4-27-02.


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