Ranunculus subg. Pallasiantha

L. D. Benson

Amer. J. Bot. 27: 807. 1940.

Treatment appears in FNA Volume 3. Mentioned on page 132.

Plants glabrous. Stems leafy, creeping or floating, not bulbous-based, without bulbils. Roots nodal, never tuberous. Leaves cauline, simple, petiolate; blade undivided or 3-lobed, much longer than wide, margins entire. Inflorescences axillary, solitary flowers. Flowers pedicellate (pedicels naked or leafy); sepals deciduous soon after anthesis, 3; petals 7-11, white or reddish; nectary scale attached on 3 sides for at least half its length, forming pocket (sometimes mouth of pocket prolonged as short flap), glabrous, free margin entire; style present. Fruits achenes, 1-locular, 4.2-5.2 mm; achene body oblong-lenticular, 1.3-1.7 times as wide as thick, prolonged beyond seed as corky distal appendage; wall thick, smooth; margin low corky band; beak much shorter than achene body.

Distribution

North America, Eurasia

Discussion

Species 1 (1 in the flora).

Selected References

None.

oblong-lenticular +
1.3-1.7 times as wide as thick +
Alan T. Whittemore +
L. D. Benson +
cuneate +, truncate +  and cordate +
curved +  and straight +
0 cm0 mm <br />0 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
much longer than wide +
3-lobed;undivided +
large +  and small +
globose;cylindric +
2-50-flowered +
0 cm0 mm <br />0 m <br /> (25 cm250 mm <br />0.25 m <br />) +
North America +  and Eurasia +
showy +  and inconspicuous +
sessile +  and aggregate +
cylindric;obovoid;cylindric;obovoid;globose;lenticular;discoid +
0.42 cm4.2 mm <br />0.0042 m <br /> (0.52 cm5.2 mm <br />0.0052 m <br />) +
reniform +  and linear +
petiolate +  and simple +
whorled +, opposite +  and alternate +
parted +  and lobed +
palmate +  and pinnate +
toothed;crenate;toothed;crenate;entire +
reddish +  and white +
distinct +
conspicuous +
linear +  and orbiculate +
reduced +
0.1 cm1 mm <br />0.001 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
4 +  and 250 +
Amer. J. Bot. +
not arillate +  and stalked +
white;yellow;white;yellow;purple;sometimes;green +
deciduous +
distinct +
oblong +  and elliptic ovate or lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
(5-)10-many +
not bulbous-based +  and leafy +
floating +  and creeping +
persistent +
Ranunculus subg. Pallasiantha +
Ranunculus +
subgenus +
perennial +  and annual +
herbaceous +  and woody +