Stems erect or ascending, not rooting nodally, glabrous or hirsute. Roots slender or fusiform-thickened basally, glabrous. Leaves: basal leaf-blades with base acute; proximal cauline leaf-blades lanceolate, ovate, or elliptic, 1.8-14.1 × 0.7-2.9 cm, base acuminate to rounded, margins entire or serrulate, apex obtuse to acuminate. Inflorescences: bracts lanceolate. Flowers: receptacle glabrous; sepals 5, spreading or reflexed from base, 2-6 × 1-4 mm, glabrous or hirsute; petals 5-12, 5-14 × 2-8 mm; nectary scales glabrous. Heads of achenes hemispheric to globose, 3-7 × 4-8 mm; achenes 1.6-2.8 × 1.2-2 mm, glabrous or rarely hispid; beak lance-subulate, straight or weakly curved, 0.4-1.2 mm.

Distribution

B.C., Calif., Colo., Idaho, Mont., Nev., Oreg., Utah, Wash., Wyo.

Discussion

Varieties 6 (6 in the flora).

Selected References

None.

Key

1 Petals 7–12 on most flowers, 2–3 mm broad. Ranunculus alismifolius var. montanus
1 Petals 4–6(–8), 2–8 mm broad. > 2
2 Stems 3.5–8 mm thick; leaf margins serrulate. Ranunculus alismifolius var. alismifolius
2 Stems 1–3 mm thick; leaf margins entire. > 3
3 Leaf blades ovate or elliptic. Ranunculus alismifolius var. alismellus
3 Leaf blades broadly to narrowly lanceolate. > 4
4 Petals 10–14 mm; California and Nevada. Ranunculus alismifolius var. lemmonii
4 Petals 5–8 mm; widespread. > 5
5 Roots fusiform-thickened proximally; stems and petioles glabrous or pubescent. Ranunculus alismifolius var. davisii
5 Roots not or scarcely fusiform-thickened proximally; stems and petioles glabrous. Ranunculus alismifolius var. hartwegii
... more about "Ranunculus alismifolius"
not prolonged +
globose-lenticular +  and globose +
1-2 times as wide as thick +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
hispid +  and glabrous +
not ornamented +
1.2mm;2mm +
obtuse +  and acuminate +
Alan T. Whittemore +
Geyer ex Bentham +
acuminate +  and rounded +
Ranunculus subg. Flammula +
curved +  and straight +
lance-subulate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
lanceolate +
large +  and small +
globose;cylindric +
1-15(-40)-flowered +
0 cm0 mm <br />0 m <br /> (25 cm250 mm <br />0.25 m <br />) +
B.C. +, Calif. +, Colo. +, Idaho +, Mont. +, Nev. +, Oreg. +, Utah +, Wash. +  and Wyo. +
showy +  and inconspicuous +
sessile +  and aggregate +
cylindric;obovoid;cylindric;obovoid;globose;lenticular;discoid +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
hemispheric;globose +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
axillary +  and terminal +
reniform +  and linear +
petiolate +, compound +  and simple +
whorled +, opposite +  and alternate +
cauline +, all +  and basal +
parted +  and lobed +
palmate +  and pinnate +
serrulate +  and entire +
lobed;entire;toothed;entire +
distinct +
5mm;14mm +
conspicuous +
linear +  and orbiculate +
reduced +
0.1 cm1 mm <br />0.001 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
4 +  and 250 +
1.8 cm18 mm <br />0.018 m <br /> (14.1 cm141 mm <br />0.141 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (2.9 cm29 mm <br />0.029 m <br />) +
Pl. Hartw., +
nodal +  and basal +
fusiform-thickened +  and slender +
tuberous-thickened +
not arillate +  and stalked +
white;yellow;white;yellow;purple;sometimes;green +
deciduous +
distinct +
reflexed +  and spreading +
hirsute +  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 /> (0.4 cm4 mm <br />0.004 m <br />) +
Illustrated +
(5-)10-many +
prostrate +  and decumbent +
ascending +  and erect +
hirsute +  and glabrous +
persistent +
Ranunculus alismifolius +
Ranunculus sect. Flammula +
species +
perennial +  and annual +
pilose +  and glabrous +
herbaceous +  and woody +