Ranunculus occidentalis var. dissectus

L. F. Henderson

Rhodora 32: 25. 1930.

Endemic
Treatment appears in FNA Volume 3.

Stems erect to spreading, 1-3 mm thick, hirsute or sometimes glabrous. Basal leaf-blades 3-parted or sometimes 3-foliolate, ultimate segments lanceolate or oblanceolate, margins entire or sparsely dentate. Flowers: sepals 5, 4-6 mm; petals 5-6, 6-10 × 3-6 mm. Achenes 2.6-3.6 × 2-2.8 mm, glabrous; beak lance-subulate, straight, 1.2-2.2 mm.


Phenology: Flowering spring–summer (May–Jul).
Habitat: Wet to dry meadows
Elevation: 1000-1800 m

Discussion

Ranunculus occidentalis var. dissectus is found in the Great Basin, Klamath region, and southern Cascade Mountains. As noted below, it is very similar to var. howellii.

Selected References

None.

Lower Taxa

None.

"high" is not a number.

0.36 cm3.6 mm <br />0.0036 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
not prolonged +
3-15 times as wide as thick +
0.26 cm2.6 mm <br />0.0026 m <br /> (0.36 cm3.6 mm <br />0.0036 m <br />) +
2mm;2.8mm +
acute +  and rounded-obtuse +
Alan T. Whittemore +
L. F. Henderson +
1.5 cm15 mm <br />0.015 m <br /> (5.3 cm53 mm <br />0.053 m <br />) +
2.2 cm22 mm <br />0.022 m <br /> (8 cm80 mm <br />0.08 m <br />) +
not bulbous +
cuneate +, truncate +  and cordate +
straight +
persistent +
lance-subulate +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
large +  and small +
globose;cylindric +
1-50-flowered +
0 cm0 mm <br />0 m <br /> (25 cm250 mm <br />0.25 m <br />) +
Calif. +  and Oreg. +
1000-1800 m +
showy +  and inconspicuous +
sessile +  and aggregate +
cylindric;obovoid;cylindric;obovoid;globose;lenticular;discoid +
Wet to dry meadows +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
hemispheric +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
axillary +  and terminal +
reniform +  and linear +
whorled +, opposite +  and alternate +
cauline +  and basal +
parted +  and lobed +
palmate +  and pinnate +
dentate +  and entire +
0.1mm;0.2mm +
distinct +
6mm;10mm +
conspicuous +
linear +  and orbiculate +
reduced +
0.1 cm1 mm <br />0.001 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Flowering spring–summer (May–Jul). +
4 +  and 250 +
nodal +  and basal +
not arillate +  and stalked +
1(-2)×-lobed +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
white;yellow;white;yellow;purple;sometimes;green +
deciduous +
distinct +
oblong +  and elliptic ovate or lanceolate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
(5-)10-many +
erect +  and spreading +
glabrous +  and hirsute +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
persistent +
Ranunculus sect. Chrysanthe +
Ranunculus occidentalis var. dissectus +
Ranunculus occidentalis +
variety +
perennial +  and annual +
glabrous +  and hispid +
herbaceous +  and woody +