familyRanunculaceae
genusRanunculus
subgenusRanunculus subg. Ranunculus
sectionRanunculus sect. Ranunculus
speciesRanunculus occidentalis
Ranunculus occidentalis var. howellii
Pittonia 3: 14. 1896.
Endemic
Treatment appears in FNA Volume 3.
Revision as of 07:37, 30 July 2020 by imported>Volume Importer
Stems erect to reclining, 1-3 mm thick, hirsute or sometimes glabrous. Basal leaf-blades 3-parted, ultimate segments narrowly elliptic, margins entire or dentate. Flowers: sepals 5, 4-6 mm; petals 5-6, 6-10 × 3-5 mm. Achenes 3.4-4.8 × 2.6-3.2 mm, glabrous; beak lanceolate, straight, 1.6-2.2 mm.
Phenology: Flowering spring–summer (Apr–Jul).
Habitat: Meadows
Elevation: 900-1400 m
Discussion
Ranunculus occidentalis var. howellii, R. occidentalis var. dissectus, and R. austro-oreganus form a distinctive group distinguishable in the R. occidentalis complex by the straight achene beak. They may be difficult to separate, however; further study of their relationships is needed.
Selected References
None.
Lower Taxa
None.
"high" is not a number.
... more about "Ranunculus occidentalis var. howellii"
not prolonged +
flattened +
3-15 times as wide as thick +
glabrous +
2.6mm;3.2mm +
dehiscing +
foliolate +
compound +
parted +
not bulbous +
straight +
persistent +
much shorter +
terminal +
absent +
lanceolate +
leaflike +
absent +
sepaloid +
absent +
aggregated +
globose;cylindric +
tuberous +
compound +
alternate +
parted +
1-50-flowered +
sessile +
small +
abundant +
filiform +
pedicellate +
symmetric +
bisexual +
3;5 +
cylindric;obovoid;cylindric;obovoid;globose;lenticular;discoid +
hemispheric +
compound +
undivided +
petiolate +
free +
low +
toothed +
0.1mm;0.2mm +
absent +
attached +
glabrous +
hypogynous +
yellow +
developed +
distinct +
6mm;10mm +
absent +
conspicuous +
5;6 +
reduced +
sheathing +
absent +
simple +
Pittonia +
1896 +
glabrous +
tuberous +
narrow +
narrow +
tuberous +
1;many +
1(-2)×-lobed +
petaloid +
spurred +
imbricate +
white;yellow;white;yellow;purple;sometimes;green +
deciduous +
distinct +
? (?) +
reflexed +
hirsute +
veined +
Endemic +
distinct +
(5-)10-many +
absent +
bulbous +
rooting +
absent +
tuberous +
persistent +
absent +
Ranunculus occidentalis var. howellii +
Ranunculus occidentalis +
variety +
thick +
rhizomatous +
high +
narrow +