E-Flora BC: Electronic Atlas of the Flora of British Columbia

Ranunculus glaberrimus var. ellipticus Hook. (Greene) Greene
sagebrush buttercup (elliptical buttercup)
Ranunculaceae (Buttercup family)

Introduction to Vascular Plants

© Bryan Kelly-McArthur  Email the photographer   (Photo ID #84031)

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Distribution of Ranunculus glaberrimus var. ellipticus
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Species Information

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General:
Perennial herb from cluster of fleshy roots, the roots 1-3 mm wide; stems prostrate to ascending, simple or branched above, 4-15 cm tall/long, smooth, not hollow.
Leaves:
Mostly basal, persistent, kidney- or egg-shaped, to narrowly elliptic, 0.7-5.2 cm long, 1-2 cm wide, margins entire or shallowly 3-lobed at tip, tips rounded to pointed, bases blunt to narrowed, the stalks long, slender; stem leaves alternate, unstalked or nearly so, deeply 3-lobed; smooth.
Flowers:
Inflorescence of 1- to 4-flowered, terminal cymes, on stalks to 10 cm long; receptacle smooth; petals 5-10 or more, distinct, yellow, 8-13 mm long, 5-12 mm wide, egg-shaped, nectary on upper surface, the nectary scale smooth or fringed with hairs, 1.5-2 mm long; sepals 5, early deciduous, spreading to bent back, 5-8 mm long, 3-7 mm wide, smooth above or sparsely hairy; stamens 40-80; pistils 30-150.
Fruits:
Achenes, numerous in a globe-shaped head 7-12 (20) mm long, 6-11 (20) mm wide, the achenes egg-shaped, plump, slightly winged, 1.4-2.2 mm long, 1.1-1.8 mm wide, usually minutely-hairy; beaks persistent, lanceolate- to awl-shaped, straight or curved, 0.4-1 mm long.
Notes:
Two sympatric and intergrading varieties occur in BC:

1. Basal leaf blades egg-shaped, usually shallowly lobed; stem leaves usually entire..................... var. glaberrimus

1. Basal leaf blades oblanceolate to elliptic, usually entire; stem leaves entire to 3-lobed..................... var. ellipticus Greene

Source: The Illustrated Flora of British Columbia

Habitat / Range

Mesic to dry grasslands, shrublands, sandy flats, rocky slopes and open forests in the steppe and montane zones; common in S BC east of the Coast-Cascade Mountains, infrequent northward; E to SK and S to NB, ND, NM, AZ and CA.

Source: The Illustrated Flora of British Columbia

Ecology

Ecological Framework for Ranunculus glaberrimus var. ellipticus

The table below shows the species-specific information calculated from
original data (BEC database) provided by the BC Ministry of Forests and Range.
(Updated August, 2013)

Site Information
Value / Class

Minimum

Average

Maximum

Elevation (metres) 1044 1264 1478
Slope Gradient (%) 15 37 70
Aspect (degrees)
[0 - N; 90 - E; 180 - S; 270 - W]
125 185 215
Soil Moisture Regime (SMR)
[0 - very xeric; 4 - mesic;
8 - hydric]
1 1 1
Modal Nutrient Regime
Class
B
Number of field plots
 species was recorded in:
3
Modal BEC Zone Class
ICH
All BEC Zones (# of stations/zone) species was recorded in: ICH(3)

Climate

The climate type for this species, as reported in the: "British Columbia plant species codes and selected attributes. Version 6 Database" (Meidinger et al. 2008), is not evaluated, unknown or variable.

Synonyms and Alternate Names

Ranunculus ellipticus Greene
Ranunculus glaberrimus var. buddii B. Boivin

Taxonomic and Nomenclatural Links

Additional Photo Sources

General References