Arcteranthis cooleyae
Cooley's buttercup
Ranunculaceae (Buttercup family)
Introduction to Vascular Plants
Cooley's buttercup
Ranunculaceae (Buttercup family)
Introduction to Vascular Plants
Species Information
General:
Perennial herb from fibrous-rooted stem-base; stems erect, 2-14 cm tall in flower, to 23 cm in fruit, smooth.
Leaves:
All basal, circular to kidney-shaped, deeply palmately 3- to 5-lobed, the edges overlapping somewhat, 1-4 cm long, 1.5-7 cm wide, the lobes again lobed, the ultimate segments elliptic or oblong, margins toothed, tips rounded and bearing minute projecting vein tips, the stalks to 15 cm long; stem leaves none to 2, scale-like.
Flowers:
Inflorescence a solitary terminal flower; flower stalks to 14 cm long; receptacle smooth; petals 11 to 15, distinct, yellow, oblanceolate to spoon-shaped, 8-12 mm long, 3-5 mm wide, long-clawed, nectary on upper surface, the nectary scale divided and V-shaped; sepals 5, spreading, persistent, greenish-yellow, 7-11 mm long, 4-7 mm wide, smooth; stamens (50) 75-125; pistils (30) 70-100.
Fruits:
Achenes, numerous in a globe-shaped head 7-8 mm long, 9-10 mm wide, the achenes elliptic, 2.4-4.6 mm long, 1.2-2.2 mm wide, smooth, membranous, margins and faces strongly veined; beaks persistent, thread-like, 1-1.8 mm long, hooked at tip.
Illustration
If more than one illustration is available for a species (e.g., separate illustrations were provided for two subspecies) then links to the separate images will be provided below. Note that individual subspecies or varietal illustrations are not always available.
Illustration Source: The Illustrated Flora of British Columbia
Ecology
Ecological Framework for Arcteranthis cooleyae
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)
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 |
||
|
Avg |
Min |
Max |
|
| Elevation
(metres) |
1344 | 690 | 1695 |
| Slope
Gradient (%) |
29 | 0 | 88 |
|
Aspect (degrees) |
348 | 13 | 300 |
| Soil
Moisture Regime (SMR) [0 - very xeric; 4 - mesic; 8 - hydric] |
3 | 1 | 5 |
| Modal
Nutrient Regime
Class |
C | ||
| #
of field plots species was recorded in: |
19 | ||
| Modal
BEC Zone Class |
CMA | ||
|
All BEC Zones (# of stations/zone) species was recorded in |
BAFA(2), CMA(8), ESSF(2), MH(5), SWB(1) | ||
|
Source:
Klinkenberg 2013
|
|||
Habitat and Range
Wet to moist snowbeds, streambanks, ledges, gullies, scree slopes and heath in the subalpine and alpine zones; common in NW BC (including the Queen Charlotte Islands), infrequent in SW BC, rare east of Coast Mountains; N to AK and S to WA.Status Information
Synonyms
Synonyms and Alternate Names:
Ranunculus cooleyae Vasey & Rose