Jove's Buttercup - Ranunculus jovis
(see State Rank Reason below)
MNPS Threat Rank
State Rank Reason (see State Rank above)
This species is known from several southern tier counties in Montana. Several populations have moderate to large population sizes with some of them being relatively extensive in distribution. Most known populations occur on National Forest lands. This species blooms early in the growing season (usually right after the snow melts) and as a result is probably under-surveyed. Livestock grazing occurs within some occupied habitats apparently without detrimental effects. Other impacts to populations may occur as a result of activities such as road construction or invasion of noxious weeds, however, these impacts appear to be minimal.
- Details on Status Ranking and Review
Score0 - Large: Generally >100,000 individuals.
Score1 - Peripheral, Disjunct or Sporadic Distribution in MT: Widespread species that is peripheral, disjunct or sporadically distributed within MT such that it occurs in <5% of the state (<7,500 sq. miles or the combined area of Beaverhead and Ravalli Counties) or is restricted to 4-5 sub-basins.
Area of Occupancy
Score1-2 - Low to Moderate. Occurs in 4-25 Subwatersheds (6th Code HUC’s), though the species' distribution is not sufficiently documented to place it within one class.
CommentDocumented from 9 sub-watersheds and it likely occurs within additional ones.
Score0-1 - Low to Moderate.
ScoreNA - Rank factor not assessed.
Score0 - Low: Impacts, if any, to the species are expected to be minor or insignificant (affecting <10% of populations) in severity, scope and immediacy.
CommentPotential threats are insignificant in scope/severity.
Score0 - Low Vulnerability: Species does not have any unusual or specific life history or biological attributes or limted reproductive potential which makes it susceptible to extirpation from stochastic events or other adverse impacts to its habitat and thus slow to recover.
Raw Conservation Status Score
2 to 4 total points scored out of a possible 16 (Rarity factors and threats only).
Jove's Buttercup is a glabrous perennial with 1 to several stems that are 4-10 cm tall and arising from a cluster of fleshy, club-shaped roots. The basal leaves are often lacking, but, when present, are 2-3 cm long and have a petiole and a blade that is deeply divided into 3-5 narrow lobes. The stem leaves are clustered together and are longer than the basal leaves. The yellow flowers are solitary on the ends of stalks that are 2-6 cm long. The 5 separate petals are narrowly lance-shaped and 7-12 mm long. The glabrous sepals fall off shortly after opening. The fruit is an ovoid cluster of 50-200 achenes; these egg-shaped achenes are approximately 1 mm long, slightly compressed, and finely hairy, with a straight, slender beak that is approximately 0.5 mm long.
Flowering and fruiting April-June. Plants bloom soon after the snow melts.
This species can be distinguished from other buttercups by the clustered, fleshy roots and by the deeply 3-5 parted leaves.
Southeastern Idaho to Nevada, east to southwestern Montana, Yellowstone National Park, southwestern Wyoming, and adjacent Utah. Regional endemic.
Observations in Montana Natural Heritage Program Database
Number of Observations:
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(Observations spanning multiple months or years are excluded from time charts)
Sagebrush grasslands to open forest slopes in the montane and subalpine zones.
The following animal species have been reported as pollinators of this species or genera where their geographic ranges overlap: Bombus auricomus
, Bombus bifarius
, Bombus nevadensis
, and Bombus bimaculatus
(Macior 1968, Thorp et al. 1983).
- Literature Cited AboveLegend: View Online Publication
- Macior, L.M. 1968. Bombus (Hymenoptera, Apidae) queen foraging in relation to vernal pollination in Wisconsin. Ecology 49:20-25.
- Thorp, R.W., D.S. Horning, and L.L. Dunning. 1983. Bumble bees and cuckoo bumble bees of California (Hymenoptera: Apidae). Bulletin of the California Insect Survey 23:1-79.
- Additional ReferencesLegend: View Online Publication
Do you know of a citation we're missing?
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
- Nixon, J. 1993. Ranunculus jovis A. Nels. in Montana. Unpublished report for the Gallatin National Forest and Montana Natural Heritage Program. 13 pp.