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Northern Golden-carpet - Chrysosplenium tetrandrum
Native Species
Global Rank:
G5
State Rank:
S3S4
(see State Rank Reason below)
C-value:
4
Agency Status
USFWS:
USFS:
BLM:
External Links
State Rank Reason (see State Rank above)
See rank details.
- Details on Status Ranking and Review
Population Size
Score1 - Moderate: Generally 10,000-100,000 individuals.
Range Extent
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 - Moderate: Generally occurring in 11-25 Subwatersheds (6th Code HUC’s).
Environmental Specificity
Score1 - Moderate: Species is restricted to a specific habitat that is more widely distributed or to several restricted habitats and is typically dependent upon relatively unaltered, good-quality habitat (C Values of 5-7).
Trends
Score0-1 - Stable to Minor Declines:
Threats
Score0-1 - Low to Medium.
Intrinsic Vulnerability
Score0-1 - Low to Moderate Vulnerability.
Raw Conservation Status Score
Score
4 to 7 total points scored out of a possible 19.
General Description
Northern Golden-carpet is a small, creeping perennial, with braching stems up to 15 cm long that root at the nodes and are erect at the tips. The alternate leaves are chiefly clustered at the base or near the tip of the stems. Leaves are oval or kidney-shaped and 5-10 mm broad, with petioles up to 2 cm long and deep scalloping on the margins; the herbage is glabrous. The small flowers are borne in loose, few-flowered clusters at the ends of the stems; they lack petals, but have 4 green sepals that are approximately 1 mm long. The fruit is a two-lobed capsule that is partially embedded in the calyx cup.
Phenology
Flowering in June-August; fruiting in August.
Diagnostic Characteristics
The stoloniferous habit and small, apetalous flowers set this species apart from other Saxifrages in its habitat.
Species Range
Montana Range
Range Descriptions
Native
Range Comments
Circumpolar, south in North America to BC, WA, and CO. Peripheral.
Observations in Montana Natural Heritage Program Database
Number of Observations: 70
(Click on the following maps and charts to see full sized version)
Map Help and Descriptions
Relative Density
Recency
(Observations spanning multiple months or years are excluded from time charts)
Habitat
Seeps, wet rock ledges, and stream banks in the montane zone.
Stewardship Responsibility
References
- Additional ReferencesLegend:
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Bohm, B.A., F.W. Collins, and R. Bose. 1977. Flavonoids of Chrysosplenium tetrandrum. Phytochemistry 16:1205-1209.- Leck, M. A. 1980. Germination in Barrow, Alaska, tundra soil cores. Arctic and Alpine Research 12(3):343-349.
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2012. Manual of Montana Vascular Plants. Fort Worth, TX: BRIT Press. viii + 771 p.
- Lesica, P., M.T. Lavin, and P.F. Stickney. 2022. Manual of Montana Vascular Plants, Second Edition. Fort Worth, TX: BRIT Press. viii + 779 p.
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