dcsimg

Comprehensive Description

provided by North American Flora
Acomastylis rossii (R. Br.) Greene, Leaflets 1: 174. 1906
Sieversia Rossii R. Br. Chlor. Melv. 18. 1823. Geum Rossii Seringe, in DC. Prodr. 2: 553. 1825.
Perennial, with a thick, scaly rootstock; stems 1-3 dm. high, glabrous below, finely puberulent above; basal leaves interruptedly pinnatifid, 5-10 cm. long, sparingly puberulent or glabrate, ciliolate on the margins; principal segments 11-17, obovate or cuneate in outline, 8-15 mm. long, 3-5-toothed or sometimes cleft; stem-leaves 1-3, small, pinnately 3-7-parted; flowers 1-3; hypanthium short-turbinate or nearly saucer-shaped, about 4 mm. high and 8 mm. broad, short-pilose; bracts lance-oblong or elliptic, 4—5 mm. long; sepals broadly ovate, acuminate, 6-8 mm. long; petals yellow, broadly obovate, about 1 cm. long, venose; body of the achenes lanceolate, 2.5 mm. long, hirsute-strigose; style glabrous, about 4 mm. long.
Type locality: Melville Island.
Distribution: Arctic America, from Melville Island to Bering Sea; also in Kamtschatka.
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bibliographic citation
Per Axel Rydberg. 1913. ROSACEAE (pars). North American flora. vol 22(5). New York Botanical Garden, New York, NY
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North American Flora

Geum rossii

provided by wikipedia EN

Geum rossii is a species of flowering plant in the rose family known by the common names Ross' avens and alpine avens. It is native to North America where its distribution spans northern Canada and the high mountains of the western United States. It grows at high-latitude and high-elevation habitat, including the Arctic and in alpine climates. There are three varieties. One, var. depressum, is endemic to Washington in the United States, where it is limited to the Wenatchee Mountains.[1]

The plants' flowers are similar in appearance to those of species in the Potentilla (or cinquefoil) genus. Geum rossii has less flowers per stem and leaves which are somewhat fernlike.[2]

References

  1. ^ Geum rossii var. depressum. USFS Celebrating Wildflowers Critically Imperiled Plant Profile.
  2. ^ Blackwell, Laird R. (2006). Great Basin Wildflowers: A Guide to Common Wildflowers of the High Deserts of Nevada, Utah, and Oregon (A Falcon Guide) (1st ed.). Guilford, Conn.: Morris Book Publishing, LLC. p. 166. ISBN 0-7627-3805-7. OCLC 61461560.{{cite book}}: CS1 maint: date and year (link)

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Geum rossii: Brief Summary

provided by wikipedia EN

Geum rossii is a species of flowering plant in the rose family known by the common names Ross' avens and alpine avens. It is native to North America where its distribution spans northern Canada and the high mountains of the western United States. It grows at high-latitude and high-elevation habitat, including the Arctic and in alpine climates. There are three varieties. One, var. depressum, is endemic to Washington in the United States, where it is limited to the Wenatchee Mountains.

The plants' flowers are similar in appearance to those of species in the Potentilla (or cinquefoil) genus. Geum rossii has less flowers per stem and leaves which are somewhat fernlike.

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