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Comprehensive Description ( Anglèis )

fornì da North American Flora
Ivesia webberi A. Gray, Proc. Am. Acad. 10: 71. 1874
Poientilla Webberi Greene, Pittonia 1 : 105. 1887.
Horkelia Webberi Rydb. Mem. Dep. Bot. Columbia Univ. 2 : 149. 1898.
Perennial, with a deep root, crowned with an erect, short, scaly caudex ; stems several, slender, short, less than 1 dm. long, nearly scapose, more or less tinged with brown, glabrate ; basal leaves 3-4 dm. long, many, pinnate, with 8-10 crowded pairs of leaflets, grayish-silky, but not densely so; leaflets about 1 cm. long, divided to the base into linear or lanceolate acute segments ; petioles with long fine silky hairs ; cyme subcapitate ; hypanthium cupulate, tinged with brown, slightly silky, 4 mm. in diameter; bractlets linear or linear-lanceolate, shorter than the ovate or ovate-lanceolate sepals, which are about 4 mm. long; petals oblanceolate, yellow, scarcely equaling the sepals ; stamens 5; filaments filiform.
Type locality : Sierra Valley, California.
Distribution : Northern Sierra Nevada of California and Nevada.
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sitassion bibliogràfica
Frederick Vernon Coville, Nathaniel Lord Britton, Henry Allan Gleason, John Kunkel Small, Charles Louis Pollard, Per Axel Rydberg. 1908. GROSSULARIACEAE, PLATANACEAE, CROSSOSOMATACEAE, CONNARACEAE, CALYCANTHACEAE, and ROSACEAE (pars). North American flora. vol 22(3). New York Botanical Garden, New York, NY

Ivesia webberi ( Anglèis )

fornì da wikipedia EN

Ivesia webberi is a species of flowering plant in the rose family known by the common names wire mousetail and Webber's ivesia. It is native to the United States, where it occurs in the northernmost part of the Sierra Nevada and the adjacent Modoc Plateau in California, its range extending just into Nevada.[1]

This is a small perennial herb forming a clump on the ground in the clay soil of the local sage scrub. Each leaf is up to 7 centimeters long and is made up of several hairy, lance-shaped green leaflets each 3 to 10 millimeters long. The red to reddish-green stems are generally not erect and are up to 15 centimeters long on the ground or drooping over it. A stem bears an inflorescence made up of a single cluster of several flowers. Each flower is about a centimeter wide with five triangular to lance-shaped greenish sepals and five bright yellow petals. In the center of the flower are five stamens and usually five pistils.

References

  1. ^ Ivesia webberi. NatureServe. 2012.

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Ivesia webberi: Brief Summary ( Anglèis )

fornì da wikipedia EN

Ivesia webberi is a species of flowering plant in the rose family known by the common names wire mousetail and Webber's ivesia. It is native to the United States, where it occurs in the northernmost part of the Sierra Nevada and the adjacent Modoc Plateau in California, its range extending just into Nevada.

This is a small perennial herb forming a clump on the ground in the clay soil of the local sage scrub. Each leaf is up to 7 centimeters long and is made up of several hairy, lance-shaped green leaflets each 3 to 10 millimeters long. The red to reddish-green stems are generally not erect and are up to 15 centimeters long on the ground or drooping over it. A stem bears an inflorescence made up of a single cluster of several flowers. Each flower is about a centimeter wide with five triangular to lance-shaped greenish sepals and five bright yellow petals. In the center of the flower are five stamens and usually five pistils.

licensa
cc-by-sa-3.0
drit d'autor
Wikipedia authors and editors
original
visité la sorgiss
sit compagn
wikipedia EN