Penstemon davidsonii

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Penstemon davidsonii
A flowering Penstemon davidsonii in Olympic National Park , Washington
Systematics
Class : Asterids Order : Mint family (Lamiales) Family : Plantain family (Plantaginaceae) Genre : Beard thread ( penstemon ) Type : Penstemon davidsonii
Scientific name
Penstemon davidsonii
Greene

Penstemon davidsonii is a species of beard thread ( Penstemon ) within the plantain family (Plantaginaceae). It is common in western North America .

description

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Vegetative characteristics

Penstemon davidsonii is a perennial evergreen subshrub that reaches heights of up to 10 centimeters. The bush-like shoots form flat mats with upright flowering shoots. The leaves are about 1.5 inches long, elliptical to almost round, hairless, green and quite thick; only a few and smaller stem leaves.

Generative characteristics

Compact, little-flowered, one-sided and glandular inflorescence. The bluish petals are fused tubular.

Chromosome number

The number of chromosomes is 2n = 16.

distribution

Penstemon davidsonii occurs in western North America from southern British Columbia via Washington , Oregon and northern Nevada to California .

Taxonomy

The first description of Penstemon davidsonii was in 1892 by Edward Lee Greene in Pittonia, Volume 2, page 241. The specific epithet davidsonii honors George Davidson .

use

Penstemon davidsonii is used as an ornamental plant.

Individual evidence

1. ↑ ^{a b} Penstemon davidsonii . Lady Bird Johnson Wildflower Center. Retrieved June 21, 2014.
2. ↑ ^{a b} David Giblin: Penstemon davidsonii . Burke Museum of Natural History and Culture. Retrieved June 21, 2014.
3. ^ ^{A b} Dee Strickler, Anne Morley: Northwest Penstemons. The Flower Press, Columbia Falls 1997. ISBN 1-56044-572-6 , p. 3
4. ^ Penstemon davidsonii at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
5. ↑ ^{a b c} Penstemon in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved December 15, 2017.
6. ^ Penstemon davidsonii at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed December 10, 2018.
7. ↑ ( Page no longer available , search in web archives: Davidson's beardtongue - John Davidson - The Legacy of a Canadian Botanist In: UBC Botanical Garden and Center for Plant Research )