Overview

Comprehensive Description

Nomenclatural History

 

Cladothamnus campanulatusGreene,Erythraea3:65(1895). Described from Canada (British Columbia) and the USA (Washington State). Azaleastrum albiflorum (Hooker) Rydberg, Mem. New York Bot. Gard. 1:297 (1900). A. warreniiA. Nelson, Bot. Gaz. 56:67 (1913). Type: USA, Colorado, Jackson Co., Mt Zarkel, 14 vii 1911, Warren. R. warrenii(A. Nelson) Macbridc, Contr. Gray Herb n.s. 56:55(1918). Ic: Bot. Mag. 65, t 3670(1839).

 
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Distribution

National Distribution

Canada

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Physical Description

Diagnostic Description

 

Deciduous shrub to c.2 m high, young branches with brown strigose hairs. Leaves scattered along the shoots or clustered at their ends; blade membranous, narrowly elliptic or lanceolate to oblanceolate, to c.80 x 24 mm, base narrowly cuneate, apex acute, margin minutely serrate, when young ciliate on the mid-rib and margin, becoming more or less glabrous; petiole c.4 mm long, with strigose hairs. Inflorescence buds lateral, spaced along the shoots of the previous year, above leaf scars, 1-2-flowcred, flowers pendulous, borne below the expanded leaves; bud scales mostly fallen at anthesis; pedicels up to c. 10 mm long, with a minute glandular indumentum, and strigose hairs around the base. Calyx lobes oblong-ligulate, deeply divided, c.8 x 3-4 mm, with glandular hairs on the margin and strigose and glandular hairs on the outer surface. Corolla bowl-shaped, almost actino-morphic, c.20 mm across, with a short tube and spreading lobes, white (rarely marked with yellow), usually minutely puberulous on the inner and outer surfaces. Stamens 10(12 in rare6-merous flowers) equal, filaments c.lOmm long, pilose below. Ovary globose, 2 mm long, setose and glandular; style straight, impressed, pilose below. Capsule globose, enclosed in the persistent calyx, c.8 mm long, glandular and with strigose hairs. Seed with ligulate appendages at each end.

 
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Ecology

Habitat

 

Undershrub in upper montane forest and forming thickets in open places at and above the tree line and along stream banks

 
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Molecular Biology and Genetics

Molecular Biology

Barcode data: Rhododendron albiflorum

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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Statistics of barcoding coverage: Rhododendron albiflorum

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 2
Specimens with Barcodes: 3
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

Canada

Rounded National Status Rank: NNR - Unranked

United States

Rounded National Status Rank: NNR - Unranked

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NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

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