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Eastwoodia elegans

(Eastwoodia, Yellow Aster, Yellow Mock Aster, Yellow Mock-Aster)

Overview

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Vulnerable
Threat status

Common Names

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Common Names in English:

Eastwoodia, Yellow Aster, Yellow Mock Aster, Yellow Mock-Aster, Yellow-Aster

Description

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Genus Eastwoodia

Shrubs , rounded , 30-100 cm. Stems erect , branched, glabrous , often resinous . Leaves cauline ; alternate; sessile; blades 1-nerved, linear to linear-oblanceolate, margins entire (apices acute), faces glabrous or sparsely hirtellous, gland-dotted (in pits), slightly resinous. Heads discoid , borne singly or in loosely corymbiform arrays. Involucres hemispheric to campanulate , impressed at base , 4-6 × 7-22 mm. Phyllaries 30-45 in 3-5 series, stiffly erect, green on distal 1 / 2, 1-nerved (midnerves indurate and raised; slightly convex , strongly keeled by midnerves), oblanceolate , unequal, thick, proximally indurate, margins narrowly scarious , (apices acute to apiculate ) faces glabrous, resinous. Receptacles flat, pitted , paleate (paleae falling quickly, oblanceolate, chartaceous ). Ray florets 0. Disc florets 30-40, bisexual , fertile ; corollas yellow, tubes longer than cylindric to funnel-shaped throats , lobes 5, spreading to reflexing, narrowly lanceolate; style branch appendages triangular-lanceolate. Cypselae (brownish ) narrowly obconic, 3-4-angled, strigoso-sericeous (especially on angles ) ; pappi persistent , of 5-8 linear-lanceolate, thick, flat, minutely erose scales in 1 series. x = 9.

Species 1: sw United States.

Eastwoodia is recognized by its white-barked, shrubby habit, linear, gland-dotted, resinous leaves, discoid heads on leafy stems, paleate receptacles, and pappi of long scales.Guy L. Nesom "Eastwoodia". in Flora of North America Vol. 20 Page 3, 6, 169. Oxford University Press. Online at EFloras.org.

Physical Description

Species Eastwoodia elegans

Stems: older with white and shredding bark . Leaves yellow-green, relatively evenly spaced and little reduced in size to immediately proximal to heads , 1.5-4 cm, sometimes in axillary clusters . Cypselae 1.7-2 mm; pappi nearly equal to corollas. 2n = 18. [source]

Habit: Subshrub , Shrub

Flowers: Bloom Period: April, May, June, July. • Flower Color: yellow

Habitat

Dry hillsides with other shrubs ; 60-1300 m (Ref. 99990).

Biology

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Reproduction

Duration: Perennial

Taxonomy

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Unambiguous Synonyms

  1. Eastwoodia elegans Brandeg.

Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: 15-Mar-2000

Similar Species

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Members of the genus Eastwoodia

There are approximately 2 species in this genus:

E. elegans (Eastwoodia) · E. nivea

More Info

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal February 16, 2008:

Identifiers

Footnotes

Last Revised: 2008-10-01