Difference between revisions of "Enemion hallii"

(A. Gray) J. R. Drummond & Hutchinson

Bull. Misc. Inform. Kew 1920: 161. 1920.

Common names: Willamette rue-anemone
EndemicSelected by author to be illustrated
Basionym: Isopyrum hallii A. Gray
Treatment appears in FNA Volume 3.
FNA>Volume Importer
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|elevation=100-1500 m
 
|elevation=100-1500 m
 
|distribution=Oreg.;Wash.
 
|distribution=Oreg.;Wash.
|discussion=<p>Enemion hallii differs from all other North American members of the genus in having well-defined cymose inflorescences. Its closest ally is thought to be the east-Asian species E. raddeanum Regel, from which it differs in having long-petiolate leaves and cymose inflorescences with bracteolate subumbels. Enemion raddeanum is characterized by sessile or short-petiolate leaves and simple, umbellate inflorescences.</p>
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|discussion=<p><i>Enemion hallii</i> differs from all other North American members of the genus in having well-defined cymose inflorescences. Its closest ally is thought to be the east-Asian species E. raddeanum Regel, from which it differs in having long-petiolate leaves and cymose inflorescences with bracteolate subumbels. <i>Enemion</i> raddeanum is characterized by sessile or short-petiolate leaves and simple, umbellate inflorescences.</p>
 
|tables=
 
|tables=
 
|references=
 
|references=
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|publication year=1920
 
|publication year=1920
 
|special status=Endemic;Selected by author to be illustrated
 
|special status=Endemic;Selected by author to be illustrated
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V3/V3_1034.xml
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|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/8f726806613d60c220dc4493de13607dd3150896/coarse_grained_fna_xml/V3/V3_1034.xml
 
|genus=Enemion
 
|genus=Enemion
 
|species=Enemion hallii
 
|species=Enemion hallii

Revision as of 17:13, 18 September 2019

Stems 35-85 cm, with short, stout, woody rhizome; roots fibrous. Leaves: leaflets variously lobed and sharply dentate, apex acute, glandular-apiculate; surfaces abaxially pubescent. Inflorescences terminal or axillary, well-defined 3-10-flowered cymes with small scalelike bracts; peduncle not strongly clavate. Flowers: sepals 5-10.5 × 2.5-6.5 mm; stamens 50-75; filaments filiform to club-shaped, 4.5-8.2 mm. Follicles sessile, upright to widely divergent; body widely elliptic to widely obovate, 3.8-7 mm, gradually contracted into style beak; beak 1.1-2.5 mm. Seeds 1.8-2.2 mm, glabrous.


Phenology: Flowering late spring–early summer.
Habitat: Moist woods and streambanks
Elevation: 100-1500 m

Discussion

Enemion hallii differs from all other North American members of the genus in having well-defined cymose inflorescences. Its closest ally is thought to be the east-Asian species E. raddeanum Regel, from which it differs in having long-petiolate leaves and cymose inflorescences with bracteolate subumbels. Enemion raddeanum is characterized by sessile or short-petiolate leaves and simple, umbellate inflorescences.

Selected References

None.

Lower Taxa

None.
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