Difference between revisions of "Eriogonum corymbosum var. orbiculatum"

(S. Stokes) Reveal & Brotherson

Great Basin Naturalist 27: 221. 1968.

Common names: Orbicular-leaf wild buckwheat
Basionym: Eriogonum effusum subsp. orbiculatum S. Stokes Eriogonum, 79. 1936
Treatment appears in FNA Volume 5. Treatment on page 258. Mentioned on page 256.
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|name=Eriogonum effusum subsp. orbiculatum
 
|name=Eriogonum effusum subsp. orbiculatum
 
|authority=S. Stokes
 
|authority=S. Stokes
 +
|rank=subspecies
 
|publication_title=Eriogonum,
 
|publication_title=Eriogonum,
 
|publication_place=79. 1936
 
|publication_place=79. 1936
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|elevation=900-1600(-2300) m
 
|elevation=900-1600(-2300) m
 
|distribution=Ariz.;Colo.;Utah.
 
|distribution=Ariz.;Colo.;Utah.
|discussion=<p>Variety orbiculatum is encountered in northeastern Arizona (Coconino and Navajo counties), western Colorado (Mesa, Montezuma, San Juan, and San Miguel counties), and southeastern Utah (Emery, Garfield, Grand, Kane, San Juan, and Wayne counties). It is worthy of the serious horticultural efforts now being made to develop cultivars for the arid garden, with selection development emphasizing large, round, fully flowering shrubs capable of surviving a wide range of temperatures. A mature plant in full flower is a remarkable sight. The hemispheric shrubs wholly and densely blanketed by bright white flowers and set against the deep red sands and sandy-clay hills in Monument Valley are seen in numerous photographs and several John Ford movies. An expression from Gypsum Valley, San Miguel County, Colorado, may well reprecent an undescribed variety allied to <i></i></i>var.<i><i> orbiculatum</i>.</p>
+
|discussion=<p>Variety orbiculatum is encountered in northeastern Arizona (Coconino and Navajo counties), western Colorado (Mesa, Montezuma, San Juan, and San Miguel counties), and southeastern Utah (Emery, Garfield, Grand, Kane, San Juan, and Wayne counties). It is worthy of the serious horticultural efforts now being made to develop cultivars for the arid garden, with selection development emphasizing large, round, fully flowering shrubs capable of surviving a wide range of temperatures. A mature plant in full flower is a remarkable sight. The hemispheric shrubs wholly and densely blanketed by bright white flowers and set against the deep red sands and sandy-clay hills in Monument Valley are seen in numerous photographs and several John Ford movies. An expression from Gypsum Valley, San Miguel County, Colorado, may well reprecent an undescribed variety allied to <i></i>var.<i> orbiculatum</i>.</p>
 
|tables=
 
|tables=
 
|references=
 
|references=
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-->{{#Taxon:
 
-->{{#Taxon:
 
name=Eriogonum corymbosum var. orbiculatum
 
name=Eriogonum corymbosum var. orbiculatum
|author=
 
 
|authority=(S. Stokes) Reveal & Brotherson
 
|authority=(S. Stokes) Reveal & Brotherson
 
|rank=variety
 
|rank=variety
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|publication year=1968
 
|publication year=1968
 
|special status=
 
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V5/V5_482.xml
+
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse_grained_fna_xml/V5/V5_482.xml
 
|subfamily=Polygonaceae subfam. Eriogonoideae
 
|subfamily=Polygonaceae subfam. Eriogonoideae
 
|genus=Eriogonum
 
|genus=Eriogonum

Revision as of 21:54, 16 December 2019

Shrubs, (3–)5–15 × 5–15 dm. Leaves cauline 1/2 or more length of flowering stem; petiole 0.5–1.5 cm; blade broadly ovate to nearly orbiculate, 1–3(–3.5) × 1–3(–3.5) cm, floccose to tomentose on both surfaces or floccose adaxially. Inflorescences compact and rather flat-topped, 3–10 cm; branches densely tomentose. Involucres 2–3.5 × 1.5–2.5 mm. Flowers 2.5–3 mm; perianth white, glabrous.


Phenology: Flowering Aug–Oct.
Habitat: Sandy to gravelly flats, washes, slopes, mixed grassland, saltbush, blackbrush, and sagebrush communities, pinyon-juniper woodlands
Elevation: 900-1600(-2300) m

Discussion

Variety orbiculatum is encountered in northeastern Arizona (Coconino and Navajo counties), western Colorado (Mesa, Montezuma, San Juan, and San Miguel counties), and southeastern Utah (Emery, Garfield, Grand, Kane, San Juan, and Wayne counties). It is worthy of the serious horticultural efforts now being made to develop cultivars for the arid garden, with selection development emphasizing large, round, fully flowering shrubs capable of surviving a wide range of temperatures. A mature plant in full flower is a remarkable sight. The hemispheric shrubs wholly and densely blanketed by bright white flowers and set against the deep red sands and sandy-clay hills in Monument Valley are seen in numerous photographs and several John Ford movies. An expression from Gypsum Valley, San Miguel County, Colorado, may well reprecent an undescribed variety allied to var. orbiculatum.

Selected References

None.

Lower Taxa

None.
James L. Reveal +
(S. Stokes) Reveal & Brotherson +
Eriogonum effusum subsp. orbiculatum +
Orbicular-leaf wild buckwheat +
Ariz. +, Colo. +  and Utah. +
900-1600(-2300) m +
Sandy to gravelly flats, washes, slopes, mixed grassland, saltbush, blackbrush, and sagebrush communities, pinyon-juniper woodlands +
Flowering Aug–Oct. +
Great Basin Naturalist +
Illustrated +  and Endemic +
Eriogonum effusum subsp. corymbosum +
Eriogonum corymbosum var. orbiculatum +
Eriogonum corymbosum +
variety +