View source for Coleogyne

{{Treatment/ID
|accepted_name=Coleogyne
|accepted_authority=Torrey
|publications={{Treatment/Publication
|title=Proc. Amer. Assoc. Advancem. Sci.
|place=4: 192. 1851
|year=1851
}}
|common_names=Blackbrush
|special_status={{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms=
|hierarchy=Rosaceae;Rosaceae subfam. Amygdaloideae;Rosaceae tribe Kerrieae;Coleogyne
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Rosaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Rosaceae subfam. Amygdaloideae]]</div><div class="higher-taxon"><small>tribe</small>[[Rosaceae tribe Kerrieae]]</div><div class="higher-taxon"><small>genus</small>[[Coleogyne]]</div></div>
|etymology=Greek koleos, sheath, and gyne, female, alluding to thin staminal tubelike sheath surrounding ovary and style
|volume=Volume 9
|mention_page=page 21, 386, 387
|treatment_page=page 390
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Shrubs,</b> 2–6(–10) dm, herbage strigose, with appressed medifixed hairs. <b>Stems</b> 15–150, stiffly erect; bark dark russet, becoming gray, striate; long shoots divaricately and oppositely branched, short shoots present; unarmed (stiff dead branches resembling thorns). <b>Leaves</b> persistent (drought deciduous), cauline, opposite and clustered on short shoots; stipules persistent on distal leaf-base margins, deltate-lanceolate, margins entire; petiole obscure; blade oblanceolate-spatulate, 0.6–1.2 cm, thickened, leathery, margins thick, rounded (not revolute), entire. <b>Inflorescences</b> terminal on long- and short-shoot spurs, flowers solitary; bracts present, reduced, leaflike. <b>Pedicels</b> reduced. <b>Flowers</b> 11–14 mm diam.; epicalyx bractlets 0; hypanthium campanulate, 1–2 mm; sepals 4 (rarely 5), weakly spreading, abaxially yellow, outer narrowly ovate, inner broadly ovate, margins thin; petals usually 0, infrequently 1–4(or 5) on scattered flowers, caducous, translucent yellow, spatulate; stamens (16–)20–25(–30), equal to sepals; torus extending into tubelike sheath surrounding ovary and proximal style (interior sericeous, exterior bearing some stamens); carpels 1 (rarely 2), glabrous except at style base, styles lateral, exserted beyond sheath, sericeous most of length; ovule 1, lateral. <b>Fruits</b> achenes, 1(–2), brown, ovoid-reniform, distally narrower, 5.3–5.8 mm, shiny, glabrous; hypanthium persistent; sepals persistent, ascending. <b>x</b> = 8.</span><!--

-->{{Treatment/Body
|distribution=sw United States.
|discussion=<p>Species 1.</p><!--
--><p><i>Coleogyne</i> is a xeromorphic desert shrub with floral features unusual within <i>Rosaceae</i>: a peculiar sheathlike torus surrounds the carpel and most of the style that bears some of the stamens, four sepals, and petals commonly absent but the inner sepal surface strongly yellow; vegetatively, <i>Coleogyne</i> is further distinguished by its opposite leaves and uniformly oriented medifixed trichomes. The single-ovuled, solitary ovary has a lateral style, suggesting relationship with multi-ovuled ancestors. Molecular data support relationships in the Kerrieae in subfam. Amygdaloideae (D. Potter et al. 2007).</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Coleogyne
|author=James Henrickson;Bruce D. Parfitt†
|authority=Torrey
|rank=genus
|parent rank=tribe
|synonyms=
|basionyms=
|family=Rosaceae
|distribution=sw United States.
|reference=None
|publication title=Proc. Amer. Assoc. Advancem. Sci.
|publication year=1851
|special status=Endemic
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V9/V9_652.xml
|subfamily=Rosaceae subfam. Amygdaloideae
|tribe=Rosaceae tribe Kerrieae
|genus=Coleogyne
}}<!--

-->[[Category:Treatment]][[Category:Rosaceae tribe Kerrieae]]