View source for Achyronychia

{{Treatment/ID
|accepted_name=Achyronychia
|accepted_authority=Torrey & A. Gray
|publications={{Treatment/Publication
|title=Proc. Amer. Acad. Arts
|place=7: 330. 1868
|year=1868
}}
|common_names=Onyx flower;frost-mat
|basionyms=
|synonyms=
|hierarchy=Caryophyllaceae;Caryophyllaceae subfam. Paronychioideae;Achyronychia
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Caryophyllaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Caryophyllaceae subfam. Paronychioideae]]</div><div class="higher-taxon"><small>genus</small>[[Achyronychia]]</div></div>
|etymology=Greek achuron, chaff, and onyx, onychos, nail or fingernail, alluding to the chaffy sepals
|volume=Volume 5
|mention_page=page 5, 29, 47
|treatment_page=page 46
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> annual. <b>Taproots</b> slender. <b>Stems</b> prostrate to ascending, branched, terete to angular, base glabrous. <b>Leaves</b> opposite, connate or connected by thickened ridge or transverse wing from which stipules arise, sessile; stipules 2 per node, white, ovate to spatulate, margins fringed to ciliate, apex ± entire; blade obscurely 1-veined, spatulate, somewhat succulent, apex rounded. <b>Inflorescences</b> axillary cymes proliferating throughout length of stem; bracts paired, resembling stipules, smaller. <b>Flowers</b> sessile; hypanthium cylindric to urceolate, abruptly expanded proximally and distally in fruit; sepals 5, distinct, green, broadly ovate to orbiculate or reniform, 1.2–1.5 mm, herbaceous, margins white, scarious, apex broadly rounded, not hooded, not awned; nectaries at filament bases subtended adaxially by flaps of tissue; stamens 1–4; filaments distinct to base; staminodes 14–19, arising from hypanthium rim, filiform; styles 2, connate in proximal 1/2, filiform, 0.2–0.4 mm, glabrous proximally; stigmas 2, linear along adaxial surface of styles, obscurely papillate (50×). <b>Modified</b> utricles obconic, opening by 8 or 10, not spreading, toothlike valves. <b>Seeds</b> tan with red spot near one end, ovoid, slightly laterally compressed, smooth, marginal wing absent, appendage absent; embryo peripheral, straight to slightly curved.</span><!--

-->{{Treatment/Body
|distribution=sw United States;Mexico.
|discussion=<p>Species 1.</p><!--
--><p>Based on characters of the seeds and flowers, <i>Achyronychia</i> is closely related to and possibly congeneric with <i>Scopulophila</i>.</p>
|tables=
|references=
}}<!--

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-->{{#Taxon:
name=Achyronychia
|author=Ronald L. Hartman
|authority=Torrey & A. Gray
|rank=genus
|parent rank=subfamily
|synonyms=
|basionyms=
|family=Caryophyllaceae
|illustrator=Yevonn Wilson-Ramsey
|distribution=sw United States;Mexico.
|reference=None
|publication title=Proc. Amer. Acad. Arts
|publication year=1868
|special status=
|source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f6b125a955440c0872999024f038d74684f65921/coarse_grained_fna_xml/V5/V5_92.xml
|subfamily=Caryophyllaceae subfam. Paronychioideae
|genus=Achyronychia
}}<!--

-->[[Category:Treatment]][[Category:Caryophyllaceae subfam. Paronychioideae]]