View source for Spergularia diandra

{{Treatment/ID
|accepted_name=Spergularia diandra
|accepted_authority=(Gussone) Heldreich
|publications={{Treatment/Publication
|title=Pl. Atticae
|place=unnumbered. 1851
|year=1851
}}
|common_names= Alkali sand-spurrey  
|special_status={{Treatment/ID/Special_status
|code=I
|label=Introduced
}}
|basionyms={{Treatment/ID/Basionym
|name=Arenaria diandra
|authority=Gussone
|rank=species
|publication_title=Fl. Sicul. Prodr.
|publication_place=1: 515. 1827
}}
|synonyms={{Treatment/ID/Synonym
|name=Spergularia salsuginea
|authority=Fenzl
|rank=species
}}
|hierarchy=Caryophyllaceae;Caryophyllaceae subfam. Polycarpoideae;Spergularia;Spergularia diandra
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Caryophyllaceae]]</div><div class="higher-taxon"><small>subfamily</small>[[Caryophyllaceae subfam. Polycarpoideae]]</div><div class="higher-taxon"><small>genus</small>[[Spergularia]]</div><div class="higher-taxon"><small>species</small>[[Spergularia diandra]]</div></div>
|volume=Volume 5
|mention_page=page 17
|treatment_page=page 19
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>annual, delicate, 5–15 cm, stipitate-glandular throughout or nearly so. <b>Taproots</b> slender. <b>Stems</b> erect to diffusely spreading, much-branched proximally and distally; main stem 0.3–0.7 mm diam. proximally. <b>Leaves</b>: stipules inconspicuous, silvery to dull tan, broadly triangular, 1.5–2 mm, apex acuminate; blade linear, 0.6–2.3 cm, somewhat fleshy, apex blunt to apiculate; axillary leaf cluster usually absent. <b>Cymes</b> simple but commonly 4–8+-compound. <b>Pedicels</b> erect to reflexed in fruit. <b>Flowers</b>: sepals connate 0.2–0.5 mm proximally, lobes 1-veined or not, lanceolate to ovate, 2.3–3.1 mm, enlarging little in fruit, margins 0.1–0.3 mm wide, apex obtuse to rounded; petals white, elliptic to ovate, 0.7–0.8 times sepals; stamens 4–7; styles 0.4–0.6 mm. <b>Capsules</b> greenish tan, 2.5–2.8 mm, 0.9–1.2 times sepals. <b>Seeds</b> black, often with silvery, not iridescent tinge, with submarginal groove, pyriform, somewhat compressed, 0.4–0.6 mm, shiny, sculpturing of low, elongate tubercles, not papillate (40×); wing absent. <b>2n</b> = 18 (Europe).</span><!--

-->{{Treatment/Body
|phenology=Flowering spring–fall.
|habitat=Sandy beaches, river shores
|elevation=600-700 m
|distribution=Alta.;B.C.;Sask.;Idaho;Mass.;Oreg.;Wash.;Europe (Mediterranean region);sw;c Asia;n Africa;introduced in Australia.
|introduced=true
|discussion=<p>R. P. Rossbach’s (1940) report of <i>Spergularia diandra</i> from Georgia is referred to 9. <i>S. echinosperma</i>.</p><!--
--><p>The name <i>Spergularia diandra</i> was effectively and validly published via an autographic label distributed in 1851, predating the other commonly seen attributions of this combination.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Spergularia diandra
|authority=(Gussone) Heldreich
|rank=species
|parent rank=genus
|synonyms=Spergularia salsuginea
|basionyms=Arenaria diandra
|family=Caryophyllaceae
|phenology=Flowering spring–fall.
|habitat=Sandy beaches, river shores
|elevation=600-700 m
|distribution=Alta.;B.C.;Sask.;Idaho;Mass.;Oreg.;Wash.;Europe (Mediterranean region);sw;c Asia;n Africa;introduced in Australia.
|introduced=true
|reference=None
|publication title=Pl. Atticae
|publication year=1851
|special status=Introduced
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V5/V5_26.xml
|subfamily=Caryophyllaceae subfam. Polycarpoideae
|genus=Spergularia
|species=Spergularia diandra
}}<!--

-->[[Category:Treatment]][[Category:Spergularia]]