View source for Cyperus drummondii

{{Treatment/ID
|accepted_name=Cyperus drummondii
|accepted_authority=Torrey & Hooker
|publications={{Treatment/Publication
|title=Ann. Lyceum Nat. Hist. New York
|place=3: 437, errata. 1836
|year=1836
}}
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Cyperus robustus
|authority=Kunth
|rank=species
}} {{Treatment/ID/Synonym
|name=Cyperus virens subsp. drummondii
|authority=(Torrey & Hooker) T. Koyama
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Cyperus virens var. drummondii
|authority=(Torrey & Hooker) Kükenthal
|rank=variety
}} {{Treatment/ID/Synonym
|name=Cyperus virens var. robustus
|authority=(Kunth) Kükenthal
|rank=variety
}}
|hierarchy=Cyperaceae;Cyperus;Cyperus subg. Pycnostachys;Cyperus drummondii
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Cyperaceae]]</div><div class="higher-taxon"><small>genus</small>[[Cyperus]]</div><div class="higher-taxon"><small>subgenus</small>[[Cyperus subg. Pycnostachys]]</div><div class="higher-taxon"><small>species</small>[[Cyperus drummondii]]</div></div>
|volume=Volume 23
|mention_page=page 154
|treatment_page=
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Herbs,</b> perennial, cespitose; rhizomes 0.5–2 cm, often absent. <b>Culms</b> trigonous, 35–170 cm × 2–4.7 mm, scabrid on angles. <b>Leaves</b> 4–12, with readily visible cross ribs especially on abaxial surface, flat to V-shaped, 25–100 cm × 2.4–11 mm. <b>Inflorescences</b>: heads digitate, globose, 1–1.7 cm diam.; rays 3–5, 1–7 cm; 2d order rays absent; bracts 3–5, horizontal to ascending at 30°, with prominent cross ribs, V-shaped, (4–)11–35(–48) cm × 1–6.7 mm (longest 1/2 as long as culm); 2d order bracts absent. <b>Spikelets</b> 10–40, oblong to linear-lanceoloid, 5–1.8 × 1.5–2.2 mm; floral scales 18–42, pale grayish green, turning brownish, proximally greenish or brownish, 2-keeled, weakly to distinctly 1-ribbed, proximal 1/2 2-ribbed, ovate, 1.4–1.6 × 0.9–1.4 mm, acute (sometimes mucronulate), apically glabrous, occasionally scabridulous. <b>Flowers</b>: stamens 1–2; anthers 0.8–1.2 mm; styles 0.8–1 mm; stigmas 0.6–0.8 mm. <b>Achenes</b> brown, slightly stipitate, oblong-ellipsoid (2.4–3.9 times longer than wide), 1–1.2 × 0.3–0.5 mm, apical beak 0.1–0.5 mm, surfaces glabrous.</span><!--

-->{{Treatment/Body
|phenology=Fruiting late spring–summer.
|habitat=Wet, relatively undisturbed habitats, especially flatwoods, ponds, seepage slopes, coastal prairies
|elevation=0–200 m
|distribution=Ala.;Fla.;Ga.;La.;Miss.;S.C.;Tex.;West Indies;Central America;South America.
|discussion=<p><i>Cyperus drummondii</i> has been treated as a synonym (G. C. Tucker 1994), or a variety (G. Kükenthal 1935–1936), or a subspecies of <i>C. virens</i> (M. F. Denton 1978b). Recent quantitative and field studies (J. R. Carter et al. 1999) provided compelling evidence that specific status is appropriate.</p><!--
--><p>Compared to <i>Cyperus virens</i>, <i>C. drummondii</i> is a taller species of less disturbed habitats and has narrower spikelets, ovate scales, and fewer inflorescence bracts. <i>Cyperus virens</i> and <i>C. drummondii</i> are readily distinguished from other <i>Cyperus</i> species in the United States by their sharply angled, scabrid culms and conspicuously septate leaf blades.</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Cyperus drummondii
|authority=Torrey & Hooker
|rank=species
|parent rank=subgenus
|synonyms=Cyperus robustus;Cyperus virens subsp. drummondii;Cyperus virens var. drummondii;Cyperus virens var. robustus
|basionyms=
|family=Cyperaceae
|phenology=Fruiting late spring–summer.
|habitat=Wet, relatively undisturbed habitats, especially flatwoods, ponds, seepage slopes, coastal prairies
|elevation=0–200 m
|distribution=Ala.;Fla.;Ga.;La.;Miss.;S.C.;Tex.;West Indies;Central America;South America.
|reference=None
|publication title=Ann. Lyceum Nat. Hist. New York
|publication year=1836
|special status=Illustrated
|source xml=https://bibilujan@bitbucket.org/aafc-mbb/fna-data-curation.git/src/bb6b7e3a7de7d3b7888a1ad48c7fd8f5c722d8d6/coarse_grained_fna_xml/V23/V23_237.xml
|genus=Cyperus
|subgenus=Cyperus subg. Pycnostachys
|species=Cyperus drummondii
}}<!--

-->[[Category:Treatment]][[Category:Cyperus subg. Pycnostachys]]