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Cyperaceae taxon details

Rhynchospora compressa J.Carey ex Chapm.

1679538  (urn:lsid:marinespecies.org:taxname:1679538)

accepted
Species
terrestrial
Chapman, A. W. (1860). Flora of the Southern United States; Containing Abridged Descriptions of the Flowering Plants and Ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi and Florida: Arranged According to the Natural System. , available online at https://www.biodiversitylibrary.org/page/7405705#page/7/mode/1up
page(s): 525 [details] 
Description Plants perennial, cespitose, 70–100(–150) cm; rhizomes absent. Culms erect to ascending, leafiest at base, triangular,...  
Description Plants perennial, cespitose, 70–100(–150) cm; rhizomes absent. Culms erect to ascending, leafiest at base, triangular, slender, somewhat stiff. Leaves exceeded by culm; basal blades crowded, spreadingexcurved, distal ascending, linear, proximally flat, 3–5 mm wide, apex trigonous, shortsubulate. Inflorescences: spikelet clusters 3–5, compact, the proximalmost widely spaced, turbinate or lobed to hemispheric; leafy bracts setaceous, mostly overtopping clusters. Spikelets redbrown, broadly ovoid, 3–3.5(–4) mm, apex acuminate; fertile scales broadly ovate to ± orbiculate, 2–2.5(–3) mm, apex rounded to notched, midrib included or shortexcurrent. Flowers: perianth bristles 6, reaching from fruit midbody to tubercle, antrorsely barbellate. Fruits 1–2 per spikelet, (2–)2.5–2.8(–3) mm; body brownish, broadly obovoid to nearly orbicular, 1.5–2 × 1.5–2 mm; surfaces strongly transversely wavyrugose, intervals rows of vertical, rectangular alveolae; tubercle conic-subulate, basal rim flaring above short neck on achene. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Fl. South. U.S. 525 1860 to Fl. South. U.S. : 525 (1860), information...  
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Fl. South. U.S. 525 1860 to Fl. South. U.S. : 525 (1860), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Rhynchospora compressa J.Carey ex Chapm.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1679538 on 2025-09-14
Date
action
by
2023-09-06 07:35:01Z
created
2024-12-10 11:47:54Z
unchecked
db_admin
2025-09-02 07:51:11Z
checked

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Nomenclature

original description Chapman, A. W. (1860). Flora of the Southern United States; Containing Abridged Descriptions of the Flowering Plants and Ferns of Tennessee, North and South Carolina, Georgia, Alabama, Mississippi and Florida: Arranged According to the Natural System. , available online at https://www.biodiversitylibrary.org/page/7405705#page/7/mode/1up
page(s): 525 [details] 

basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details] 

 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

From editor or global species database
Description Plants perennial, cespitose, 70–100(–150) cm; rhizomes absent. Culms erect to ascending, leafiest at base, triangular, slender, somewhat stiff. Leaves exceeded by culm; basal blades crowded, spreadingexcurved, distal ascending, linear, proximally flat, 3–5 mm wide, apex trigonous, shortsubulate. Inflorescences: spikelet clusters 3–5, compact, the proximalmost widely spaced, turbinate or lobed to hemispheric; leafy bracts setaceous, mostly overtopping clusters. Spikelets redbrown, broadly ovoid, 3–3.5(–4) mm, apex acuminate; fertile scales broadly ovate to ± orbiculate, 2–2.5(–3) mm, apex rounded to notched, midrib included or shortexcurrent. Flowers: perianth bristles 6, reaching from fruit midbody to tubercle, antrorsely barbellate. Fruits 1–2 per spikelet, (2–)2.5–2.8(–3) mm; body brownish, broadly obovoid to nearly orbicular, 1.5–2 × 1.5–2 mm; surfaces strongly transversely wavyrugose, intervals rows of vertical, rectangular alveolae; tubercle conic-subulate, basal rim flaring above short neck on achene. [details]

Taxonomic remark Source in seed data: wcs Update namepublishedIn from Fl. South. U.S. 525 1860 to Fl. South. U.S. : 525 (1860), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]