Log In
New Account
Sitemap
Home
Specimen Search
Search Collections
Map Search
Exsiccati Search
Images
Image Library
Search Images
Inventories
State Floras
Kentucky Flora
Dynamic Tools
Dynamic Checklist
Dynamic Key
Cyperus thyrsiflorus
Jungh.
Family:
Cyperaceae
Southern Flat Sedge
[
Cyperus pallens
(Liebm.) Standl. & Steyerm.,
more
Mariscus pallens
,
Mariscus tribrachiatus
]
FNA
Resources
Gordon C. Tucker*, Brian G. Marcks* & J. Richard Carter * in Flora of North America (vol. 23)
Herbs, perennial, rhizomatous. Culms trigonous, (15-) 20-40(-65) cm × 0.5-1 mm, glabrous. Leaves V-shaped, (10-)20-40 cm × 0.8-2.8(-3) mm, glabrous. Inflorescences: spike 1, densely oblong-cylindric, (15-)25-35(-40) × 12-18(-22) mm, (spikelets loosely spaced, 7-9 per 5 mm of rachis); rays (5-)6-8(-11), 0.5-4(-7.5) cm; bracts (4-)5-7(-8), ascending at 30º, (4-)10-30(-35) cm × (1-)2-4(-7) mm; rachilla deciduous, wings persistent, 0.4-0.5 mm wide. Spikelets (20-)40-80(-100), linear, ± cylindric, scarcely compressed, (4.5-)6-9(-11) × (0.5-) 0.6-0.7(-1) mm; floral scales persistent, (1-)2-3(-4), appressed, medially green, laterally light brown to tawny or bronze, medially (1-)3-ribbed, laterally 3-ribbed, oblong, (2.6-)2.8-3.2(-3.4) × (1-)1.2(-1.4) mm, apex acute, mucronulate, mucro to 0.1(-0.2) mm. Flowers: anthers 0.6-0.8 mm; styles (0.4-)0.6-1(-1.2) mm; stigmas persistent on achenes, prominently exserted from floral scales, (1.5-)2-3(-4) mm. Achenes brown to reddish brown, stipitate, narrowly oblong, 1.8-2.1 × (0.4-)0.5(-0.7) mm, stipe 0.1-0.2 × 0.1-0.2 mm, apex apiculate, acute, surfaces puncticulate.
Fruiting summer. Dry, open woods; 0-200 m; Ala., Fla., Ga., La., Tex.; Mexico; West Indies; South America.
Open Interactive Map
Click to Display
100 Initial Images
- - - - -
View All Images
This project made possible by
National Science Foundation Award 1410069
Powered by
Symbiota
.