Cyperus thyrsiflorus Junghuhn. Southern Flatsedge. Phen: May-Sep. Hab: Calcareous woodlands/hammocks, swamp edges, and shell middens. Dist: E. SC south to s. FL, west to se. TX; West Indies; Mexico to South America.
ID notes: C. pseudothyrsiflorus is sometimes confused with this species. C. pseudothyrsiflorus is a more robust plant, with mucronate scales, maturing reddish-brown (vs. pale olivaceous); see Key ZD. C. tenuis, a Central American species, has been reported from southern Texas, probably based on material of this species; it has much denser ovoid (vs. oblong-cylindric, parallel-sided) spikes, slightly flattened spikelets, and greenish scales overlapping at least 1/4-1/3 of the next distal scale.
Origin/Endemic status: Native
Synonymy ⓘ: = ETx1, FNA23, K1, K3, K4, Mex, WH3, Carter & Jones (1997); = Cyperus hermaphroditus (Jacq.) Standl. – S, misapplied; = n/a – RAB
Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: FAC
- Great Plains: FAC
Heliophily ⓘ: 6
Hover over a shape, letter, icon, or arrow on the map for definition or see the legend.
© Jake Smith, some rights reserved (CC BY-NC), uploaded by Jake Smith source CC-BY-NC, permission granted to NCBG | Original Image ⭷
© Jake Smith, some rights reserved (CC BY-NC), uploaded by Jake Smith source CC-BY-NC, permission granted to NCBG | Original Image ⭷
© Jake Smith, some rights reserved (CC BY-NC), uploaded by Jake Smith source CC-BY-NC, permission granted to NCBG | Original Image ⭷Feedback
See something wrong or missing on about Cyperus thyrsiflorus? Let us know here: (Please include your name and email if at all complicated so we can clarify if needed.) We greatly appreciate feedback, and will include updates from you in our next webapp update, which can take a few months.
« show previous | back to original search ↑ | show next »
Cite as...