Spermatophytes (seed plants): Angiosperms (flowering plants): Monocots: Commelinids: Poales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Cyperus compressus
FAMILY
Cyperaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Poorland Flatsedge at Vascular Plants of North Carolina.
Occasionally mistaken for a member of subgenus Pycreus. The dark black, obviously trigonous achenes and mucronate scales distinguish it easily under a hand lens, per Weakley's Flora (2022)
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Cyperus compressus
FAMILY
Cyperaceae
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Cyperus compressus
SYNONYMOUS WITH Flora of North America north of Mexico, vol. 23 (2002)
Cyperus compressus
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 030-01-022:
Cyperus compressus FAMILY Cyperaceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Cyperus compressus
COMMON NAME:
Poorland Flatsedge
To see larger pictures, click or hover over the thumbnails.
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USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_cyco_001_lvd
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USDA-NRCS PLANTS Database / USDA Wetland flora: Field office illustrated guide pnd_cyco_003_lvd
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Keith Bradley kab_c_compressus_77325
September Miami-Dade County FL
Spikes 1-6, in subglobose clusters. Peduncles to 10cm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Keith Bradley kab_c_compressus_77325b
September Miami-Dade County FL
Spikelets digitate or subdigitate, broadly linear to slightly tetragonal, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Keith Bradley kab_c_compressus_77332
September Miami-Dade County FL
Leaf blades 1-2mm wide. Bracts 2-5,1-2mm wide, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Cyperus compressus
FAMILY
Cyperaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Cyperus compressus
FAMILY
Cyperaceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Cyperus compressus
SYNONYMOUS WITH
Flora of North America north of Mexico, vol. 23
Cyperus compressus
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 030-01-022:
Cyperus compressus
FAMILY
Cyperaceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Cyperus compressus
3961
Grass, Sedge, or Rush
Annual?
Habitat: Sandy fields, disturbed areas, per Weakley's Flora
Native to the Carolinas & Georgia
Common (rare in Mountains)
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
LEAVES:
Simple (basal leaves with sheaths and blades)
Basal & low alternate
FLOWER:
Summer/Fall
Superior ovary
Bisexual
FRUIT:
Summer/Fall
Nutlet
TO LEARN MORE about this plant, look it up in a good book!
If a search such as "Carex leptalea var. leptalea" doesn't deliver the results you want, try "Carex leptalea".
Or, to minimize chances of a misspelling, try just "Carex le".
Less is more: If "pencil flower" doesn't deliver the results you want, try "pencil".