Native & Naturalized Plants of the Carolinas & Georgia


2947

Grass, Sedge, or Rush
Annual

Non-native: tropical southeast Asia

Documented growing wild in GA NC -

Uncommon (rare north of GA)

Look for it on disturbed ground, per Weakley's Flora

map
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INVASIVE

This plant is causing problems in natural areas outside its native range, according to authorities such as:

 

full sun ...Variable

LEAVES:
Simple

FLOWER:
Summer/Fall

FRUIT:
Summer/Fall
Grain

 

TO LEARN MORE about this plant, look it up in a good book!



Spermatophytes (seed plants): Angiosperms (flowering plants): Monocots: Commelinids: Poales

WEAKLEY'S FLORA (11/30/12):
Rottboellia cochinchinensis   FAMILY Poaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Rottboellia cochinchinensis   FAMILY Poaceae

SYNONYMOUS WITH Manual of the Grasses of the US (Hitchcock & Chase, 1950)
Rottboellia exaltata

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933)
Manisuris exaltata

 

COMMON NAME:
Itch-grass


Click or hover over the thumbnails to see larger pictures.

image of Rottboellia cochinchinensis, Itch-grass

Keith Bradley    kab_rottbo~1

May    Miami-Dade County    FL

Sheaths papillose-hispid [having stiff hairs on swollen nipple-like bases], per Manual of the Grasses of the United States.

image of Rottboellia cochinchinensis, Itch-grass

USDA APHIS PPQ Archive, USDA APHIS PPQ, Bugwood.org     bug_1149131

Month Unknown        

Leaf blades flat, in robust specimens to 3cm wide, per Manual of the Grasses of the United States.

image of Rottboellia cochinchinensis, Itch-grass

Julia Scher, Federal Noxious Weeds Disseminules, USDA APHIS ITP, Bugwood.org     bug_5376739

Month Unknown        

Spikelets awnless, in pairs at the nodes of a thickened articulate rachis, per Manual of the Grasses of the United States.

image of Rottboellia cochinchinensis, Itch-grass

Julia Scher, Federal Noxious Weeds Disseminules, USDA APHIS ITP, Bugwood.org     bug_5376740

Month Unknown