OF THE CAROLINAS & GEORGIA

Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales

WEAKLEY'S FLORA (11/30/12):
Iva annua   FAMILY Asteraceae__   NEW! Click to go to FSUS key


INCLUDING PLANTS NATIONAL DATABASE:
Iva annua +   FAMILY Asteraceae__

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-01-003:
Iva annua   FAMILY Asteraceae__

 

COMMON NAME:
Sumpweed, Rough Marsh-elder, Annual Marsh-elder


         To see larger pictures, click or hover over the thumbnails.

image of Iva annua, Sumpweed, Rough Marsh-elder, Annual Marsh-elder

Eva Pratt    esp092212_photo_22

September        

Leaves opposite, ovate, coarsely serrate, pubescent on both surfaces, per Vascular Flora of the Carolinas.

image of Iva annua, Sumpweed, Rough Marsh-elder, Annual Marsh-elder

Richard and Teresa Ware    rtw_iva_annua_4

September        

Racemes 3-16cm long. Heads pendant, each head subtended by a foliaceous bract, per Vascular Flora of the Carolinas.

 

WEAKLEY'S FLORA (11/30/12):
Iva annua   FAMILY Asteraceae__

INCLUDING PLANTS NATIONAL DATABASE:
Iva annua +   FAMILY Asteraceae__

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-01-003:
Iva annua   FAMILY Asteraceae__

 

Find by SCIENTIFIC NAME:

3525

Forb
Annual

Native to Georgia

Habitat: Fields, especially bottomlands, disturbed places; in the eastern and inland part of area probably introduced (by native Americans) from farther west, per Weakley's Flora

map
NEW! Click here to see a map from Weakley's Flora of the Southeastern US showing range and abundance.

Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)

LEAVES:
Simple
Opposite

FLOWER:
Summer/Fall
Disc: Cream-colored/ Greenish-white
Rays: Absent or less than 3mm
Unisexual, in mixed heads
Staminate corollas distinctly 5-lobed
5 stamens in staminate flowers
Inferior ovary

FRUIT:
Summer/Fall
Blackish-brown
Achene

 

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



 


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