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Digital Herbaria

Iva annua

Iva annua L.

Annual Marshelder, Marshelder, Sumpweed, Annual Marsh Elder, Marsh Elder

Asteraceae (Aster Family)

USDA Symbol: IVAN2
USDA Native Status: L48 (N)

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Specimen & Label Data

Iva annua



Location: NE of low water crossing of Salado Creek by the road from main base of Fort Sam Houston to the Pershing Firing Range, San Antonio.
Latitude: 0.000000

Habitat: Full sun. Damp, alluvial soil, often flooded.

Description: Taprooted annual, 4 dm tall, or more, Leaves opposite, to 12 cm long; ovate, becoming lacerate above, reduced in head bearing region to bracts. Heads in speciform arrangement (terminal). Phyllaries 3-4, free, cuneate, terminally rounded.

County: Bexar
Collector: Harry Cliffe
Collection Date: Oct 6, 1994
Specimen number: 686

Herbarium Owner: NPSOT
Herbarium ID: 1112
Accession Date: Feb 28, 1998
Accession Number: 104

Annotations: SCXRB (In flower)

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