Common names: lanceleaf ragweed, southern ragweed, ragweed

Scientific names: Ambrosia bidentata

Seasons of significant use: spring, summer (for Ambrosia spp. complex)

Characteristics: Native, annual, warm season forb to 3.5 feet (mostly less than 2.5 feet in our area). Stems erect; leaves mostly alternate, simple, sessile, with a broad basal tooth on each side (with the appearance of an arrowhead); plant monoecious; staminate flowers in dense spicate aggregations; pistillate flowers nearly hidden in leaf axils that subtend the male inflorescences. Flowers August-October.

Plant community type: Primarily in open upland, but sometimes in open bottomland.

More Plant Photos and Descriptions:
Appendix C: Plants by Common Name
Appendix C: Plants by Scientific Name
Appendix C: Plants Listed by Family