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Revision as of 20:01, 24 September 2019

Plants usually annual, usually monoecious. Leaves with Kranz anatomy. Staminate flowers with calyx lobes not crested. Pistillate flowers lacking or rarely with a perianth (in A. covillei), enclosed by a pair of bracteoles. Bracteoles cuneate to ovate or obovate, united at least to 1/2 of length, faces with tubercles or crests or smooth. Seeds: radicle lateral or superior.

Distribution

United States, Mexico.

Discussion

Species 28 (23 in the flora).

Selected References

None.