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Taxonomy of Zea (Gramineae). II. Subspecific Categories in the Zea Mays Complex and a Generic Synopsis

Hugh H. Iltis and John F. Doebley
American Journal of Botany
Vol. 67, No. 6 (Jul., 1980), pp. 994-1004
Stable URL: http://www.jstor.org/stable/2442442
Page Count: 11
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Taxonomy of Zea (Gramineae). II. Subspecific Categories in the Zea Mays Complex and a Generic Synopsis
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Abstract

A compromise classification of the genus Zea, reflecting both phylogeny and practical needs, recognizes six taxa, as follows: Section Luxuriantes: Zea perennis, Zea diploperennis, Zea luxurians. Section Zea: Zea mays ssp. mexicana (Neo-volcanic Plateau), Zea mays ssp. parviglumis Iltis & Doebley ssp. n. var. parviglumis (Rio Balsas drainage, Pacific slope from Guerrero to Jalisco), Zea mexicana ssp. parviglumis var. huehuetenangensis Iltis & Doebley var. n. (Pacific slope, western Guatemala, Prov. Huehuetenango), Zea mays ssp. mays. The new subspecies is distinguished by smaller spikelets and rachis joints, the varieties by different habitats, blooming dates and their genetic behavior in relation to cultivated Zea mays. Zea mays ssp. mexicana is the ancestor of corn.

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