Pollen morphology of the Araceae from China

WANG Wei, ZHAO Nan-Xian

Abstract:

Pollen morphology in 28 species of 22 genera in the Araceae and two species in the Ac-

oraceae, all from China except Arum maculatum, has been investigated under scanning electron mi-

croscope. Pollen grains in the Araceae are morphologically highly variable among the genera. They

are spherical, subspherical, ellipsoidal, oblate or olive-shaped in shape. The apertures are panto-

porate, tenuate, zonate or inaperturate. The exine ornamentation is foveolate, reticulate, ribbed,

striate, verrucate, echinate or psilate. Based on the results, some taxonomic problems in the Arace-

ae, particularly the intergeneric relationships among Rhaphidophora, Epiprermnum and Monstera,

and the infrageneric classification within Typhonium, are discussed. Palynological data seem to sup-

port the treatment of Rhaphidophora, Epipremnum and Monstera as three independent genera.

Key words: Araceae, Pollen morphology, Scanning electron microscope

WANG Wei, ZHAO Nan-Xian. Pollen morphology of the Araceae from China[J]. , 2002, 40(6): 517-529.

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