. Compositae newsletter. Compositae. 26 20/21. 1992 Skvarla, J. and Turner 1966a. Systematic implications from electron mic- roscopic studies of Compositae pollen - A Review. Ann. Missouri Bot. Card. 53(2): 220-239. Skvarla, J. and Turner 1966b. Pollen wall ultrastructure and its bearing on the systematic position of Blennosperma and Crocidium (Compositae). Amer. J. Bot. 53(6): 555-563. Skvarla, J., Turner, , Patel, and Tomb 1977. Pollen morphology in the Compositae and in morphologically related families. In: Heywood, , Harbome, and Turner (ed
. Compositae newsletter. Compositae. 26 20/21. 1992 Skvarla, J. and Turner 1966a. Systematic implications from electron mic- roscopic studies of Compositae pollen - A Review. Ann. Missouri Bot. Card. 53(2): 220-239. Skvarla, J. and Turner 1966b. Pollen wall ultrastructure and its bearing on the systematic position of Blennosperma and Crocidium (Compositae). Amer. J. Bot. 53(6): 555-563. Skvarla, J., Turner, , Patel, and Tomb 1977. Pollen morphology in the Compositae and in morphologically related families. In: Heywood, , Harbome, and Turner (eds.), The Biology and Chemistry of the Compositae, 141-248. New YorkA-ondon: Academic Press. Stix, E. 1960. PoUenmorphologische Untersuchungen an Compositae. Grana pa- /yn. 2 Fig. L Scanning clccU-on micrograph of a pollen grain of S. steudelii showing colpus with lalongate ora, short spines without perforations at the base, and subprolate pollen. Magnification x Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Naturhistoriska riksmuseet (Sweden). Dept. of Phanerogamic Botany. Columbus, Ohio : Dept. of Botany, Ohio State University
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