Sporongial distribution on the strobilli of Selaginella species
AbstractThe distribution of megasporangia and microsporangia in 8 strobili of one species of Sela gin ella subg. Selaginclla and two hundred and sixty seven strobili of 1.5 species of Selaginella subg. Sta chygynandrum was analyzed; the strobili were submited to the usual technir¡ue for clearing plant tissues without additional staining; four basic patterns were determin ed, which in general are coincident with the patterns proposed by Horner and Arnott. The analysis showed that two
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