Fig.1.9. Psilotum nudum. A, dehisced sporangium; B, single spore; C, spore in optical section.

Fig.1.9. Psilotum nudum. A, dehisced sporangium; B, single spore; C, spore in optical section.

Fig.1.9. Psilotum nudum. A, dehisced sporangium; B, single spore; C, spore in optical section.

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