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This illustration shows a common cultivated Selaginella: I, habit of the plant-s, strobili; b, a branch bearing roots, r. 1A, portion of the stem, showing leaf arrangement.

Selaginella

This illustration shows a common cultivated Selaginella: I, habit of the plant-s, strobili; b, a branch…

"Macrosporangium of Selaginella, containing four macrospores."—Finley, 1917

Macrosporangium of Selaginella

"Macrosporangium of Selaginella, containing four macrospores."—Finley, 1917