Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 411
its lobed fronds are found covering extensive surfacesof moist rock or soil, adhering by the radical (root) filamentswhich arise from their lower surface. At the period of fructi-fication, these fronds send-up stalks, which carry at their sum-mits either round sliield-Hke disks, or radiating bodies… … 388 MICROSCOPIC STEUCTUEE OF HIGHEE CEYPTOG-AMIA. afterwards give place to the sporangia or spore-cases.* Butbesides these, the frond usually bears upon its sui-face (as shoTvn in Tig. 128) anumber of little openbasket-shaped con-ceptacles/ whose na-ture and purposewill be presently ex-plained.—The…
Microscopy
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