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In the tropics as many as onethird of the ferns of an area may grow as epiphytes,
or air plants, on the shaded lower trunks or in the crowns of trees, often on
exposed boughs. A number of so-called epiphytic ferns are actually climbers that
Among homosporous ferns, exceptions to the rule of high chromosome numbers
are rare; in one species of filmy fern (Hymenophyllum peltatum) x = 11, the lowest
number reported. Among heterosporous ferns, however, the situation is ...
Subfamily Lygodioideae (climbing ferns). Leaves climbing by their twisting
rachises (central axes); sporangial apical plate of a single cell ordinarily;
sporangia attached laterally in two rows, produced on specialized lobes of the
blade; spores ...
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review