A morphological study of some members of the genus Pallavicinia . ers have two spiral bands. The one figured, whichmeasured 150^1 in length, was somewhat shorter than the majority ofthem. The mature sporophyte of P. radiculosa differs from that of in its shorter seta, which, according to Schiffner [1], is only15-20 mm. in length. The capsule, however, is much longer than in , but almost perfectly cylindrical in form, scarcely exceedingin width the seta (Fig. 23, D). As already stated, also, the apex isconspicuously pointed. It opens in the same way, by four narrow valv
A morphological study of some members of the genus Pallavicinia . ers have two spiral bands. The one figured, whichmeasured 150^1 in length, was somewhat shorter than the majority ofthem. The mature sporophyte of P. radiculosa differs from that of in its shorter seta, which, according to Schiffner [1], is only15-20 mm. in length. The capsule, however, is much longer than in , but almost perfectly cylindrical in form, scarcely exceedingin width the seta (Fig. 23, D). As already stated, also, the apex isconspicuously pointed. It opens in the same way, by four narrow valves,united at the apex. Except at the pointed apex, the wall of the capsuleis composed of three layers of cells, of which the outer one has the cell-walls uniformly thickened, and dark colored. The markings on the ripespores form a network of delicate ridges, much like those in Fossom-bronia, but quite different from those found in Pallavicinia Zollingeri(Fig. 21, I, J). The ripe spores are 12-150. in diameter, and the elatersoften measure about 2250. in
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Keywords: ., bookauthorcampbelldouglashought, bookcentury1900, bookdecade1910
