The structure & development of the mosses and ferns (Archegoniatae) . longitudinal section of the thallusshowing the dorsal origin of the female receptacle ( 9 ) ; v,the growing point (diagram after Leitgeb); B, Rebouliahemis//ujrica (KdiAA.), longitudinal section of very youngreceptacle with the first archegonium (9 )! -Il the apicalcell, X 300 (after Leitgeb). The next typeis that which Leitgeb^ attributes to Grinialdia, Reboulia,Fimbriarta, and some others, but it is not the type foundin Fimbriaria Californica. In this type the structure ofthe receptacle and the origin of the archegonia are
The structure & development of the mosses and ferns (Archegoniatae) . longitudinal section of the thallusshowing the dorsal origin of the female receptacle ( 9 ) ; v,the growing point (diagram after Leitgeb); B, Rebouliahemis//ujrica (KdiAA.), longitudinal section of very youngreceptacle with the first archegonium (9 )! -Il the apicalcell, X 300 (after Leitgeb). The next typeis that which Leitgeb^ attributes to Grinialdia, Reboulia,Fimbriarta, and some others, but it is not the type foundin Fimbriaria Californica. In this type the structure ofthe receptacle and the origin of the archegonia are the sameas in that just described ; but here the growing point ofthe branch forms the forward margin of the receptacle,and the stalk is a direct continuation of the axis of the ^ The sporogonial receptacle of the Marchantieje is sometimes known as theCarpocephaUnn. - Leitgeb (7), vol. vi. p. 29. ^ Leitgeb, p. 30. 56 MOSSES AND FERNS CHAP. branch. Upon its ventral surface it shows a furrow in whichroot-hairs are produced in great numbers, and this furrow A.
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Keywords: ., bookcentury1800, bookdecade1890, bookidstructuredev, bookyear1895
