. Text-book of botany, morphological and physiological. Botany. 348 MUSCINEJE. leaves and lateral shoots, since Leitgeb's researches show that great morphological differences occur in the different genera. For the same reason very little of a general character can be said, in addition to what has been mentioned above, on the habit and anatomical nature of the vegetative body, which must therefore be considered under the separate families. The Asexual Propagation of Hepaticae is often brought about by the dying off of the thallus or stem from behind, the branches thus losing their connexion and
. Text-book of botany, morphological and physiological. Botany. 348 MUSCINEJE. leaves and lateral shoots, since Leitgeb's researches show that great morphological differences occur in the different genera. For the same reason very little of a general character can be said, in addition to what has been mentioned above, on the habit and anatomical nature of the vegetative body, which must therefore be considered under the separate families. The Asexual Propagation of Hepaticae is often brought about by the dying off of the thallus or stem from behind, the branches thus losing their connexion and becoming independent. Adventitious branches, arising in the thalloid forms from cells of the older marginal parts, become detached in a similar manner. The propagation by gemmce is very common and characteristic; not unfrequently a number of cells of the margin of the leaf of foliose Jungermannieae { in Mado- thecd) simply detach themselves as gemmae; in Blasia, on the other hand, as well as in Marchaniia and Lunularia, peculiar cupules are formed on the upper side of the flat shoots exposed to the light, which are flask-shaped in Blasia, broadly cup-shaped. FlG. 233,—Marc/iantza polymorpha ; A, B young shoots; C the two shoots which result from a gemma, with cupules; v v the depressed apical region: D a piece of the epidermis seen from above: sp stomata on the rhomboid plates {A—C X slightly; D more strongly).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Sachs, Julius, 1832-1897; Vines, Sydney Howard, 1849-1934. ed. and tr. Oxford, Clarendon press
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbotany, bookyear1882
