A. Henfrey on the Higher Cryptogamous Plants. 381 
it becomes divided into two by a horizontal partition, the upper>* 
pert in some of the detail points. According to this author, the 
lower part of the pistillidium (the germen of Dr. Brown) begins 
to swell at a certain time, when a capsule is to be produced, be- 
coming filled with a quantity of what he terms “green granula- 
tions.” As soon as the thickness has become about that of the 
future seta, the cell-development in the horizontal direction ceases, 
and its activity is directed chiefly to the upper part, which begins 
to elongate rapidly in the direction of the main axis. ‘This elon- 
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of the cell-membrane enveloping t 
part is carried onwards as the calyptra; the lower part when any 
is left, remains as a little tubular process surrounding the seta. 
While the young fruit is being raised up by the growth of the 
Seta, the portion of the receptacle upon which the pistillidiam is 
borne, becomes developed inte a kind of collar, and at length into 
a sheath (the vaginula) surrounding the base of the seta which is 
a 
atticulated into it there. 
* Linnean Transactions, vol. xii. 
+ Recherches Anatomiques et Morphologiques sur les Mousses. Strasbourg, 1848. 
Szoonp Szrizs, Vol. XIV, No. 42.—Nov., 1862. 49 
