
TY  - JOUR
A1  - Barnard, C 
T1  - Floral histogenesis in the monocotyledons.  III. The Juncaceae
JF  - Australian Journal of Botany
JO  - Aust. J. Bot.
Y1  - 1958
VL  - 6
IS  - 4
SP  - 285
EP  - 298
KW  - 
UR  - https://doi.org/10.1071/BT9580285 
N2  - An account is presented of floral histogenesis in Luzula campestris (L.) DC., Juncus articulatus L., and Juncus vaginatus R. Br. The pattern of floral histogenesis in these species is similar to that in species of the Gramineae and Cyperaceae. Bracts, bracteoles, perianth members, and carpellary tissue arise by divisions of cells of the tunica. Periclinal divisions in the outer tunica layer (dermatogen) always occur in the initiation of these "foliar" type organs. The primordia of inflorescence branches, flower primordia, and stamens, on the other hand, arise as a result of cell division in the outer layers of the corpus and the inner layer of the tunica. Periclinal divisions in the dermatogen are not involved in the differentiation of these "cauline" type structures. The morphological nature of the placentas in Juncus is discussed; they appear to arise independently of the carpellary tissue and after the manner of "cauline" structures. The ovules in both Luzula and Juncus arise in similar fashion. 
ER  -

