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A SEASONAL STUDY OF THE VEGETATIVE SHOOT APEX OF MYRIOPHYLLUM HETEROPHYLLUM
Author(s) -
England Wayne H.,
Tolbert Robert J.
Publication year - 1964
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1964.tb06642.x
Subject(s) - biology , apex (geometry) , meristem , botany , shoot , terminology , tunica , linguistics , philosophy
The seasonal study of the vegetative shoot apex and its direct derivatives in the dicotyledonous angiosperm Myriophyllum heterophyllum during the production of its 3 leaf types revealed a great similarity in the anatomy of the apex which produced them. The apex consisted of 2 tunica layers and a corpus that varied slightly. The corpus consisted of the corpus initials, the central rib meristem, and the inner layers of the flanking meristem. The work was compared with several works, but in particular with that of Vochting (1872). Vochting worked with another species, M. spicatum, using the terminology of the histogen concept. This work has verified many of Vochting's observations in the light of today's terminology and extends the range of seasonal shoot‐apical studies.