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SORAL AND PINNULE ONTOGENY IN GLEICHENIA LINEARIS
Author(s) -
Bierhorst David W.
Publication year - 1971
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.1537-2197.1971.tb09991.x
Subject(s) - receptacle , biology , anatomy , apex (geometry) , ontogeny , meristem , botany , genetics , shoot
The margin of the pinnule in G. linearis becomes determined early in ontogeny. The bulk of the lamina is derived from an intercalary meristematic band between the margin and the midvein. The sporangiferous receptacle possesses a pronounced tetrahedral apical cell and has over‐all organization comparable to the apex of an axial entity. The receptacle is traceable to the marginal series just lateral to the apical cell of the pinnule. The receptacle is described as neither marginal nor superficial in origin, but apical, and it is interpreted as a branch of the pinnule.