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THE NATURAL AFFINITY OF THE CARBONIFEROUS SEED, CALLOSPERMARION
Author(s) -
Stidd Benton M.,
Hall John W.
Publication year - 1970
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.1537-2197.1970.tb09878.x
Subject(s) - biology , pollen , botany , stalk , integument , carboniferous , fern , ovule , horticulture , paleontology , structural basin
A seed of Callospermarion pusillum has been found attached to a long slender stalk. Significant features of the seed based upon additional specimens are described. Secretory cavities in the integument are similar to those in the stem of Callistophyton poroxyloides and the fertile foliage bearing the pollen organ Callandrium callistophytoides. Vesicaspora sp . pollen similar to that found in Callandrium , occurs in the pollen chamber. Callistophyton, Callandrium , and Callospermarion are considered to represent the detached organs of a new seed fern family, Callistophytaceae.