A New American Species of Bowmanites
- 1 December 1951
- journal article
- research article
- Published by University of Chicago Press in Botanical Gazette
- Vol. 113 (2) , 158-165
- https://doi.org/10.1086/335704
Abstract
A well-preserved cone, B. bifurcatus, descr. from the McLeansboro group (upper Penn-sylvanian) of Berryville, Illinois. The small, homosporous cone is about 3 mm. in diam., and consists of 17 whorls of appendages. Each whorl consists of 6 bracts, above which are borne 6 pairs of sporangia, each attached at its distal end to a recurved forking sporangiophore. The vascular system of the axis is a small triarch structure. The epidermal cell walls of the bracts are strongly sinuous, and those of the sporangia slightly so. The spores are monolete and smooth-walled.This publication has 1 reference indexed in Scilit:
- A Heterosporous Species of Bowmanites from the Michigan Coal BasinAmerican Journal of Botany, 1944