BOTANY: CRYPT0GAMS. Pteridophyta

Botany :

By the law of mutually exclusive events, the distribution of a' when s' is known can be found by integrating the present p(a)p(cr)dadu over all o. Equation (9) is then in fact obtained, showing the consistency of the results given in these papers. Equation (9) is the answer to question'(A); and while the answer to question (A) has thus been shown to follow from the answer to question (B), the m...

Introduction Botany

(Pp. viii + 479; figs. 121. 30s.) Edinburgh and London: E. & S. Livingstone, 1962. THE author originally hoped to provide a background of biological knowledge and at thd same time to interest the student in applications of botany to his life work, but claims only the first objective for this book. As far as medicine is concemed it is doubtful if botany has now any application except in so far a...

Palynological analysis of Sphaeropteris gardneri (Cyatheaceae, Pteridophyta).

The spore morphology and wall ultrastructure of Sphaeropteris gardneri (Hook.) R.M. Tryon from Brazil were analyzed with LM, SEM and TEM. The spores are trilete with an ornamentation formed of short low ridges with spines in their margins. The exospore is 2.5microm thick, two- layered in section and single or branched channels are present. The perispore is 1.2microm thick and two-layered. The i...

Systematic Botany

Systematic Botany