Volume 80, Issue 6
December 1974, pages 253-306
pp 253-261 December 1974
The floral anatomy ofEnsete superbum is described in detail. Anatomical and ontogenetical evidence has been discussed in regard to the appendicular nature of the inferior ovary. The extension of the carpellary ventrals into the style is an important anatomical feature. The condition of the nectary is discussed. Anatomical evidence supports Schumann’s interpretation of the perianth. Reduction of the androecium marks a significant deviation from the rest of the studied families of the Scitamineae except the Strelitziaceae in that the posterior member of the inner staminal whorl is aborted.
pp 262-266 December 1974
pp 267-274 December 1974
The influence of 2-thiouracil, GA, and 2,4-D on the flowering behaviour of chrysanthemum stunt virus-infected plants of chrysanthemum cultivar “Evening star” was studied. 2-Thiouracil did not modify the effect considerably. GA had a noticeable effect on a number of flowers and their longevity which was decreased due to virus. 2,4-D had encourageable influence on the number, size and longevity of flowers deteriorated by the virus.
pp 275-280 December 1974
Three new species of Pezizales,Boudiera parvispora from Darjeeling,Cheilymenia simlensis from Simla andC. chandigarhii from Chandigarh, are described.
pp 281-290 December 1974
Temporary pools serve as a habitat for a large number of aquatic insects. Light trap experiments conducted show that Hemipterans are more predominant than coleopterans. Of these two orders, Hemipterans represented by single genus appear in large numbers. Further, there appears to be a definite periodicity with regard to the dispersal of these insects.
pp 291-300 December 1974
In the genusMemecylon, one of the main anatomical features of taxonomic significance is the presence of terminal sclereids throughout the leaf expanse. The present study has suggested the utility of sclereid typology in the problems of synonymy in the systematic treatment ofMemecylon.
pp 301-306 December 1974
A new species,Cassia intermedia Sharma, Vivek. & Rathak. is described and illustrated. The natural interspecific hybridisation betweenC. occidentalis Linn. andC. hirsuta Linn. has resulted in the evolution of the new species. This finding has been corroborated by external morphological features and the phytochemical analysis.