Volume 74, Issue 6
December 1971, pages 269-318
pp 269-276 December 1971
Three new species of Pezizales from Himalayas are fully described here. These areAleuria dalhousiensis, Octospora gigantea andPlicaria himalayensis.
pp 277-283 December 1971
pp 284-292 December 1971
Morphology of the sporophyte ofSphaerostephanos subtruncata (Bory) Holttum, the only species of the genus occurring in India, is described. It is found chiefly in the Western Ghats of S. India. The genusSphaerostephanos shows similarity in many features withCyclosorus, but differs in possessing antrorse, acicular, multicellular hairs on the costae and in the absence of unicellular, papillate hairs, which are common inCyclosorus either on the paleae or on the surface of the rhizome.
pp 293-300 December 1971
Forty-five cultures of acetic acid bacteria were isolated from different ecosystems including fruits, vegetables, flowers, vinegars, etc. On the basis of morphological, physiological and biochemical characteristics they were identified asA. aceti, A. xylinum, A. suboxydans, A. melanogenum andBacterium xylinoides. It was obvious thatA. aceti andA. xylinum were prevalent in fruits, vinegars and cane juice whileA. rancens was to be found in flowers and vegetables. Grapes seem to be a fine source for isolation of common species.
Alcohol tolerance and ability to oxidize alcohol to acetic acid showed thatA. aceti andA. xylinum possess higher alcohol tolerance and produce more acetic acid than the other species.
pp 301-306 December 1971
Two new species of the genusMonocercomonas Grassi 1879 are described from the Indian birds. A complete morphological description and a detailed discussion regarding the specific identity of the species described is given.
pp 307-313 December 1971
The present paper deals with the description of two new species ofChilomastix, C. osmaniae n. sp. andC. graecae n. sp. collected from the Indian birds. These two species differ markedly in their structure from the hitherto known species. A detailed morphological description of these and a discussion on the specific identity is given.
pp 314-318 December 1971
The structure and development of pericarp and seed coat inRotula aquatica Lour. have been described.
The fruit is an ellipsoidal drupe with four pyrenes. The pericarp is divisible into an inner hard and stony endocarp, a pulpy mesocarp and a thin-walled epicarp. The seeds are curved and the seed coat is poorly developed. All the cells of the integument excepting those of the epidermis break down during development. The epidermal cells develop thickenings on their inner tangential and radial walls at later stages. The endocarp forms a hard shell around the seeds and therefore the seeds are not released from the fruit.