Ipomoea fulvicaulis (Hochst. ex Choisy) Boiss. ex Hallier f. (Convolvulaceae), recently collected from Nandi hills of Karnataka state, is reported here as a new record for the flora of India. A detailed taxonomic account, including description, illustrations and photographs are provided to facilitate easy identification.
The black mildews from Mahabaleshwar are under exploration, among which two species of Asterinaceous fungi occurring on Syzygium spp. (Myrtaceae) are found to be new. These species, viz. Asterina myrtacearum sp. nov. and Lembosia mahabaleshwarensis sp. nov. are reported in this paper. The detail morphological description, colour photographs, line drawings and discussions are provided here for each species.
Ipomoea acanthocarpa (Choisy) Hochst. ex Schweinf. & Asch. an African species is reported for the first time from India. Ipomoea laxiflora H.J.Chowdhery & Debta hitherto recorded from North India, is reported for the first time from Peninsular India. Detailed description, illustrations, photographs and taxonomic notes for both the species are provided.
ABSTRACT
The present authors investigated petiolar anatomy of 12 species of the genus IxoraL. (Rubiaceae). The petioles (in T.S.) are horse shoe-shaped, planoconvex or circular in outline. They are usually winged and channeled adaxially. The extent of development of various tissues and their distribution, besides the cell inclusions, are observed. The vasculature is resolved into a conspicuous central arc, besides few other vascular bundles. The central arc is horse shoe-shaped, heart-shaped, circular, lunar or crescent shaped. The vascular arcs or bundles are capped abaxially by few sclerenchymatous layers, except few. The shapes of petiole, petiolar wings, features of epidermis, patterns of vascular supply and association of sclerenchyma with it, cell contents, etc. are thought systematically important. All these features are employed to prepare a key helping identification of the taxa investigated.
Two new black mildew fungal species, Asterina rubiacearum sp. nov. and Balladyna canthiigena sp. nov., which infect the leaves of Canthium dicoccum var. umbellatum (Rubiaceae) are described from Mahabaleshwar, Maharashtra (India). Taxonomic descriptions, photomicrographs, line drawings and comparative account of close associate species are provided.
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