The angiosperms have been classified into dicotyledons and monocotyledons based on the number of cotyledons, leaf venation, arrangement of vascular bundles etc. The monocotyledons have one cotyledon, leaves usually with parallel venation, vascular bundles scattered and the floral parts usually in threes. In India monocotyledons are represented by 674 genera and 4081 species under 42 families (Karthikeyan et al. 1989). In Uttar Pradesh the number of genera and species approximately is 365 and 1265 respectively under 35 families.
ABOUT THE AUTHOR B.P. Uniyal
Sri B.P. Uniyal is a retired Botanist and worked with the Botanical Survey of India in different capacities. He joined the department inApril 1964 at Northern circle. Dehradun and also worked at Eastern circle, Shillong and Central National Herbarium, Howrah for brief periods. During his active service he explored parts of Jammu & Kashmir, Himachal Pradesh, Delhi and Uttaranchal and collected thousands of specimens. He also participated in the Panchachuli Multi-Dimensional expeditioin organized by the Army in 1998. He is author of 11 books and co-editor of three volumes of Flora of India. He has also published abkut 40 research papers in different Indian and foreign scientific journals.
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