REFERENCES CITED
- Billings, W. D., 1973: Arctic and alpine vegetations: Similarities, differences and susceptibility to disturbance. Bioscience, 23: 697–704.
- Billings, W. D. and Mooney, H. A., 1968: The ecology of arctic and alpine plants. Biological Reviews, 43: 481–529.
- Bliss, L. C., 1966: Plant productivity in alpine microenvironments on Mount Washington, New Hampshire. Ecological Monographs, 36: 125–155.
- Chabot, B. F. and Billings, W. D., 1972: Origins and ecology of the Sierran alpine flora and vegetation. Ecological Monographs, 42: 163–199.
- Champion, H. G. and Seth, S. K., 1968: A Revised Survey of the Forest Types of India. Delhi: Manager of Publications, Government of India. 404 pp.
- Jackson, L. E. and Bliss, L. C., 1982: Distribution of ephemeral herbaceous plants near treeline in the Sierra Nevada, California, U.S.A. Arctic and Alpine Research, 14: 33–42.
- Klikoff, L. G., 1965: Microenvironmental influence on vegetational pattern near timberline in the Central Nevada. Ecological Monographs, 35: 187–211.
- Mani, M. S., 1978: Ecology and Phytogeography of High Altitude Plants of the Northwest Himalaya. New Delhi: Oxford and IBH Publishing Company. 298 pp.
- May, D. E. and Webber, P. J., 1982: Spatial and temporal variation of the vegetation and its productivity, Niwot Ridge, Colorado. In Halfpenny, J. C. (ed.), Ecological Studies in the Colorado Alpine. University of Colorado, Institute of Arctic and Alpine Research, Occasional Paper, 37: 35–62.
- Purohit, A. N., 1987: Personal communication. High Altitude Plant Physiology Research Centre, Garhwal University, Srinagar, Garhwal, India.
- Ralhan, P. K., Khanna, R. K., Singh, S. P., and Singh, J. S., 1985a: Phenological characteristics of the tree layer of Kumaun Himalayan forests. Vegetatio, 60(2): 191–201.
- Ralhan, P. K., Khanna, R. K., Singh, S. P., and Singh, J. S., 1985b: Phenological characteristics of the shrub layer of Kumaun Himalayan forests. Vegetatio, 63(3): 113–120.
- Rana, B. S., 1965: Biomass and net primary productivity in different forest ecosystems along an altitudinal gradient in Kumaun Himalaya. Ph.D. thesis, Kumaun University, Nainital, India. 323 pp.
- Semwal, J. K., Gaur, R. D., and Purohit, A. N., 1981: Floristic pattern of an alpine zone Tungnath, in Garhwal Himalaya. Acta Botanica Indica, 9: 110–114.
- Singh, J. S. and Singh, S. P., 1987: Forest vegetation of the Himalaya. Botanical Review, 53: 80–192.