Hippophae Rhamnoides L.

Abstract
An autecological study of Hippophag rhamnoides L. Included are the history of the sp., the taxonomy of the sspp., its distribution and climatic and topographical limitations, its response to biotic factors, to frost and drought, and to sand movement. Vegetation and soil analysis are given for a number of British stands of Hippophae. A list of animal feeders and plant parasites is included. The following points may be cited as of special interest. Hippophae shows considerable variation in leaf shape in both British and extra-British populations. Reproduction is mainly effected vegetatively by extensive stout horizontal roots giving rise to aerial shoots at irregular intervals. Lateral roots bear nodules containing mycorrhiza capable of fixing atmospheric nitrogen. Abundant viable seed is produced which requires cold pre-treatment for germination (normally supplied during early winter in the field). Hippophae is intolerant of shade and has a high photosynthetic compensation point. Economically, Hippophae is used for coastal protection and substrate stabilization, for shelter belts, for amenity and for the vitamin C contained in the fleshy pericarp.

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