. Contributions from the Botanical Laboratory, vol. 9. Botany; Botany. Phot. 3. Pinits silucstris forming the tree-Hne at 1200 Phot. 4. ragiis tauvica creeping down on tlic south slope; siunmit of Yaila to the right. SEIFRIZ—Sketches of the Vegetation of some Southern Provinces OF Soviet Russia: I, Altitudinal Distribution in the Crimean Mountains 77/ Vegetation of some Southern Provinces of Soviet Russia 368 the world-wide Epilobium angustifolium (not a typical Crimean plant); Echium vulgaTe\ Cirsium incanum\ Linaria vulgaris (it is always of interest to find in far corners of the wo
. Contributions from the Botanical Laboratory, vol. 9. Botany; Botany. Phot. 3. Pinits silucstris forming the tree-Hne at 1200 Phot. 4. ragiis tauvica creeping down on tlic south slope; siunmit of Yaila to the right. SEIFRIZ—Sketches of the Vegetation of some Southern Provinces OF Soviet Russia: I, Altitudinal Distribution in the Crimean Mountains 77/ Vegetation of some Southern Provinces of Soviet Russia 368 the world-wide Epilobium angustifolium (not a typical Crimean plant); Echium vulgaTe\ Cirsium incanum\ Linaria vulgaris (it is always of interest to find in far corners of the world species identical with those so familiar at home); Melam/pyrufri nemorosum (Scrophulariaceae); Ranunculus polyanthemos ] Salvia glutinosa, with its ingenious automatic spring for cross pollination; the endemic, Melilotus tauricus) and Lappa (Arctium) tomentosa (Corapositae), with huge (maximum 18 inch) heart-shaped leaves. One fern is met with, Dryoptcris filix-mas. Zone IV. The tree line (1000-1250 m.). As one climbs on to the first shelf of the high Yaila plateau at about 1000 m. or more, there is a sudden change in the type of vegetation. The change may be clear cut or not, depending upon the topography of the imme- diate surroundings. Alpine plants make their first appearance. Trees are much reduced in size, more irregular in shape, and occur in smaller groups of close formation. Typical Krummholz is met with. Here occurs the tree line, formed by Pinus silvestris (PI. XV, Phot. 3) and Fagus taurica (Phot. 4); the two species rarely occur together. On the western slope of the Nikita spur the pine alone forms the tree line. On the eastern slope the beech predominates. The fourth zone does not form a continuous belt, nor is it extensive in width. It consists of scattered areas whc^re the trees of the third zone, more dwarfed in size, get up into the alpine pastures. The tree line region is essentially composite in character, consisting of small woods and meadows; florist
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbotany, bookyear1892
