Larix sibirica Ledeb. Fl. Alt. IV, p. 204; Karel. et. Kiril. Enum. PI. Fl. Alt. no. 824; 

 KpBM. ^JE. Ajit. VII (1914) p. 1721. Larix decidiia Mill. var. sibirica Korshinsky, Tent. 

 Fl. Ross. Orient. (1898) p. 493. Pinus Ledebourii Endlicher, Syn. Conif. (1847) p. 131; 

 Ledeb. Fl. Ross. Ill, p. 672; Turczan. Fl. Baical.-Dahur. (1854, II) p. 413, no. 1068. Larix 

 intermedia Fisch. ex Turczan. Cat. Baical. no. 1071. 



Of common occurrence in the wood region of the territory traversed, absolutely 

 preferring dry and hot ground, above all appearing to prevail on red Devonian sandstone, 

 where occasionally rather small larch forests are to be found, for instance between 

 Tshebertash and Ust Sisti-kem. Generally, it does not form woods, however, occurrhig 

 scattered, intermingled with the fir, sprucie, silver-fir, and, here and there, the cedar. In 

 the Urjankai land, the tree vegetation on the so-called wood-steppes (jLtcocTent) seemed 

 chiefly to consist of larch together with scattered firs, birches, and poplars. Similar wood- 

 steppes are common in the tract of land between Ust Sisti-kem and the Dora Steppe. 

 On the Abakan Steppe I found scattered larches on the tops of the ridges, and here and 

 there on the islets in the river. In dry places in upland regions, for instance on the Tannu- 

 01a, the larch ascends quite as high as the cedar. In favourable situations the larch 

 attains a height of over 40 m., with a trunk of about 1,5 m. in diameter. The trunks of 

 rather old trees are often branchless, only with a small crown at the top. 



Distribution: Northern and eastern Russia, Siberia, northern Mongolia, the Amoor 

 Province. 



Picea obovata Ledeb. Fl. Alt. IV, p. 201; Turczan. Cat. Baical. no. 1068; Epmi. *ji. 

 An. VII (1914) p. 1718. Picea vulgaris Link. var. altaica Tepl. in Bull. Soc. Imp. Nat. 

 Moscou (1868, III) p. 244—^52. Picea exelsa Link, Korshinsky, Tent. Fl. Ross. Orient 

 (1898) p. 494. Pinus orienlalis L. Spec. PI. ed. II (1763) p. 1421; Ledeb. Fl. Ross. Ill, p. 

 671; Turczan. Fl. Baical.-Dahur. (1854, II) p. 412, no. 1067. 



Very common in the wood region, where constituting the bulk of the dense, large 

 taiga, occasionally accompanying Abies sibirica, the fir, cedar, and larch. The trunks 

 attain a height of from 30 to 35 m. with a diameter at a man's height to 75 cm. On the 

 mountains, at any rate in the Altaian, it does not ascend quite so high as the cedar. In 

 moist, frequently mossy places it is often seen to propagate vegetatively, by means of 

 branches lying along the ground, shooting roots. Near Ust Algiac I have observed 

 this vegetative propagation to be of very common occurrence. The species is rather 

 varying in growth. One form with short branches, not uncommonly somewhat bent 

 upwards, especially prevails. As this from frequently attains a greater height than the 

 common form, its narrow, slender, cylindrical crown rises higher than the level edge 

 of the wood, in a very characteristic way. This form very commonly observed by me 

 in subalpine tracts in the Amyl taiga. 



Distribution: Northern Scandinavia, north-eastern Europe, Siberia, northern 

 Mongolia, Manchooria. 



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