LITERATURE 
BONNIER, GASTON: Recherches expérimentales sur l’adaptation des plantes au 
climat alpin. (Annales des sc. nat. Bot. 7 sér. 20.) 1894. 
—: Les plantes arctiques comparées aux mêmes espèces des Alpes et des 
Pyrenées. (Rev. gén. de bot. 6.) 1894. 
BorGESEN, F.: Bidrag til Kundskaben om arktiske Planters Bladbygning. 
(Bot. Tidsskrift 19.) Kjobenhavn 1895. 
Cowtes, H. C.: The ecological relations of the vegetation of the sand-dunes 
of lake Michigan. (Bot. Gazette 27.) Chicago 1899. 
pu RıETz, G. E., Fries, TH. C. E., TENGwALL, T. A.: Vorschlag zur Nomen- 
klatur der sociologischen Pflanzengeographie. (Svensk botanisk Tids- 
skrift 12.) 1918. 
DUTHIE, J. F.: A list of the plants collected on the Pamirs. (in Alcock, A. 
W.: Rep. on the natural history results of the Pamir boundary com- 
mission). Calcutta 1898. 
FEDTSHENKO, B. A.: Sketch of the vegetation of the Pamirs, Shugnan and 
Alai. (In Russian with German resumé.) (Trudy Imp. St. Petersb. Obsh. 
Jestestvopit. 33.) 1902 (?). 
—: Pamir i Shugnan (P. and S.) (In Russian). (Imp. Russk. geogr. Obsh.) 
St. Petersburg 1902. 
—: Contributions to the flora of Shugnan (In Russian). (Trav. du musée 
bot. de l’ac. Imp. des Sc. de St. Pb. I.) 1902. 
—: Letters from Pamir and Shugnan. (Bull. du jard. Imp. bot. de St. Pb. 
IV.) 1905. 
—: Second voyage au Pamir (Lettres de voyage). (Bull. Herb. Boissier 
ser VI) 1906: 
FEDTSHENKO, OLGa: Pamir plants, collected in 1901 by B. A. and O. A. 
Fedtshenko (In Russian). (Mat. k. posnan. fauni i flori Rossijskago 
Imp., otd. botan. No. 5.) Moskva 1903. 
—: Flore du Pamir (Acta horti Petrop. 21). 1903. — Supplem. I (ibid. 24), 
1904; II (ibid. 24), 1905; III (ibid. 28), 1907; IV (ibid. 28), 1909. 
—: A key to Pamir plants (in Russian) (ibid. 28). 1907. 
FICKER, H. v.: Zur Meteorologie von West-Turkestan. (Denkschr. d. kais. . 
Akad, d. Wiss., math.-nat. Cl. 81.) Wien 1908. 
