52" INDEX TO AMERICAN BOTANICAL. LITERATURE 
Taylor, A.M. Ecological succession of mosses. Bot. Gaz. 69: 449-491- 
f. a2. 17 Je 1920. 
Taylor, N. A rare palm from Cuba in the conservatories. Brooklyn 
Bot. Gard. Rec. 9: 101, 102. Jl 1920. 
Coccothrinax crinita. 
Taylor, W. R. On the production of new cell‘ formations in plants. 
Contr. Bot. Lab. Univ. Pennsylvania 4: 271-300. pl. 71-78. 
1920. 
Thiel, A. F., & Weiss, F. The effect of citric acid on the germination 
of the teliospores of Puccinia graminis Tritict. Phytopathology 
10: 448-452. f. r. 25 O 1920. 
Thompson, C. A., & Barrows, E.L. Soil moisture movement in relation 
to. growth of alfalfa... New Mexico Coll. A. & M. Arts Bull. 
123: I-38. F 1920. 
Toepffer, A. Nordasiatische und nordamerikanische Weiden (Salix) 
Gallen. Beih. Bot. Centralbl. 37: 279-287. 20 F 1920. 
Trelease, W. Amaryllidaceae, in Standley, P. C. Trees and shrubs 
of Mexico. Contrib. U.S. Nat. Herb. 23: 105-142. 1920. 
Includes 31 new species of A gave. 
Ulbrich, E. Einige neue Lupinus-Arten aus den Anden von Peru. 
Notizbl. Bot. Gart. und Mus. Berlin-Dahlem 7: 452-454. 16 My 
1920. 
3 species described. 
Ulbrich, E. Eine neue Sedum-Art aus dem botanischen Garten in 
Dahlem. Notizbl. Bot. Gart. und Mus. Berlin-Dahlem 7: 111, 112. 
15 My 1917. 
Sedum aoikon, probably from Mexico. 
Uphof, J. C. T. Physiological anatomy of xerophytic selaginellas. 
New Phytol. 19: 101-131. f. 1-12. 10 Jl 1920 
Vaupel, F. Echinocactus Ottonis Lk. et Otto. Monatschr. Kakteenk. 
29: 124. N 1920. [Illust.] eee 
Vaupel, F. Melocactus hispaniolicus Vpl. spec. nov. Monatschr- 
Kakteenk. 29: 121. N 1919. 
From Hispaniola 
Vischer, W. Sur % Quaraibea Aubl. un genre de Bombacées a ovaire 
infére. Bull. Soc. Bot. Genéve 11: 199-210. f: 1-§. 15 Jé 1920. 
Includes Q. Chodati sp. nov. from Costa Rica. 
Wagner, R. Erlaiiterungen zu_Plumiers Abbildung der Anzchites 
lappulacea (Lam.) Miers. Osterr. Bot. Zeitschr. 67: 337-345. f. 
I-3. F918. a 
