INDEX TO AMERICAN BOTANICAL LITERATURE 83 
Meyer, R.  Echinocactus horizonthalonius Lem. und seine Varietaten. 
Monats. Kakteenk. 21: 177-182. 15 Digit. [Illust.] 
Meyer, R.  Echinopsis Eyriesti Zucc. var. grandiflora R. Mey. var. 
nov. Monats. Kakteenk. 21: 186. 15 D tort. 
Meyer, R. Uber Echinopsis rhodotricha K. Schum. und deren Varietiit 
argentiniensis R. Mey. Monats. Kakteenk. 21: 186-189. 15 D 
Murrill, W. A. Illustrations of fungi—X. Mycologia 4: 1-6. 6 Ja 
Noter, R. de. Notes sur les A gave, Dasylirion, Bonapartea et Beschor- 
neria. Rev. Hort. 36: 70-73. I Mr 1910; 36: 90, 91. 15 Mr 
1910; 36: 338-340. 15 O 1910; 36: 401-403. 15 D 1910; 37: 54- 
56. 15 F 1911; 37: 394. 15 D 1o11. [Illust.] 
Olsson-Seffer, R.I. The semi-tropical grasses of Australia. Am. Rev. 
Trop. Agr. 1: 43-51. °F toro, 
Purpus, A. Echinocactus electracanthus Lem. Monats. Kakteenk. 21: 
170-173. 15 N rort.  [Illust.] 
Quehl, L. Zur Richtigstellung. Monats. Kakteenk. 21: 183. 15 D 
IQIt. 
Contains notes on Mamillaria. 
Record, S. J. Tier-like arrangement of the elements of certain woods. 
Science II. 35: 75-77. 12 Ja 1912. 
Reed, H. S., & Cooley, J.S. _Heterosporium variabile Cke., its relation 
to Spinacia oleracea and environmental factors. Centralb. Bakt. 
Zweite Abt. 32: 40-58. f. 7-9. 5 D 1911. 
Robinson, C. B. Alabastra philippinensia, III. Philip. Jour. Sci. 6: 
(Bot.) 319-358. N IQIl. 
Includes descriptions of many new species. 
Rose, J. N. Exploration in the southwestern states and west coast of 
Mexico. Jour. N. Y. Bot. Gard. 12: 253-256. N 1911. 
Rydberg, P.A. Report of a trip to southeastern Utah in the summer 
OP I9s%; Jour. N. ¥.-Rote Gard. xa: 237-253- f. 33-42. N 1911. 
Schaffner, J. H. The classification of plants,—VII. Ohio Nat. 12: 
409-419. D 1911. 
Schuster, J. Osmundites von Sierra Villa Rica in Paraguay. Ber. 
Deuts. Bot. Gesells. 29: 534-539. pl. 20+ f. 1-4. Ja 1912. 
Includes Osmundites Carnieri sp. nov. 
Shull, C. A. The oxygen minimum and the germination of Xanthium 
seeds. Bot. Gaz. s2: 453-477.f. 1. 19 D Igri. 
Skan, S. A, Calceolaria cana. Curt. Bot. Mag. IV. 8: pl. 8416. 
Ja 1912, 
A plant from Chile. 
