660 Index to Recent Literature 



Land, W. J. G. Double Fertilization in Compositae. Bot. Gaz. 

 30: 252-260.//. 75-16. 15 O. 1900. 



Leavitt, R. G. Revisions in Berberis and Sagittaria. Rhodora, 



2: 149-155. //. 7p. Jl. I900. 



Lehmann, F. C, & Kranzlin, F. Mormodes Oberlanderianwn. 

 Gard. Chron. III. 28: 317, 318./. p6. 3 N. 1900. 



A new orchid from South America. 



Lindau. G. Acanthaceae. Symbolae Antillanae 2: 170-250. 20 

 O. 1900. 



Ancitranthus and Cent n 11 a gen. nov. Synopsis of West Indian species. 



Livingston, B. E. On the Nature of the Stimulus which causes the 

 Change of Form in polymorphic green Algae. Bot. Gaz. 30 : 289- 

 317. //. 77, 18. 15 N. 1900. 



Lloyd, F. E. The Douglas Spruce, Pseudotsuga taxifolia. Plant 

 World, 3: 65-68.//. 2. My. 1900; 85-87. Je. 1900. 



- 



Loesener, T. Beitrage zur Kenntniss der Flora von Central Amerika 



1 Mexico). — II. Engler's Bot. Tahrb. 29: 86-106, 



22 My. 1900. 



Microtrop 



Hyptis, described by C. De Candolle, O. von Seemen, K. Schumann and the author. 



MacDougal, D. T. The New York Botanical Garden. Pop. Sci. 

 Mo. 57 : 171-178. Je. 1900. [Illust.] 



MacMillan, C. Observations on Lessonia. Bot. Gaz. 30 : 318-334- 

 //. ip-2i. 15 N. 1900. 



Masters, M. T. Passiflora europhylla. Gard. Chron. III. 28: 

 350. 17 N. 1900. 



A new species from British Guiana. 



Maxon, W. R. Notes on American Ferns. — II. Fern. Bull. 8: 



5 8 > 59- J 1 - 19°°- 

 Maxon, W. R. The Hart's-tongue in Ne\* York and Tennessee. 

 Plant World, 3 : 129-132. S. 1900. [Illust.] 



Macomb, A. The Development of the karyokinetic Spindle in vege- 

 tative Cells of higher Plants. Bull. Torr. Club, 27: 451-459- P lm 

 24, 2j. 6 S. 1900. 



McDonald, H. E. A Sand Dune Flora of Central Illinois. Plant 

 World, 3: 101-103. Jl. 1900. 



Mez, C. Lauraceae et Bromeliaceae novae. Symbolae Antillanae, 

 2: 251-256. 20 O. 1900. 



New species in Ocotea, BromeHa, Hohenbergia, and Tillandsia. 



