o — 



2 cm. diam., which are often forming conspicuous convexities in the 

 hypophyll with corresponding concavities in the epiphyll. 



As the above list of synonyms^) indicates, this fungus has been 

 described several times as a rust-fungus, and its habitus comes also very 

 near to that of a Caeoma. Undoubtedly also Cooke has understood 

 these Albngo-con\6\dt. as the aecidiospores to his Puccinia Ipomaeae (Sac- 

 car do: Syll. Fung. VII, p. 671). Hence it must be considered as ob- 

 jectionable, when H. et P, Sydow in Monograph. Ured. I Puccinia p. 324 

 state P. Ipomaeae Gke. (sensu autoris) as synonymous with P. Ipomaeae- 

 panduranae Syd. in spite of the heterogeneity of the first named species. 



If the uredineal element in P. Ipomaeae Cke. has really its place 

 under the species P. Ipomaeae panduranae (Schw.) Syd., as stated by H. 

 el P. Sydow 1. c, the Cookean species will thus turn out to be composed 

 of two elements: Albugo Ipomaeae panduranae (Schw.) Sw. and Puc- 

 cinia Ipomaeae panduranae (Schw.) Syd. 



On leaves of Ipomaea pes caprae. 



St. Croix: Sandy Point 16. 1.06 (nr 1806), 26. 1.06 (nr. 3107). 



St. Jan: Riff Bay 8.3.06 (nr. 1804); loc. unknown: (nr. 2614). 



Ustilagineae. 



Ustilago Fimbristylis Tlium. Bull. Torr. Bot. Club., Jan. 1876. — 

 On Fimbristylis diphylla. 



St. Thomas: Crown Nov. 1905 (nr. 3122). 



Ustilago Maydis (D. C.) Cda. Icon. V p. 3. — In a corncob of 

 Zea Mays. 



St. Croix: Jolly Hill 16. 1.06 (nr. 1839). 



Uredineae. 



Aecidium Cissi Wint. Hedw. 1884 p. 168. — On Cissus sicyoides. 



St. Croix: Caledonia Valley 2. 2. 06 (nr. 1807); Jolly Hill 30. 12. 05 

 (nr. 1816). 



St. Thomas: Crown 7. 12.05 (nr. 1820 b); Levenlund Nov. 05 (nr. 

 1820 a), Dec. 05 (nr. 1828), 14. 12.05 (nr. 1833), (nr. 2191). 



Coleosporium Sonchi (Pers.) Lev. Ann. Scienc. Nat. 1887 p. 373. 

 — Uredo on leaves of Elephantopus mollis. 



St. Croix: Jolly Hill 20.1.07 (nr. 1788, nr. 1794). 



Puccinia appendiculata Wint. Flora 1884 p. 262. 



H. et P. Sydow: Monographia Ured. I Puccinia p. 244 contains a 

 detailed description of this species, and it is here especially pointed out 



') In Wilson: North American Peronosporales pg. 68 (Bullet. Torrey Bot. 

 Club Febr. 1907). 



