OF ARTS AND SCIENCES. 83 



germination, there is, so far as we yet know, no reason why they may 

 not be the uredo spores. On the other hand, their general appear- 

 ance and the density of the cell wall would lead one to suppose that 

 they were of a teleutosporic nature. Further conjecture is unneces- 

 sary, because, as the species is not at all rare in some localities, botan- 

 ists who can examine the fungus on the spot ought to be able to 

 ascertain whether the one-celled bodies produce promycelia or not, or 

 else to discover the true uredo of the species. Although a Uromyces 

 and a Paccinia may grow in close proximity to one another on the 

 same leaf, I presume that almost no one would maintain that a 

 Uromyces and a Puccinia could grow together in the same sorus, and 

 assume tliat, in the present instance, we have to do with a distinct 

 Uromyces and a distinct Puccinia. 



No. 1052. Puccinia Lantanoe Farlow. As far as I can ascertain, 

 an undescribed form, although it may prove to be the same as some 

 tropical form which has escaped my notice. It is very common in 

 Bermuda on Lantana odoruta L. in January and February. It is 

 infested by the parasite Tuhercularia persicina Ditm., which gives a 

 purple appearance to the sori in some of the specimens distributed. 



Puccinia Lantana Farlow. Sori round, naked, soon jDulvinate, 

 collected in irregular groups. Uredo unknown. Teleutospores ger- 

 minating in the sorus, purple brown, slender-stalked, thin-walled, some 

 two-celled, ovate, obtuse, slightly constricted at the septum, apex 

 blunt or sliglitly mucronate, 26-38/a long by 19-26/x broad; mixed 

 with oue-celled, obovate, or irregularly elliptic spores, 23-27/a long by 

 15.5-20/A broad. 



On leaves of Lantana odorata L. Bermuda. 



The species is of interest in connection with P. vexans, as both 

 species have in the same sori both one- and two-celled spores. In 

 P. Lantanee, however, the one-celled bodies are evidently teleuto- 

 spores, as they produce promycelia while still attached, as may be 

 seen in no. 1052. 



Nos. 296-300. The generic names of these species should be cor- 

 rected, although, with the exception of 299 and 300, the species are ■ 

 not new. 296. Ascomyces Tosquinetii and Taphrina aurea are both 

 common, and the generic names are those adopted by Magnus in 

 Hedwigia, September, 1874. The form of the last-named species, 

 which occurs on the leaves of Populus, is unknown to me in Massa- 

 chusetts. 



No. 300. Exoascus flaws Farlow should not be confounded with 

 Exoascus Betidce Fuckel, although both occur on Betida alba. The 



