The Genus Bavenelia. By M. C. Cooke. 385 



two species are alluded to in the 'Introduction to Cryptogamic 

 Botany,' but with no additional information. 



In 1873 the technical descriptions of five species, of which 

 Bavenelia Indica was one, were given in the Journal of the Linnean 

 Society, with figures of the fruit. 



In 1874 Bavenelia glandulxformis was first described in 

 * Grevillea ' (vol. iii. p. 56). 



This appears to be all which has been written on the subject, 

 with the exception of the short note appended to the description of 

 B. stictica as to the occurrence of " Uredinoid bodies," hereafter 

 cited, and the paragraph in ' Cryptogamic Botany,' also quoted, 

 which relates to the structure of Bavenelia. 



It may be remarked that hitherto all the species have been 

 found on leguminous plants, that they usually occur on living 

 leaves, and that the habit and external appearance is very much 

 that of Phragmidium, the spore-masses being collected in sori, 

 and bursting through the cuticle, as in Puccinia and Phragmidium, 

 although sometimes these sori are so minute that they can scarce 

 include more than two or three of the spore-masses called hitherto 

 " pseudospores." 



It has always been supposed by the Eev. M. J. Berkeley that 

 Bavenelia was allied to Phragmidium, and in his " Introduction " 

 it is included in the Ceeomacei. There now remains no doubt of its 

 affinity with Triphragniium, and its immediate allies. 



It may assist in the comprehension of our subsequent remarks 

 if at once we enumerate the species included up to the present in 

 this genus. 



These are, Bavenelia glandulieformis Berk., with the capitules 

 (or pseudospores as Berkeley calls them) stipitate, about • 1 

 to • 12 mm. in diameter, with an average of five or six cells 

 in each direction, so that the cells are ' 02 mm. in diameter. The 

 capitules arc smooth, convex above and contracted beneath into an 

 uncoloured base which diminishes into the stem. This base, which 

 is described as plicate, appears to consist of empty cysts which cling 

 closely to the stem, the divisions of the cysts giving the plicate 

 appearance. It is a North American species, occurring on the leaves 

 of various species of Tejjhrosia (I'l. XL Fig. 1). 



Another stipitate species is Bavenelia Indica B., which has 

 been found on the legumes of certain plants in India. The capi- 

 tules are thick and have more the form of a truncated cone than 

 any other species, reminding one of a strawberry. At the base a 

 great number of uncoloured cysts surround the cupitulo like a frill, 

 and the diameter of the coloured portion is about '08 mm. 

 There are on tlic average four cells in each direction, so that in size 

 these cells arc about equal to those of the preceding species. (Fig. 3.) 



The remaining species do not exhibit a distinct stem, but although 



