78 



Mycologia 



Trichostigma octandrum (L.) Walt. (Rivina octandra L.) ; 

 Yauco, March 30, I, II, III, 354; Coamo, April 24, I, 

 355- 



The first record on T. octandrum for Porto Rico, this being 

 the host on which the type was collected by Charles Wright in 

 Cuba. 



57. Puccinia Zorniae (Diet.) McAlpine, Rusts Austr. 172. 



1906. 



Uredo Zorniae Diet. Hedw. 38 : 257. 1899. 

 On Fabaceae : 



Zornia diphylla (L.) Pers., Mayagiiez, March 7, II, 200; 

 Barceloneta, April 6, II, 199. 

 This species is now first reported from the West Indies. It 

 has been known heretofore on the same host from Brazil, and on 

 other hosts from the southern United States near the Gulf of 

 Mexico, and from southern Africa and Australia. Only in Au- 

 stralia have teliospores been found. 



The presence of paraphyses in the uredinia has not been here- 

 tofore recorded. They can only be seen well by use of sections. 

 They are peripheral, scarcely rise above the spore mass, are deli- 

 cate, clavate, 9-12 by 30 /x, with thin, colorless walls. 



58. Puccinia Ormosiae sp. nov. 



On Fabaceae: 



Ormosia Krugii Urban, El Yunque, April 14, II, iii, 2/6 

 (type) ; Naguabo on slope of El Duque, April 19, II, 

 iii, 277. 



Uredinia hypophyllous, scattered or somewhat grouped, round, 

 0.1-0.5 mm. in diameter, subepidermal, early naked, ruptured 

 epidermis inconspicuous ; paraphyses encircling the sorus, promi- 

 nent, appearing under a hand lens like a whitish fringe, branched 

 from near the base, expanding above into a large, irregular, 

 botryoid head, nearly colorless, becoming fugacious when old ; 

 urediniospores irregularly obovoid, 20-26 by 24-32 fx ; wall chest- 

 nut-brown, about I— 1 .5 fi thick, sparingly echinulate with promi- 

 nent, slender points, only one pore, basal, rather obscure. 



Teliospores arising from the uredinial sori, ellipsoid, 23-25 by 

 29-34^, rounded at both ends, moderately constricted at septum; 

 wall chestnut-brown, uniformly 1.5^ thick exclusive of the 

 closely-set, large, bead-like warts, 2.5-3.5 /x in diameter; pedicel 

 fragile, the spore readily breaking away close to the hilum. 



