178 
Mycologia 
12. Ravenelia Stevensii sp. nov. 
Pycnia not seen. 
Uredinia hypophyllous, numerous, scattered, round, small, o.i- 
0.3 mm. across, subcuticular, early naked, dull cinnamon-brown, 
ruptured cuticle inconspicuous ; paraphyses in a thick peripheral 
ring, upright, capitate to clavate, 9-12 by 37-45 /x, smooth, wall 
of head 2-5 /x, cinnamon-brown, passing into the thin-walled, 
colorless stipe ; urediniospores oblong, cylindric-oblong, or nar- 
rowly obovoid, 8-13 by 2 5-30 /x; wall cinnamon-brown, paler 
below, uniformly thin, less than i /x, slightly thicker above, very 
finely and inconspicuously verrucose-echinulate, the pores usually 
indistinct, about 4, equatorial. 
Telia hypophyllous, few, very small, subcuticular, blackish- 
brown ; teliospore-heads chestnut-brown, 3-6 cells across, 40-63 /x 
across, each spore bearing 1-3 nearly hyaline tubercles, 2-3 /x 
thick, 6-19 /X long, 2-3 forked above; cysts hyaline, globoid, ex- 
tending from periphery to pedicel, not bursting in water ; pedicel 
hyaline, short, usually wanting. 
On Mimosaceae: 
Acacia riparia H.B.K., Guayanilla, Nov. 13, II, III, ^881 
(type) ; Vega Baja, Feb. 22, II, ^66, May 18, II, 2047; 
Penuelas, Nov. 8, II, 48pj. 
This very distinctive species of Ravenelia is dedicated to Dr. 
F. L. Stevens, who has not only made all the collections of it so 
■far known, but has supplied a wealth of material representing 
Porto Rican Uredinales far exceeding that of all previous col- 
lectors, as the present paper amply testifies. 
13. Prospodium appendiculatum (Wint.) Arth. Jour. Myc. 
13: 31- 1907- 
Puccinia appendiculata Wint. Flora 67 : 262. 1884. 
On Bignoniaceae : 
Stenolobium Stans (L.) D. Don. {Tecoma Stans Juss.), 
Hormigueros, June 23, II, 2494. 
The other West Indian collections seen by the writer are by 
E. W. D. Hoi way in Cuba at Holquin and at Havana, 1903, by 
Dr. Stevens in Martinique, Aug. 4, 1913, 2974, all three on S. 
Stans and all showing uredinia only, and one by Holway in 
Jamaica, on S'. Stans, Feb., 1915, ppp, showing II & HI. 
