Arthur: Uredinales of Porto Rico 
23 
loosely in the tissues of the host, from which it is usually sharply 
defined by a deep stain. Careful search was made for telia, 
without success. 
The same species of rust and on the same species of host was 
collected by E. W. D. Holway in Jalapa, Mexico, October 3, 1898, 
3090. 
152. Uredo Piperis P. Henn., on Peperomia hernandifolia 
(Vahl) A. Dietr. (Piperaceae) , Bandera, July 14, 1915, 
82^3. The excellent material secured by Professor Stevens 
is placed under this Brazilian species with some hesitation, 
as the type has not been seen. The applicable description 
(Hedw. Beibl. 38: 70. 1899), and the close relationship 
of the two tropical host genera. Piper with its 600 species, 
and Peperomia with its 400 species, however, seem to war- 
rant the use of the name. There is a Uredo Peperomiae 
P. Henn. from Brazil, which is a distinctly different fungus. 
153. Uredo Sauvagesiae sp. nov. 
Uredinia hypophyllous, grouped on blackish-purple spots, 1-3 
mm. across, round, small, o.i mm. in diameter, ruptured epidermis 
prominent, dark cinnamon-brown, subepidermal ; urediniospores 
ellipsoid or obovoid, 17-20 by 24-27 /.i; wall cinnamon-brown, 
thin, 1-1.5/t, closely and finely echinulate, the pores indistinct, 
probably two and equatorial. 
On Ochnaceae : 
Sauvagesia erecta L., Jejome Alto, July 17, 1915, 83/6. 
The host is a common tropical plant occurring around the world. 
No rust has heretofore been reported upon it, or upon any member 
of the family. The sorus is of the usual applanate sort common 
to the Aecidiaceae, without paraphyses. 
154. Uredo Hameliae sp. nov. 
Uredinia epiphyllous, loosely grouped on indefinite, slightly 
paler and unthickened spots 1-1.5 cm. across, applanate, round, 
small, 0.2-0.4 mm. across, pale cinnamon-brown ; urediniospores 
globoid or short obovoid, 15-21 by 19-24 ju,; wall pale yellowish, 
thin, 1 fx, distinctly echinulate with points i-i.5ju. apart, the pores 
uncertain, possibly 2 and equatorial. 
On Rubiaceae : 
H amelia erecta Jacq. {H. patens Jacq.), Lajos, June 17, 
1915- 
