248 
Mycologia 
the urediniospores of P. Hyptidis. Until teliospores are discov- 
ered, the form is most conveniently left here. 
Collections of uredinia on the same host have also been made 
in Porto Rico at Bayamon, Jan., 1911, in Cuba at Baracoa, March, 
1903, and in Jamaica at Port Antonio, Feb., 1915, all by E. W. D. 
Holway. ' 
64. Puccinia insititia sp. nov. 
On Lamiaceae (Labiatae) ; 
Mesosphaeriim latanifoliiiin (Poir.) Kuntze (Hyptis latan- 
ifolia Poir.), Aibonito, June 5, 2123. 
A small amount of material was found, showing urediniospores 
only. These spores are quite unlike other American rusts on 
this genus of hosts so far seen by the writer, especially in having 
three equatorial pores. The specimen seems identical, so far as 
it goes, with a collection on the same host from Manos in the 
Amazon region of Brazil, collected by E. Ule in 1901, and dis- 
tributed under the name of Aecidium Hyptidis P. Henn. The 
Brazilian material shows urediniospores and a few teliospores. 
Many of the uredinia simulate aecia in gross appearance by the 
ruptured epidermis becoming white like a peridium, and some- 
what in the microscopic appearance by the fine, close sculpturing 
of the spores. There are no aecia present on the specimen in 
hand, and probably the name was given from the aecia-like ure- 
dinia. On the strength of this Brazilian collection, which is 
made the type as it is represented in the herbarium of the New 
York Botanical Garden, the form is here established as a species 
under the above name, with the following description : 
Uredinia hypophyllous, scattered, round, 0.3-0.6 mm. across, 
rather early naked, encircling epidermis evident, often white and 
peridioid, urediniospores globoid or broadly ellipsoid, 20-25 by 
23-28 /x; wall cinnamon-brown, thin, 1-1.5/x, densely and finely 
echinulate-verrucose, the pores 3, equatorial, often indistinct. 
Teliospores narrowly ellipsoid, 16-24 by 48-55 /<., rounded or 
obtuse above, rounded or narrowed below, slightly or not con- 
stricted at septum ; wall colorless, thin, i or less, smooth ; ped- 
icel colorless, delicate, about half length of spore. 
