CLINTON: NORTH AMERICAN USTILAGINEAE. 
441 
Neovossia corona Mass., Ivew Bull., 153 : 156. 1899. 
Exsiccati: Tilletia corona Scrib. (in litt .), on Leersia Virginica and L. 
oryzoides, Ell. & Ev., N. A. Fungi, 1896. 
Sori in ovaries, ovoid or ovate, about 3-4 mm. in length, more or 
less exposed between the glumes; spores showing different stages 
of development, when mature opaque, chiefly subspherical or spher¬ 
ical, with evident hyaline membrane ending at one side in a short 
pedicle-like projection, with evident sometimes slightly curved hya¬ 
line spines (on top of spore showing as papillae) extending out to 
membrane and with it forming a hyaline band 1-2 /z deep, chiefly 
19-25 ix in, diameter. 
Hosts: Leersia lenticularis , Miss.; L. oryzoides, D. C. (type), 
Mo. ; L. Virginica , D. C. (type), Ill., Miss., Ohio. 
This was originally described as occurring on Leersia though later 
some botanists associated with it the species on Panicum and Oryza. 
These are, however, three distinct species. This species differs from 
Tilletia pulcherrima and Tilletia liorrida in its smaller spores 
which have fine sharp spines and a very evident hyaline surround¬ 
ing membrane which ends in a pedicle-like projection. Because of 
this projection the species was placed by Massee under Neovossia. 
While this is somewhat more conspicuous than usual it is not an un¬ 
common occurrence with a number of the Tilletias. The germina¬ 
tion of the spores has not been reported. Literature: 125, 181. 
Tilletia pulcherrima Ell. & Gall. 
Tilletia pulcherrima Ell. & Gall., 1 Bull. Torr. Bot. Club, 23 : 210. 1896. 
Exsiccati: Tilletia pulcherrima Ell. & Gall., on Panicum virgatum , Seym. 
& Earle, Econ. Fungi Clinton Ust. Supp., C 52; Tilletia rotundata 
(Arth.) Ell. & Ev., on Panicum sanguinale , Seym. & Earle, Econ. Fungi, - 
543. 
Sori in ovaries, ovate or more elongated and somewhat curved, 
extending between the spreading glumes, about 3-4 mm. in length; 
hyaline sterile cells medium to very thick walled, chiefly smaller 
than the spores; spores showing different stages of development, 
the mature spores being opaque, subspherical to spherical, with 
1 This herbarium name is mentioned here by Tracy and Earle, but no fitting 
description is given, as they included it under Tilletia corona. 
