ARTHUR AND JOHNSTON: UREDINALES OF CUBA 121 
physical, political, and natural history of Cuba, issued irregularly 
in parts about 1840-65, both from Paris and Havana. The 
volumes 9-12, treating of natural history, were edited and in part 
written by Ramon de la Sagra, volume nine being Montagne's 
treatment of the cryptogams, the material for which is generally 
understood to have been collected by de la Sagra. An excellent 
description of this species was given by Montagne under the name 
Puccinia plagiopus, together with figures of both kinds of spores, 
and also of the coriaceous leaflet and peltate hair of the host. 
The reason for figuring the unusual form of hairs was not to help 
in the identification of the host, which was said to be wholly un- 
known (mihi prorsus ignota), but because the writer thought he had 
discovered a remarkable metamorphosis, by which the peltate hair 
became the envelope surrounding each group of spores. The 
circle of paraphyses bounding each sorus forms a unique fimbri- 
ated structure supported on a pedicel-like base, and easily de- 
tachable as a whole, having about the size and color of the plant- 
hairs, so that the error of interpretation was a natural one. 
No further information regarding this rust became available 
until the original collection was restudied by Monsieur P. Hariot 
of the Paris Museum (Bull. Soc. Myc. Fr. 7: 196. 1891) half a 
century later. After an extended discussion he expresses the 
opinion that it doubtless constitutes the basis of a new genus 
related to Puccinia, Phragmidium, and Uropyxis, having uredinio- 
spores surrounded by a membrane, teliospores with a Uropyxis- 
like, gelatinous covering, and “по paraphyses." However, with 
only one specimen in the herbarium he hesitates to establish the 
genus (il serait téméraire de se prononcer). The paraphysate 
structure, which Montagne thought might be a transformed hair 
of the host, is described by Hariot as a hyaline halo in form of a 
collar with wavy edge, but he does not associate the term para- 
physes with it, hence his nascent genus is said to be without para- 
physes. 
Hariot attempted to advance the identity of the host by sug- 
gesting that the nature and form of the hypophyllous hairs indi- 
cated a member of the Oleaceae, a statement followed in Sydow's 
Monographia Uredinearum (1: 345. 1902). 
When working on the second part of the rust portion of the 
