76 Witson : NortH AMERICAN PERONOSPORALES 
Senecio oblanceolatus Rydb., Colorado, Demetrio (N. Am. 
Fungi 2208, on “S. aureus.” The host is mixed but 
chiefly as cited here). 
Senecio peninsularis Vasey & Rose, Baja California, * Palmer 
659. . 
Senecio serra Hook., Montana, *Kelsey ; Washington, * Piper. 
On CICHORIACEAE : 
Tragopogon porrifolius 1., Massachusetts, Farlow (N. Am. 
Fungi 2056); New Jersey, Halsted (Econ. Fungi 445); 
New Mexico, *Mulford 1285a ; New York, Arthur, Under- 
wood. : 
The following additional hosts are reported within our limits : 
Antennaria plantaginifolia (L.) Richards., Artemisia canadensis 
Michx., Gaertneria discolor (Nutt.) Kuntze, Senecio aureus L, S. 
lugens Richards., and S. serra integriusculus A. Gray. 
Type tocatity: Europe, on Zragopogon porrifolius L. 
DistRiBuTION : Newfoundland to Washington, Baja California 
and Alabama. Also in South America, Europe, Asia, Africa and 
Australia. 
8. Axrpuco guaprata (Kalchb. & Cooke) Kuntze, Rev. 
Gen. Pl. 2: 658. 1891 
This species is known ohly from Cape Colony, where man 
collected on Herpestis verticillaris Nees by McOwen. The cont 
are most nearly like those of A. Zragopogonis, but in the un 
of odspores it is impossible satisfactorily to refer the species toa 
place in the genus. 
g. Albugo Tillaeae (Lagerh.) 
Cystopus Tillaeae Lagerh.; Pat. & Lagerh. Bull. Soc. Myc- Jk pect 
S: 167... 2851. ‘ 
No material of this species has been examined ; but the pes! 
tion indicates a close relationship with A. Bli. It is known 0" y 
_ from Quito, Ecuador, the type locality, where it occurs 0M Ti illaea 
- _ rubescens H.B.K. Species of this genus occur sparingly ™ 
tro pica i Am . 
