452 NORTH AMERICAN FLORA [VoLuME 7 
verrucose; aeciospores broadly ellipsoid, 18-24 by 24-29 y; wall colorless, thick, 2-3 », closely 
and finely verrucose. 
III. Telia epiphyllous, scattered or circinating opposite the aecia, round or oblong, 
0.2-1 mm, across, early naked, compact, becoming somewhat pulverulent, blackish-brown, 
ruptured epidermis conspicuous; teliospores ellipsoid or oblong, 19-23 by 23-39 u, rostrate 
at apex, rounded below; wall dark chestnut- or chocolate-brown, yellowish or colorless in 
the beak, thick, 3-5 4, thickened up to 7-12 4 at apex to form the beak, closely and finely 
verrucose in rather evident longitudinal lines; pedicel colorless, about length of spore, 
somewhat fragile. 7 
On SOLANACEAE: 
Cestrum nitidum Mart. & Gal., Mexico (state). 
TYPE LOcALIty: Amecameca, Mexico, on Cestrum nitidum. 
DISTRIBUTION: Known only from the type locality. 
23. Pucciniola maculans (Pat.) Arthur. 
Uromyces Cestri maculans Pat. Bull. Soc. Myc. Fr. 28: 140. 1912. 
Uromyces maculans Arth. Mycologia 10:-124. 1918. 
O. Pycnia not seen. 
I. Aecia mostly hypophyllous, scattered, single or loosely grouped in areas appearing 
dark on upper side of dried leaf, cupulate, 0.2-0.3 by 0.1 mm.; peridiuum yellowish-white, in- 
conspicuous, ustially covered by the epidermis; peridial cells rhomboidal or rhombic, 10-13 
by 29-42 yw, overlapping, the outer wall colorless, about 2.5—3 » thick, the inner wall colorless, 
about 2.5 uw thick, finely verrucose; aeciospores usually globoid, occasionally ellipsoid, 21-26 
by 24-28; wall colorless, varying in thickness, 1.5-3 4, very finely and inconspicuously 
verrucose. 
IIL. Telia epiphyllous, scattered, single or loosely grouped, round or oblong, 0.2-0.8 mm. 
across, early naked, pulvinate, dark chestnut- or chocolate-brown, surrounding epidermis 
inconspicuous; teliospores globoid or broadly ellipsoid, 19-23 by 24-29 uw, rounded or sometimes 
acute above, rounded or slightly narrowed below; wall chestnut-brown, 1.5-2.5 yu thick, thick- 
ened at apex, 4-8, sometimes tipped with a light-yellow or colorless cuticle, appearing 
smooth when wet and finely verrucose, mostly in longitudinal lines when dry; pedicel colorless, 
of uniform diameter, fragile. 
On SOLANACEAE: 
Cesirum lanatum Mart. & Gal., Guatemala. 
Cesirum nocturnum 1,., Costa Rica. 
Types Locatiry: Near San José, Costa Rica, on Cestrum [nocturnum]. 
DIstRiBuTIoNn: Central America. 
24. Pucciniola Cestri (Mont.) Arthur. 
Aecidium Cestri Mont. Ann. Sci. Nat. II. 3: 356. 1835. 
Uredo Cesiri Bert.; Mont. Ann. Sci. Nat. II. 3: 356. 1835. 
Uromyces Cestri Lév. Ann. Sci. Nat. II. 8: 371. 1847. 
Caeomurus Cestri Kuntze, Rev. Gen. 33: 449. 1898, 
Uromycopsis Cesiri Arth. Résult. Sci. Congr. Bot. Vienne 345. 1906. 
O. Pycnia unknown. 
I. Aecia usually hypophyllous, rather loosely grouped or closely circinating in spots 2-10 
mm. in diameter, cupulate or short-cylindric, 0.4-0.8 mm. in diameter, usually about 0.2 mm. 
in height, deeply seated in the mesophyll; peridium whitish, the margin erose, usually not 
projecting above the host-tissue; peridial cells irregularly and narrowly oblong or rhomboidal 
in radial section, 12-23 by 31-58 uw, overlapping, the outer wall 1.5-3 » thick, finely and closely 
verrucose, the inner wall 2-5 u thick, finely and closely verrucose; aeciospores angularly oblong, 
ellipsoid, or globoid, 19-26 by 25-37 u; wall colorless or yellowish, 1.5—3 yw thick, closely and 
finely verrucose. 
III. Telia usually epiphyllous, loosely grouped upon the spots with the aecia, round or 
oblong, 0.2-1.2 mm. across, early naked, compact, becoming slightly pulverulent, blackish- 
brown, ruptured epidermis conspicuous; teliospores ellipsoid, oblong, or globoid, 19-26 by 25- 
35 uw, rounded or acute above, sometimes slightly narrowed below; wall chestnut-brown, some- 
times with colorless thickening above, thick, 2.5-5 », thickened at apex, 4-8 u, smooth or 
