1897] MEXICAN FUNGI aK 
finally separating into 2 cells; membrane hyaline, smooth.— On 
Brickellia, Rio Hondo, near City of Mexico, Oct. 4. 
RAVENELIA APPENDICULATA Lagerh. & Diet.—On Phyllanthus 
Galeottianus, Guadalajara, Oct. 12. 
Ravenelia expansa Diet. & Holw., n. sp.—Sori on both sides 
of the leaves, on large yellow spots, breaking through between 
the cuticle and epidermal cells: uredosori small, ochreous, con- 
taining numerous club-shaped brown paraphyses; spores ellip- 
tical or globose, 17-20 by 15-174, yellow-brown, with short 
spines: teleutosori irregular in outline, large, black-brown; heads 
hemispherical, 65-95 in diameter, smooth, chestnut-brown, 5 to 
6 spores in cross-section; spores cuneiform, I-celled, 14-18 
broad, apex strongly thickened (about 7) ; cysts pear-shaped, 
only under the margin of the peripheral spores—— On Acacia 
Lequilana Wats., Guadalajara, Oct. 13. 
Ravenelia Brongniartie Diet. & Holw., n. sp.—Sori breaking 
forth from beneath the epidermis: uredosori single or clustered, 
on both sides of the leaves, cinnamon-brown; spots large yel- 
low, about 5™™ in diameter, spores ovate to globose, 23-30 by 
18-25, with short spines and numerous germ-pores ; paraphyses 
none: teleutosori not on spots, black; heads hemispherical, 
85-115 in diameter, with 5-6 spores in cross-section, dark 
chestnut- brown, thickly covered on the upper side with large 
warts; on the margins scattering large dark-brown blunt proc- 
esses; inner spores of the head 2-celled, 16-21; cysts united 
into a coniform body, narrowed into the compound pedicel.— 
On Brongniartia, Cuernavaca, Sept. 23. 
Ravenelia levis Diet. & Holw., n. sp.— Sori on yellow spots 
about 1™ in diameter, scattered or confluent in round groups, 
on both sides of the leaves: uredosori chestnut-brown ; spores 
globose or ovate, 21~26 by 20-23, dark-brown, with short 
spines and numerous (12-15) germ-pores; paraphyses numer- 
ous, brown, clavate, stout: teleutosori black; heads irregularly 
rounded, hemispherical, go-125» in diameter, opaque, brown, 
smooth, with mostly 5-6 spores in each direction; inner spores 
with transverse septa, 20-26y; cysts flat, on the underside of the 
