Part 8, 1922] AECIDIACEAE 563 
97. Micropuccinia Sarachae (Mayor) Arthur & Jackson. 
Puccinia Sarachae Mayor, Mém. Soe. Neuch. Sci. Nat. 5: 499. 1913. 
O. Pycnia unknown, probably not formed. 
II. Telia hypophyllous, densely gregarious in groups 0.2-1 cm. across, on discolored 
spots, at first yellowish, small, round, 0.2-0.5 mm. in diameter, compact, cinnamon- or chest- 
nut-brown, becoming pulvinate and cinereous by germination; teliospores ellipsoid or obovate, 
16-23 by 29-39 yp, rounded or occasionally obtuse above, rounded or somewhat narrowed 
below, not or very slightly constricted at septum; wall golden-brown below, cinnamon-brown 
above, 1.5-3 4 thick, considerably thickened above, 5-8 », smooth; pedicel colorless, twice 
length of spore or shorter; mesospores occasionally intermixed. 
On SOLANACEAE: 
Saracha jaltomata Schlecht., Costa Rica. 
TYPE Loca.ity: Cafetal La Camelia, near Angelopolis, Antioquia, Colombia, on Saracha edulis. 
DistRiBUTION: Costa Rica; also in northern South America. 
ILLUSTRATION: Mém. Soc. Neuch. Sci. Nat. 5: f. 29. 
98. Micropuccinia incondita (Arth.) Arthur & Jackson. 
Puccinia incondita Arth. Bull. Torrey Club 45: 148. 1918. 
OQ. Pycnia unknown, probably not formed. 
III. Telia hypophyllous and caulicolous, closely gregarious or confluent into more or less 
rounded pulvinate masses I-3 mm. across, dark cinnamon-brown, early naked, ruptured 
epidermis inconspicuous; teliospores irregularly ellipsoid or oblong, 16-20 by 23-28 u, rounded 
at both ends or rarely somewhat narrowed below, slightly or not constricted at septum; wall 
cinnamon-brown, 1.5-2.5 » thick, not or somewhat thicker above, up to 6 4, smooth; pedicel 
colorless, sometimes longer than spore, usually breaking near spore. 
On SOLANACEAE: 
Solanum triquetrum Cav., Texas. 
Type Locality: Austin, Texas, on Solanum triquetrum. 
DISTRIBUTION: Known only from the type locality. 
99. Micropuccinia Pittieriana (P. Henn.) Arthur & Jackson. 
Puccinia Pittteriana P. Henn. Hedwigia 43: 147. 1904. 
Uredo Piitieri P. Henn.; Pittier, Pl. Usual. Costa Rica 69, 122, hyponym. 1908. 
O. Pycnia unknown, probably not formed. 
III. Telia hypophyllous, densely gregarious and finally more or less confluent in orbicular 
groups 3-5 mm. across, on yellowish or discolored spots, small, round, 0.2-0.5 mm. across, 
early naked, chestnut-brown, at first compact, becoming somewhat pulverulent in resting 
form, in germinating form becoming pulvinate and cinereous, ruptured epidermis not con- 
spicuous; teliospores small, broadly ellipsoid or oblong, 18-23 by 26-34 », rounded above 
and below, not or slightly constricted at septum; wall cinnamon-brown, 1—2.5 yu thick, slightly 
and gradually thickened above, 4-6 w, smooth; pedicel colorless, firm, once to twice length 
of spore or more, commonly deciduous; mesospores commonly intermixed. 
On SOLANACEAE: 
Solanum tuberosum V,., Costa Rica. 
Tyre Locatity: Volcdn de Irazti, Costa Rica, on Solanum tuberosum. _ 
DISTRIBUTION: Mountains of Costa Rica; also in Ecuador, South America. 
100. Micropuccinia acrophila (Peck) Arthur & Jackson. 
Puccinia acrophila Peck, Bot. Gaz. 6: 227. 1881. 
Dicaeoma acrophilum Kuntze, Rev. Gen. 33: 467. 1898. 
O. Pyenia unknown, probably not formed. 
III. Telia amphigenous, chiefly hypophyllous, solitary, or few and crowded on purplish 
spots 3-8 mm. across, roundish, large, 0.4-1.5 mm. in diameter, long covered by the thin 
polished epidermis, pulverulent, cinnamon-brown, ruptured epidermis conspicuous; teliospores 
broadly ellipsoid, 16-21 by 24-34 4, rounded above and below, slightly or not constricted 
