Part 8, 1922] AECIDIACEAE 547 
ON STERCULIACEAE: 
Buettneria carthaginensis Jacq., Costa Rica. 
Buetineria lateralis Pres|, Guatemala. 
Buettneria sp., Panama. 
‘TYPE LOCALITY: Escuintla, Guatemala, on Buettneria lateralis. 
DistRipution: Central America. 
56. Micropuccinia hiascens (Arth.) Arthur & Jackson. 
aor aucta Arth, & Holway; Arth. Am. Jour. Bot. 5:475. 1918. Not P. aucta Berk. & Miill., 
Puccinia hiascens Arth. Bull. Torrey Club 46: 471. 1920. 
O. Pycnia unknown. 
Ill. Telia hypophyllous, crowded in small mostly confluent groups 0.5-2 mm. across, 
on somewhat larger purple spots, round, 0.1-0.5 mm. in diameter, early naked, pulvinate, choco- 
late-brown, ruptured epidermis inconspicuous; teliospores oblong, 10-15 by 32-42 yw, rounded 
or obtuse at both ends, or often narrowed below, somewhat constricted at septum; wall 
light chestnut-brown or lighter after germination, 1.5-2 thick, much thickened above, 
3-10 u, smooth; pedicel light-brown or colorless, once to twice length of spore or shorter, 
persistent. 
On DILLENIACEAE: 
Saurauja Conzattit Busc., Guatemala. 
Saurauja Smithiana Busce., Guatemala. 
TYPE LOcaLity: Road between ‘Colomba and Quezaltenango, Guatemala, on Saurauja Smithiana. 
DISTRIBUTION: Guatemala. 
57. Micropuccinia Fergussoni (Berk. & Br.) Arth. & Jackson; 
Arth. Bull. Torrey Club 48: 41. 1921. 
Puccinia Fergussoni Berk. & Br. Ann. Nat. Hist. 1V.15:35. Ja 1875. 
Puccinia nidificans Magn. Hedwigia 14:20. F 1875. 
Dicaeoma Fergussoni Kuntze, Rev. Gen. 33: 468. 1898. 
Dasyspora Fergussoni Arth. Résult. Sci. Congr. Bot. Vienne 346. 1906. 
O. Pycnia unknown. 
III. Telia amphigenous, chiefly hypophyllous and petiolicolous on yellowish spots, small, 
0.2-0.5 mm. across, round, closely gregarious in more or less circular groups 0.2-1 cm. across, 
somewhat tardily naked, chestnut-brown, ruptured epidermis noticeable; teliospores some- 
what irregularly ellipsoid, oblong, or clavate, 13-18 by 26-42 4, rounded or obtuse above, 
rounded or more commonly narrowed below, slightly or not constricted at septum; wall 
cinnamou-brown, 1.5-2.5 mw thick, thicker above, 3-7 wu, smooth; pedicel short, deciduous. 
ON VIOLACEAE: 
Viola Langsdorfit Fisch., British Columbia. 
Viola Macloskeyi F. E. Lloyd, British Columbia. 
Viola neprophylla Greene (V. cognata Greene), Utah; British Columbia. 
Viola palustris L., Alaska, Colorado, Montana. 
‘TYPE LOCALITY: New ’Pitsligo, Scotland, on Viola palustris. 
Distriution: High mountains of northern Colorado and Utah, northwestward to south- 
eastern Alaska; also in Europe. 
ILLUSTRATIONS: Holway, N. Am. Ured. 1: pl. 29, f. 102; Grove, Brit. Rust Fungi f. 151. 
Exsiccatr: Barth. N. Am. Ured. 1542; Garrett, Fungi Utah. 53. 
58. Micropuccinia ornatula (Holway) Arthur & Jackson. 
Puccinia ornatula Holway, N. Am. Ured. 1: 67. 1907. 
QO. Pyenia unknown. 
Ill. Telia chiefly hypophyllous, occasionally epiphyllous, small, round, 0.2-0.5 mm. 
across, usually gregarious but rarely coalescing, early naked, punctiform, becoming pulveru- 
lent, chestnut-brown, surrounding epidermis persistent and conspicuous; teliospores angularly 
ellipsoid, fusiform, or oblong, 16-22 by 26-44 4, rounded or obtuse above, rounded or nar- 
rowed below, not constricted at septum; wall dark cinnamon-brown, uniformly thin, 1-2 p, 
smooth, except for two to four obscure longitudinal lines of fine papillae, the pores covered 
by an abrupt hyaline umbo, that of upper cell at apex or at one side, that of lower cell at 
septum or depressed half way; pedicel colorless, fragile, as long as spore, or more commonly 
deciduous. 
