Part 7, 1922] AECIDIACEAE 537 
TYPE LocaALiIty: Yonkers, New York, on leaves of Saxifraga [virginiensis]. 
_ DISTRIBUTION: West Virginia to Colorado and central California and northward into arctic 
regions; also in northern Norway. 
ILLUSTRATIONS: Bull. Lab. Nat. Hist. Univ. I 32: ol. 1, f. 7; : 
G8 (bie, 6 Ber, Denis Bot Ces 0: or a ee 0 eed eee 
Exsiccati: Arth, & Holway, Ured. Exs. Ic. 7; Barth. N..Am. Ured. 736, 1539; Brenckle, 
Fungi Dak. 63; Clements, Crypt. Form. Colo. 557; Ellis, N. Am. Fungi 1034, 1465; Ellis & Ev. 
Fungi Columb. 1379, 1575, 2143; Ellis & Ev. N. Am. Fungi 2242; Garrett, Fungi Utah. 39, 40, 
134, 212; D. Griff. W. Am. Fungi 272; Sydow, Ured. 1320, 1916. 
33. Micropuccinia Lithophragmae (Holway) Arthur & Jackson. 
Puccinia Lithophragmae Holway, N. Am. Ured. 1:51. 1906. 
O. Pycnia unknown. 
III. Telia chiefly hypophyllous and petiolicolous, round, 0.5-1 mm. across, scattered or 
more commonly closely gregarious, becoming confluent in groups 2-4 mm. in diameter, elongate 
on petioles, soon naked, pulverulent, chestnut-brown, ruptured epidermis conspicuous; telio- 
spores ellipsoid or oblong, 16-20 by 30-44 y, rounded or obtuse above, rounded or narrowed 
below, slightly or not constricted at septum; wall uniformly 1.5—-2 » thick with conic hyaline 
papilla over pores, prominently longitudinally striate-rugose; pedicel colorless, short, de- 
ciduous. 
ON SAXIFRAGACEAE: 
Lithophragma parviflora (Hook.) Nutt. (Tellima parviflora Hook.), Utah. 
E LOCALITY: Wasatch Mountains, Salt Lake County, Utah, on Lithophragma parviflora. 
DrstRIsuTIon: Known only from the type locality. 
ILLUSTRATION: Holway, N. Am. Ured. 1: pl. 21, f. 75a, b. 
Exsiccati: Garrett, Fungi Utah. 137. 
34. Micropuccinia Heterisiae (H. S. Jackson) Arth. & Jackson; 
Arth. Bull. Torrey Club 48: 41. 1921. 
eae aspera Dietel & Holway; Arth. Bull. Torrey Club 29: 230. 1902. Not P. aspera Bon, 
Dasyspora aspera Arth. Résult. Sci. Congr. Bot. Vienne 346. 1906. 
Puccinia Heterisiae H. S. Jackson; Arth. Bull. Torrey Club 47:471. 1920. 
O. Pycnia unknown, probably not formed. 
Ill. Telia amphigenous, round, large, 0.5-2 mm. across, early naked, pulverulent, chest- 
nut-brown, ruptured epidermis conspicuous; teliospores somewhat irregularly ellipsoid, oblong 
or clavate, 16-23 by 32-45 », rounded or rarely obtuse above, rounded or narrowed below, 
not or very slightly constricted at septum; wall dark cinnamon-brown, 1.5-2.5 thick, scarcely 
thickened at apex but pore of upper cell covered by sub-hyaline papilla, closely and irregularly 
verrucose; pedicel colorless, short, as long as spore, or more commonly deciduous. 
ON SAXIFRAGACEAE: 
Heterisia Mertensiana (Bong.) Small (Saxifraga Mertensiana Bong.), Montana, Washington, 
Typr Locatity: Mt. Paddo [Mt. Adams], Washington, on Saxifraga Mertensiana, 
DistRIBUTION: Northern Montana to central Washington. 
ILLUSTRATION: Holway, N. Am. Ured. 1: pl. 19, f. 71a, 6. 
Exsiccatt: Barth. N. Am. Ured. 619. 
35. Micropuccinia turrita (Arth.) Arth. & Jackson; Arth. 
Bull. Torrey Club 48: 42. 1921. 
Puccinia turrita Arth. Bull. Torrey Club 29: 230. 1902 
Dasyspore turrita Arth. Résult. Sci. Congr. Bot. Vienne 347. 1906. 
O. Pycnia unknown. 
III. Telia amphigenous, roundish, 0.5-1 mm. across, early naked, chestnut-brown, pul- 
verulent, ruptured epidermis conspicuous; teliospores ellipsoid or oblong, 20-24 by 36-45 z, 
rounded or obtuse above, rounded below, slightly constricted at septum; wall chestnut- 
brown, 1.5~2.5 « thick, thickened at apex by sub-hyaline umbo to 7 py, coarsely and irregularly 
tuberculate, especially at apex, the pore of lower cell variously placed from near septum to 
near pedicel; pedicel colorless, very short. 
ON SAXIFRAGACEAE: 
Leptasea austromontana (Wieg.) Small (Saxifraga austromontana Small, S. bronchialis 
Pursh), Colorado, Utah. 
