536 NORTH AMERICAN FLORA [VoLumME 7 
Heuchera micrantha Doug!., California, Oregon. 
Heuchera rubescens Torr., Arizona. 
Heuchera villosa Michx., North Carolina. 
Pek euchera sp., Idaho. 
peices Menziesii (Pursh) Raf. (Tolmiea Menziesii T. & G., Heuchera Menziesii Hook.), 
regon. 
Lithophragma affinis A. Gray (Tellima afinis Boland.), California. 
Micranthes arguta (D. Don) Small (Sexifraga arguta D. Don, S. punctata Am. Auth. not 
; L.), Colorado, Idaho, Montana, New Mexico, Utah, Washington. 
Micranthes fragosa (Suks.) Small (Sexifraga fragosa Suks.), Washington. 
Micranthes Nelsoniana (D. Don) Small (Saxifraga Nelsoniana D. Don), Alaska. 
Mitella diphylia L,., lowa, Michigan, New York, Pennsylvania, Wisconsin; Ontario. 
Mitella nuda I,., Maine, Michigan, Montana, New York, Wisconsin; Ontario. 
Ozomelis stauropetala (Piper) Rydb. (Mitella stauropetala Piper), Idaho. 
Pectiantia Breweri (A. Gray) Rydb. (Mitella Breweri A. Gray), California, Oregon, Wash- 
ington; British Columbia. 
Pectiantia ovalis (Greene) Rydb. (Mitella ovalis Greene), Oregon, 
Pectiantia pentandra (Hook.) Rydb. (Mitella pentandra Hook.), Colorado, Idaho, Utah, 
Washington. 
Tellima grandiflora (Pursh) Dougl. (Mitella grandiflora Pursh), Alaska, California, Oregon, 
Washington; British Columbia. 
Tiarella cordifolia 1,., Michigan, New York, Vermont, West Virginia; Ontario, Quebec. 
Tiarella trifoliata L., Alaska, ‘Washington. 
Tiarella unifoliata Hook., Idaho, Montana, Oregon, Washington; British Columbia. 
TYPE LOcaLIty: North Carolina, on Heuchera americana. é 
DrstTRIBUTION: Nearly throughout the United States and Canada; also in Europe. 
ILLUSTRATIONS: Bull. Lab. Nat. Hist. Univ. Iowa 32: pl. 1, f. 5, 6a, b; Holway, N. Am. Ured. 
1: pl. 18, f. 69, pl. 20, f. 74a-f, pl. 21, f. 74g-j; Krypt.-Fl. Brand. Pilze 3: B14; Ured. Schweiz 
22: f.117; Ber. Deuts. Bot. Ges. 9: pl. 3, f. 3, 8-11; Grove, Brit. Rust Fungi f. 160. . 
Exsiccati: Arth. & Holway, Ured. Exs. Ic. 5, 6a, b; Barth. Fungi Columb. 2359, 3171, 4462, 
4965; Barth. N. Am. Ured. 40, 241, 454, 640, 745, 849, 1449, 1450, 1451, 1552, 1553, 1554; Clements, 
Crypt. Form. Colo. 143; Ellis, N. Am. Fungi 1049, 1463, 1464; Ellis & Ev. Fungi Columb. 345, 
1763, 2059; Ellis & Ev. N. Am. Fungi 2233, 2414, 3571; Garrett, Fungi Utah. 58, 108; Sydow, 
Ured. 338, 867, 1917, 1925, 2417. 
32. Micropuccinia curtipes (Howe) Arth. & Jackson, Bull. 
Torrey Club 48:42. 1921. 
Puccinia curtipes Howe, Bull. Torrey Club 5:3. 1874. 
Puccinia striata Cooke, Grevillea 7:3. 1878. 
Puccinia Saxifragae curtipes Dietel, Ber. Deuts. Bot. Ges. 9:40. 1891. 
Dicaeoma curtipes Kuntze, Rev. Gen. 33: 468. 1898. 
Puccinia striatospora Peck, Mycologia 5::71. 1913. 
O. Pycnia unknown, probably not formed. 
Ill. Telia amphigenous, chiefly hypophyllous, round, 0.5-0.8 mm. across, usually con- 
fluent in irregular groups, often elongate when on petioles and veins, usually pulverulent, 
rarely pulvinate in the germinating condition, chestnut-brown, early naked, ruptured epi- 
dermis noticeable; teliospores 16-20 by 26-34 u, broadly ellipsoid or oblong, usually rounded 
above and below, occasionally narrower below, not or slightly constricted at septum; wall 
dark cinnamon-brown, 1-2.5 » thick, with a colorless papilla at apex, 4-7» high, usually 
strongly striate; pedicel colorless, as long as spore, or more commonly short, deciduous. 
ON SAXIFRAGACEAE: 
Heuchera americana L,., South Dakota, Wisconsin. 
Heuchera bracteata (Torr.) Seringe, Colorado, Wyoming. 
Heuchera cylindrica Dougl., Washington. 
Heuchera glabella 'T. & G., Montana, Washington. 
Heuchera hispida Pursh, Nebraska, North Dakota, South Dakota. 
Heuchera ovalifolia Nutt., Alberta. 
Heuchera parvifolia Nutt., Colorado, New Mexico, Utah, Wyoming. 
Heuchera rubescens Torr., Utah. 
Micranthes californica (Greene) Small (Saxifrega californica Greene), California, Oregon. 
Micranthes columbiana (Piper) Small (Saxifraga columbiana Piper), Idaho. 
Micranthes Marshallii (Greene) Small (Saxifraga Marshallii Greene), Oregon. 
Micranthes nivalis (.) Small (Saxifraga nivalis L.), Greenland. 
Micranthes pennsylvanica (L.) Haw. (Saxifraga pennsylvanica L.), Indiana, Minnesota. 
Micranthes virginiensis (Micbx.) Small (Saxifraga virginiensis Michx.), California, New 
Jersey, New York, Ohio, Pennsylvania, West Virginia. 
Ozomelis stauropetala (Piper) Rydb. (Mitella stauropetala Piper), Idaho, Wyoming. 
Ozomelis stenopetala (Piper) Rydb. (Mitella stenopetala Piper, M. trifida S. Wats., not 
Graham), Utah. 
Pectiantia Breweri (A. Gray) Rydb. (Mitella Breweri A. Gray), California. 
Saxifraga debilis Hngelm., Utah. 
Saxifraga rivularis L., Montana; British Columbia. 
