Part 5, 1920] AECIDIACEAE 395 
pact, dark chestnut-brown, ruptured epidermis inconspicuous; teliospores ellipsoid or obovoid, 
14-27 by 23-50 u, rounded or somewhat narrowed at one or both ends, somewhat variable 
upon different hosts, usually somewhat constricted at septum; wall cinnamon- or chestnut- 
brown, 1.5-3 u thick, occasionally up to 4x, thicker above, 4-12 y, sometimes finely and in- 
conspicuously verrucose; pedicel pale, rather fragile, usually broken away, but sometimes 
twice the length of spore. 
This species agrees morphologically with Nigredo plumbaria (Peck) Arth., except in the 
possession of two-celled teliospores, and the two should eventually be united under one name. 
ON ONAGRACEAE: 
Boisduvalia densiflora (Lindl.) S. Wats., California. 
Boisduvalia densiflora imbricata Greene, California. 
Boisduvalia glabella (Nutt.) Walp., Idaho, Nevada, Oregon. 
Boisduvalia salicina (Nutt.) Rydb., Idaho, Oregon, Washington. 
Boisduvalia sparsiflora A. Heller, California. 
Boisduvalia stricta (A. Gray) Greene (B. Torreyi S. Wats.), Oregon. 
Chameenerion latifolium (L.) Sweet (Epilobium latifolium ¥,.), Alaska. 
Chylisma cardiophylla (Torr.) Small (Oenothera cardiophylla Torr.), California. 
Chylisma hirta A. Nelson, Nevada. 
Chylisma scapoidea seorsa A. Nelson, Idaho. 
Clarkia amoena (1ehm.) Nelson & Machr. (Godetia amoena G. Don), California, Oregon. 
Clarkia biloba (Durand) Nelson & Macbr. (Godetia biloba S. Wats.), California. 
Clarkia elegans Dougl. (Phaeostoma elegans A. Nelson), California. 
Clarkia epilobioides (Nutt.) Nelson & Macbr. (Godetia epilobioides S. Wats.), Nevada, 
Washington. 
Clarkia pulchelia Pursh, Idaho, Oregon, Washington. 
Clarkia rhomboidea Dougl. (Phaeostoma rhomboidea A. Nelson), California, Washington. 
Clarkia superba Nelson & Macbr. (Godetia grandiflora Lindl.), California. 
Epilobium adenocaulon Hausskn., Montana, New Mexico, Washington. 
Epilobium americanum Hausskn, Idaho, Washington. 
Epilobium Bongardi Hausskn, Alaska. 
Epilobium clavatum Trel., Montana. 
Epilobium franciscanum Barbey, California. 
Epilobium gtandulosum Lehm., Alaska. 
Epilobium minutum Lindi., Oregon; British Columbia. 
Epilobium paniculatum Nutt., California, Colorado, Idaho, Montana, Nevada, North 
Dakota, Oregon, South Dakota, Utah, Washington, Wyoming. 
Epilobium sp., Saskatchewan. 
Eulobus californicus Nutt., California. 
Gayophytum caesium T. & G., Idaho, Nevada, Utah, Washington, Wyoming. 
Gayophytum diffusum T. & G., California, Idaho, Utah. 
Gayophyium Helleri-Rydb., Idaho. 
Gayophytum lasiospermum Greene, Utah. 
Gayophytum Nuttallit T. & G:, Idaho. 
Gayophytum pumilum S. Wats., California, Idaho. 
Gayophytum racemosum T. & G., Arizona, Colorado, Idaho. : : 
Gayophytum ramosissimum T. & G. (G. intermedium Rydb.), California, Colorado, Idaho, 
Montana, New Mexico, Oregon, Utah, Wyoming. 
Oenothera strigosa (Rydb.) Mackenzie & Bush, Montana. _ 
Sphaerostigma alyssoides (H. & A.) Walp. (Oenothera alyssoides H. & A.), Idaho. 
Sphaerostigma andinum (Nutt.) Walp. (Oenothera andina Nutt.), Idaho, Washington, 
Sphaerostigma bistorta (Nutt.) Walp. (Oenothera bistorta Nutt.), California. ; 
Sphaerostigma Boothii (Dougl.) Walp. (Oenothera Boothii Dougl.), Oregon, Washington. 
Sphaerostigma contortum (Dougl.) Walp. (Oenothera contorta Dougl.), California, Washington. 
Sphaerostigma decorticans (H. & A.) Small (Oenothera gauraefolia T. & G.), California. 
Sphaerostigma dentatum (Cav.) Walp. (Oenothera dentata Cav.), Oregon. 
Sphaerostigma hirtellum (Greene) Small (Oenothera hirtella Greene), California. : . 
Sphaerostigma micranthum (Hornem.) Walp. (Oenothera micrantha Hornem.), California. 
Sphaerostigma pubens (S. Wats.) Rydb. (Oenothera strigulosa pubens S. Wats.), California. 
Sphaerostigma spirale (Lehm.) Walp. (Oenothere spiralis Hook.), California. 
Sphaerostigma utahense Small, Utah. . tate . ; 
Sphaerostigma Veitchianum (Hook.) Small (Oenothera bistorta Veitchiana Hook.), California. 
Sphaerostigma viridescens (Lehm.) Walp. (Oenothera viridescens Lehm.), California. 
Papal ae Petar : 
Taraxia brevi, a Nutt., Montana. . . 
Taraxia dag ha hel. (H. & A.) Raim. (Oenothera graciliflora H. & A.), California. 
Taraxia longiflora Nutt. (Oenothera Nuttallii T. & G.), Nevada. 
Taraxia ovata (Nutt.) Small (Oenothera ovata Nutt.), California. 
Taraxia subacaulis (Pursh) Rydb. (T. heterantha Small, Ocenothera heterantha Nutt.), Col- 
orado, Idaho, Montana, Nevada, Utah, Wyoming. 
Zauschneria californica Presl, California. 
Zauschneria Gerrettit A. Nelson, Utah. 
Tyre LOCALITY: France, on Epilobium teiragonum. 
DistriurTion: From the western part of the Dakotas westward to the coast, and from Alaska 
to New Mexico and California; also in Europe, Asia, Australia, and South America. 
