orton: north American species of allodus 183 



slit, tardily naked, blackish; teliospores ellipsoid or oblong, 

 27-34 by 42-58 m; wall blackish when mature, 2.5-3.5 ju thick, 

 rarely thickened at apex up to 5 ix, coarsely and prominently 

 tuberculate; pedicel colorless, up to the length of spore. 



Urediniospores occurring rather commonly in the telia, broadly 

 ellipsoid, 27-35 by 32-42 /x; wall golden yellow to cinnamon- 

 brown, about 1-1.5 M thick, finely verrucose, echinulate, the pores 

 1 2-1 5. scattered. 



On Liliaceae: 



Dipterostemon pauciflorus (Torr.) Rydb. {Brodiaea capitata 



pauciflora Torr.) 

 Type locality: Tumamoc Hill, on grounds of the Desert Botanical 



Laboratory of the Carnegie Institution of Washington, Tucson, 



Arizona, on Dipterostemon pauciflorus. (xA.ltitude 2,700 ft., 



February 26, 1914, no. 5801.) 

 Distribution : Known only from Tumamoc Hill, Tucson, Arizona. 



Note. — Puccinia nodosa E. & H. a long cycle rust on Diptero- 

 stemon capitatus (Benth.) Rydb. from Southern California and 

 Puccinia tumamocensis Arthur, on Dipterostemon pauciflorus, 

 collected from the same locality and at the same time as Allodus 

 Carnegiana, possess teliospores remarkably like those of the last- 

 named species. 



6. Allodus subangulata (Holw.) comb. nov. 



Puccinia subangulata Holw. N. Am. Ured. 1: 25, 1905. 



Aecia amphigenous, crowded in small orbicular groups; aecio- 

 spores 19-25 by 24-30 ix; wall 2-2.5 M thick. 



Telia amphigenous, scattered, oblong, tardily naked, chestnut- 

 brown, ruptured epidermis conspicuous; teliospores broadly ellip- 

 soid, angular, 20-30 by 35-40 /jl, cells often unequal in size and 

 shape; wall dark cinnamon-brown, uniformly 1-1.5 /x thick, finely 

 rugose, with a few prominent longitudinal ridges; pedicel color- 

 less, rarely as long as the spore. 

 On Liliaceae: 



Hooker a pulchella Salisb. {Brodiaea congesta Smith, Dichelo- 

 stemma congestum Kunth.) 

 Type locality: State of Washington, on Brodiaea congesta. 

 Distribution: Northwestern United States. 



7. Allodus Dichelostemmae (D. & H.) comb. nov. 

 Puccinia Dichelostemmae Diet. & Holw. Erythea 3: 78. 1895. 

 Aecia not known. 



