(439) 



For the aecia: Malus rivularis (Doug.) Roem., Sorbus occi- 

 dental (Wats.) Greene, S. scopulina Greene. 

 For the telia: unknown, possibly Chamaecyparis nootkatensis . 

 Type locality: Hodag Lake, Vancouver Island, B. C, on 

 Sorbus occidentalis. 



Distribution: Along the Pacific coast of the United States from 

 Alaska southward into Washington. 



3. Gymnosporangium fratemum sp. nov. 



Telia foliicolous, solitary, scattered, oval, 0.8-2 mm. across, 

 pulvinate, chestnut-brown, ruptured epidermis 

 noticeable; teliospores 2-celled, ellipsoid, 16-19X 

 39-48/*, rounded above, narrowed below, slightly 

 icted at the septum, wall cinnamon-brcn 



medium, 1.5-2.5^, thicker above, 



3~5m; pedi 



cylindric, 5-6/i indiam.; pores 2 ir 



each cell, r 



the septum. 





Host plants: 





For the aecia: unknown. 





For the telia: Chamaecypari 



s thyoides 



B.S.P. (Cupressus thyoides L., Chamaecy- 

 paris sphaeroidea Spach.) 



Type collected at Newfield, N. J., on Chamaecyparis thyoides, 

 April, 1880, /. B. Ellis (Ellis & Ev. N. Am. Fungi 14.79— host 

 erroneously determined as Thuja occidentalis). 



Distribution: Small area along the Atlantic coast from Massa- 

 chusetts to New Jersey. 



Exsiccati: Seym. & Earle, Econ. Fungi 244; Ellis, N. Am. Fungi 

 14.79; Roum. Fungi Sel. 4886. 



The form which is here recognized as a species was given sub- 

 specific rank in 1885 by Farlow in Ellis, N. Am. Fungi 1479, 

 under the name G. biseptatumfoliicolum, without any accompanying 

 description. The writer has made several unsuccessful attempts 

 to cultivate this form and culture evidence is therefore lacking to 

 support its standing as a distinct species. Its habit and mor- 

 phological characters are however so distinct from G. Botryapites 

 (biseptatum), the only species with which it appears to be at all 

 allied, that the writer feels justified in recognizing it as a good 

 species. 



