532 



Seaver: Some North Dakota Hypocreales 



Con- 



The species is well marked by the delicate rose color of the sub- 

 iculum and perithecia as well as by spore characters. 



V. Hypocrea 

 Hypocrea citrina (Pers.) Fries. On dead limbs of basswood, 

 especially where the outer bark has been removed. Plants torm 

 a bright lemon-yellow stroma, often several inches in extent on 

 the substratum. The perithecia are seen as little dots over the 

 surface of the stroma. The plants resemble those of the preceding 

 genus but are readily distinguished by the spore characters, 

 siderable quantity of this material has been collected but always 



on the same host. . . 



Hypocrea patella Peck. The stroma in this species is very 

 small as compared with the preceding and not so bnght-colore ■ 

 In the specimens of this species collected, it seems to s * ow a ^ m _ 

 dency to grow on old sphaeriaceous fungi. This has been c 

 pared with specimens identified by Professor Peck. 



Hypocrea Richardsoni Berk. & Mont. Very com ™jV 

 limbs of Populus tremuloides in woods near Fargo. No P el \ ^ 

 have been seen in any of the specimens which have been cxa ^ 

 Although in external appearance the plants resemble a Hyp 

 it is doubtful if they rightfully belong to this genus. ^ 



Hypocrea rufa (Pers.) Fries. The specimens ^ 

 collected in Fargo were small and not fair examples oi v 



but they seem to belong here. 



VI. CORDYCEPS 



) 



/ 



isana jannosa rnes. 'Hal P nase 



On larvae of insects in Fargo woods. Only the com 



Un larvae ot insects in Jfargo woous. v-/»v ^^ { 



of this plant was collected in North Dakota but that occ^ ^ 

 considerable abundance and doubtless the mature frult w ° rte , 



e 



character- 



appeared at the proper season. The conidial phase ^^ ^ 

 ized by the snow-white feather-like growth, with its y ^ 



which springs from larvae that are buried under leaves ^ ^ 

 Cordyceps pistii.lariaeformis Berk. & Broom . boU t 



... . • ,,.» in W00U3 



Xanth 

 ft 



how- 



mature 



