Helotium 143 



Fungi 2632 (as Helotium fumosum) ; Clements, Crypt. Form. 

 Colo. 77; Brenckle, Fungi Dak. 537; Shear, N. Y. Fungi 325. 



A form "graminicola' is distributed by Roumeguere, Fungi 

 Selecti Exsiccati 7158, and ascribed to Lambotte (Mem. Soc. 

 Sci. Liege 14: 310. 1888.) This would be Helotium cyathoi- 

 deum f. graminicola. 



49. Helotium consanguineum Ellis & Ev. Fungi Columb. 1220. 

 1897. 



Apothecia minute, about .5 mm. in diameter, thickly gre- 

 garious, often several confluent, subsessile, yellow; hymenium 

 plane or nearly so, bright lemon-yellow, asci clavate, reaching a 

 length of 45 ^x and a diameter of 6 /x; spores fusoid, indistinct, 

 about 2 X 6-7 ;u; paraphyses filiform. 



On old stems of Tephrosia virginiana. 



Type locality: Newfield, New Jersey. 



Distribution: Known only from the type locality. 



Exsiccati: Ellis & Ev. Fungi Columb. 1220. 



Two collections of this species are in the herbarium of The 

 New York Botanical Garden, one collected in February and 

 one in September, 1879. While distributed in exsiccati the 

 species was not previously published so far as we can find. 



50. Helotium rhizicola Seaver, sp. nov. (Plate 106.) 



Apothecia thickly gregarious, short-stipitate, or nearly sessile, 

 yellowish, or with a tinge of salmon when moist, becoming shallow 

 cup-shaped, or nearly discoid, pale yellowish-white, 1-2 mm. in 

 diameter; hymenium nearly plane, yellowish, or with a tinge of 

 salmon; stems whitish, often very short and again several mm. 

 in length depending upon the position of the substratum; asci 

 clavate, reaching a length of 90 100 m and a diameter of 6-7 ju, 

 8-spored; spores ellipsoid, or fusoid, 3-4 X 7-10 ju, granular 

 within and often with a small oil-drop or group of oil-drops at 

 either end; paraphyses filiform, about 2-3 /x in diameter at 

 their apices. 



Apotheciis sessilis vel subsessilis, 1-1.5 mm. diam., extus pilis brunneis 

 vestitis; ascis clavatis, 5-6 X 150 m, 8-sporis; sporis fusoideis, 4 X 13-15 /u, 

 paraphysibus, clavatis, 4 fx diam. 



On exposed or partially submerged roots and basal stems of 

 Polygonum virginianum and Collinsonia canadensis. 

 Type locality: The New York Botanical Garden. 



