188 ERYTHEA. 



teeth and give the younger heads a very pronounced plumose 

 appearance. Collected but once, in liard gravelly soil along 

 Mad Kiver near the point, at which it is crossed by the Hyam- 

 pum trail. 



Biibiis leucodermis, Dough A peculiar form of this spe- 

 cies was observed in the interior of Trinity County. Leaves 

 small (one to two inches across), but slightly trilobed, the 

 lobes irregularly toothed. 



Sarcodes sangitinea, Torr. A few good specimens were 

 obtained on the eastern slope of South Fork Mountain. 



Crepis monticolor, Coville. Agrees very closely with the 

 plant figured in Contributions from the U. S. Nat. Her- 

 barium, Vol. Ill, Plate XXII, save for the more 

 dense pubescence. Collected but once, near French 

 Gulch, Shasta County. 



Lithospermuni Californicum, Gray. Differs in several 

 respects from the description in the "Botany of California." 

 Collected from the same station as the above. 



Boschnialna atrobilacea, Gray. Of common occurrence 

 on South Fork Mountain and along the Hay Fork River. In 

 all but a single instance found to be parasitic on the roots of 

 Arhufns Menziesii. The exceptional case grew apparently 

 on a species of Arctostaphylos. It produces on the ends of 

 the roots of its host^^hard warty structures which give rise to 

 from one to six floriferous spikes, the latter sometimes at- 

 taining a length of eighteen inches yet seldom rising more 

 than six inches above the surface of the ground, covered with 

 numerous imbricated reddish-brown scales the upper ones 

 each subtending a single flower. Calyx broadly cup-sliaped, 

 regular save for the awl-shaped teeth which vary from one to 

 four in number, in flowers of the same spike and which fol- 

 low no symmetrical arrangement; subtended below by two 

 filiform bracts. Corolla reddish brown, barely two-lobed, 

 the upper lip erect, the lower receding. Stamens and corolla 

 long persistent, the former becoming exserted in fruit. Fruit 

 globose, with four placentse and filled with an abundance of 



