294 University of California Publications in Botany [Vol. 6 



Pseudobalsamiamagnata, var. nigrens (Hk.) comb.nov. 



Plate 30, fig. 33 



BaJsamia nigrens Hk., Proe. Cal. Acad. Sei., 3r(l ser., vol. 1, no. 8 (1899), 

 p. 264. 



Ascocarp black, somewhat depressed globose, coarsely and sharply 

 verrucose ; pseudoparenchymatous cortical tissue divided into two dis- 

 tinct layers, outer cells dark and very thick-walled, inner lighter- 

 colored and thinner-walled, strongly elongated toward center of asco- 

 carp, becoming smaller below but changing rather abruptly to hyphal 

 tissue of subcortex ; venae externae narrow, closely filled with inter- 

 woven hyphae, opening to surface between verrucosities, the hyphae 

 continuing outward as irregular simple hairs found only at external 

 openings of veins. 

 "Beneath Ceanothus, Auburn, Placer Co., Calif., Mav." 



No. 180, Hk. Col. Type of B. nigrens. 



The color, sharply defined verrucosities, very much thickened walls 

 of outer cortex, strongly elongated cells of inner cortex, and narrow 

 completely filled venae externae, easily distinguish this variety from 

 the type of the species. In the exceedingly variable specimens of 

 Psetidoialsamia magnata, however, intermediate forms of all the 

 above characters are found in greater or lesser degree, never so sharp- 

 ly defined as here but sufficiently marked to make a separation of a 

 distinct species in this case unjustifiable. 



Pachjrphloeus, Tul. 



Ascocarp subglobose, with conspicuous basal mycelial tuft ; surface 

 pseudoparenchymatous; venae internae originating from subcortical 

 tissue, either at base of ascocarp and extending to various points of 

 upper side, or at different points of periphery and converging at 

 apex; venae internae separated by venae externae, latter opening at 

 various points of upper side of ascocarp or (usually) at single point 

 (generally at apex), in depression; venae externae lined with hymen- 

 ium, composed of asci and paraphyses in irregular palisade ; asci cylin- 

 drical or club-shaped, 8-spored ; spores globose, acutely or obtusely 

 spinose, regularly seriate or irregularly arranged in ascus. 



Pachyphloeus citriims Berk, et Broome 



Plate 30, fig. 24 



Ann. and Mag. of Nat. Hist., XVIIT, 79. 



FachypMoeus carneus Hk., Proc. Cal. Acad. Sci., 3rd ser., vol. 1, no. 8, 



(1899), p. 268, pi. XLV, figs. 33a-33&. 

 Choiromyces gangliformis Hk. non Vitt., Proc. Cal. Acad. Sci., 3rd ser., vol 



1, no. 8, p. 277. 



