Parks : Notes on California Fungi 



19 



wide range of species found in close proximity, others may, in 

 searching for such forms, well pay close attention to such places. 



How well I was repaid for this observation was shown on April 

 17, when I was again in the Guadaloupe district. I found some 

 sixty odd specimens of Tuberales, including Genea, Hydnotrya, 

 four species of Tuber, and some others not as yet identified as to 

 species. The one remarkable feature of these tubers was that 

 there were twenty-five of the brown ones found on March 31. It 

 now began to appear that this was not Tuber candidum. I found 

 it in many places during the next two months, and a large amount 

 of material is on hand for the specialist to work over. 



Tuber candidum was not found until late in May. The two 

 species are very much alike in size, shape, and color, but my 

 brown tuber is of a solid brown, easily distinguished from T. can- 

 didum, which has an almost pinkish cast. Both are slightly 

 cracked in radiating lines, with solid, white meat, very sweet and 

 nutty to the taste, but having no particular aroma. 



Much additional material was added this season, but nothing 

 like the quantities found last year, although the brown tuber has 

 not been seen. Some very puzzling forms have been found, but 

 not sufficient to be of much value. Two, however, are worth 

 mentioning. One, a single specimen previously reported only 

 from Placerville by Dr. Harkness-; the other apparently a new 

 form of Hydnocystis, since Dr. Setchell pronounces it not H. 

 Calif ornica and this is the only species referred to as Calif ornian 

 by Dr. Gilkey. 



On April 15, 1917, I was making an effort to secure more Gau- 

 tiera with a peridium, and toward the close of the day I had 

 worked into the old tangle of manzanita, where I secured a large 

 collection of a white fungus that seemed upon examination to be 

 what I wanted. It proved, however, to be a species of Hydnan- 

 gium, and new to Dr. Setchell. Whether or not it is a described 

 species has not yet been determined. 



Another genus not very well known has proved of exceptional 

 interest this year, and this is Hysterangium. During the season 

 of 191 7 I came upon scattered plants of a single species, with a 

 white peridium and a very tough, gristly interior. This is a 

 verdigris-green-spored species with a most offensive smell. Once 



