120 C. H. Kauffman 



stuffed, white, but soon "straw-yellow" (Ridg.) or lutescent, 

 2-3 to a millimeter, at first angular with thick dissepiments 

 which become thin and lacerate-serrate or frequently break 

 down in age so as to yield pores of larger size. 



Stem 4-10 cm. long, ventricose-irregular, pointed at base, 

 single, subconfluent or confluent-connate, often compressed or 

 subsulcate, frequently irregular and ascending, sometimes cov- 

 ered above for half the length with abortive pores, white when 

 fresh, becoming "cinnamon-buff" or lutescent when handled or 

 in age, covered with a thin floccosity, flesh spongy and white 

 at first, then compact and sublutescent. Cystidia none. Spores 

 minute, oval, smooth, hyaline, apiculate, 4-5.5 x 3.5-4 //, usually 

 with an oil-drop. Odor slight and then pleasant, or none. 

 Taste mild. 



The herbarium specimens of these collections, now a little 

 over a year in the dried condition, scarcely show tendencies to 

 take on a tinge of reddish. The pilei and stems are now 

 generally sordid "cinnamon-buff, clay-color to tawny-olive" 

 (Ridg.), verging here and there into "pecan-brown" where the 

 rufescent tendency occurs, while the pores vary between "buffy- 

 brown" and "mikado-brown," the extremes matching poorly. 

 My collections from Elkmont, Tenn., also under pines, which I 

 referred to P. confluens, although colored when fresh like the 

 Colorado plants, show now, after five years in the herbarium, 

 their rufescent character strongly. Indeed, the Colorado plants 

 might perhaps be confused with P. ovinus in the dried condition. 



P. ovinus, however, becomes, when dried, blackish-stained as 

 if scorched, and the tubes are not strongly decurrent, the plants 

 are more regular and more truly white when fresh, and the 

 stems are simple. The tubes of the dried specimens of individ- 

 uals of P. confluens, which were picked in a fresh growing con- 

 dition, have a paler, a pinkish-buff color, while those specimens 

 which had matured and were slightly weathered when picked, 

 have the tubes now as described above. 



A comparison of the figures by Fries (Sverig dtl Svamp., PI. 

 24) and by Barla (PI. 29, Figs. 2 and 3) shows that the habit 

 of the Colorado plants is much less complex; the majority have 



