Kauffman: The Genus Gomphidius 121 



others agree that it is more or less umbonate; G. subroseus 

 has a rounded pileus from the beginning and later becomes plane 

 to depressed. After the specimens were dried they turned some- 

 what blackish, but when fresh this tendency to blacken — so 

 noticeable a characteristic in some species — is very slight in this 

 western species. From G. flavipes it is readily distinguished by 

 its smaller spores, and from G. maculahis by the veil on the stem. 



Gomphidius oregonensis Peck (emended). 



Pileus 5-10 cm. broad, at first convex, obtuse, becoming plane, 

 glutinous from the universal veil, livid flesh-colored when fresh, 

 becoming black-spotted in age and blackish when dried, glabrous, 

 even; margin at first incurved. Gills short-decurrent, close to 

 subdistant, gray when partly mature, then blackish. Stem 3-8 

 cm. long, subequal or tapering downwards, rather stout, 8-15 (25) 

 mm. thick, floccose-fibrillose, citron-yellow almost to the apex, 

 sheathed in part by the glutinous veil which sometimes terminates 

 in a glutinous ring near the apex, yellow within at the base, 

 surface becoming black-spotted when handled. Odor and taste 

 mild. Spores narrow, elongated-ellipsoid, 10-13 x 3.5-4.5 /x, 

 smooth, tinged smoky. Cystidia few, subcylindrical, 100-125 

 X 15-18 At. 



Description drawn from fresh plants collected at Lake Cush- 

 man, Washington, 1915, by C. H. Kaufi^man. 



This has much the habit and stature of G. glutinosus, but is 

 definitely distinct by its relatively small spores, and the some- 

 what difi"erent colors when fresh. The glutinous veil is quite 

 thick on the pileus and especially so on the incurved margin of 

 the young fruit-body. It is reported from all the Pacific coast 

 states. 



This species was incompletely described by Dr. Peck, who 

 apparently drew his description from dried plants. Few collec- 

 tions are in the eastern herbaria that I examined. The specimens 

 from California, distributed under this name by C. F. Baker in 

 "Pacific Coast Fungi, No. 155,'' is not a. Gomphidius , but prob- 

 ably a Paxillus with globose spores — at least this is true of the 

 copy in the Atkinson herbarium. On the printed label of this 

 number. Baker states that the gills are phosphorescent, a state- 

 ment which is therefore not dependable in its application to G. 

 oregonensis (9). 



