Clavarias of the United States ANn Canada 175 



Peck), and as the spores are identical with those of the type and 

 different from any others, being distinctly smaller than in C. 

 flaccida or C. abietina. Peck says C. pusilla differs from C. tetrag- 

 ona by the terete stem and irregular ramification, but Peck's col- 

 lections labelled C. tetragona are apparently C. crocea. From C. 

 gracilis the present species may be distinguished by the quick 

 change to purple-pink when bruised and by the different spores, 

 which are not only minutely warted but collapse more easily than 

 those of C. gracilis and lack the very distinct oil drop of the latter. 

 As to C. curta we have seen an authentic specimen of this at Kew 

 Gardens determined by Fries. The plants are like C. pusilla and 

 so are the spores, minutely rough, 2.8-3.5 x 4.2-5 [/.. A collection 

 in the Bresadola Herbarium determined by the latter as C. curta is 

 also the same, with spores 2.5-3.5 x 3.8-5[a. There has been much 

 confusion in regard to the identity of C. crisp ula. In his first 

 publication of the species (see above) Fries evidently had a vague 

 idea of his plant, as he refers to both the white and colored figures 

 of Bulliard (pi. 358, figs. A-C) as representing it. Later (Epicr., 

 p. 576) he refers only to the colored figures and gives C. decur- 

 rens as a synonym. Confusion in Fries's mind in regard to the 

 species is still further indicated by plants labelled C. crispula in his 

 herbarium. There are two plants not on wood that have the ap- 

 pearance and spores of C. Kunzei, while one other specimen on 

 wood is exactly like a plant sent us by Romell and determined by 

 him as C. epichnoa and has spores smooth, elliptic, 2.5-3 x S-7\x. 

 Juel (cited under C. cristata) finds that in a plant considered by 

 him to be C. epichnoa (pi. 3, figs. 84-86) the microscopic characters 

 are the same as in the plant he considers C. crispula (pi. 3, figs. 

 91 and 92). Neither of his plants is C. dccurrcns. However, 

 we have received from him a collection labelled C. crispula with a 

 question which is exactly like the present species in the dry state 

 and has the same spores, nearly pip-shaped, minutely rough, 

 2-3 x 3.5-5;/.. Specimens in Persoon's herbarium collected near 

 Paris and determined by him as C. crispula are in good con- 

 dition and are indistinguishable from our collections. The spores 

 are the same, 2.5-4x4.4-6.6^. Clavaria muscigena Pers., which 

 was also regarded by Fries as a synonym, is not represented in the 

 herbarium of Persoon. In the Bresadola Herbarium at Stock- 



