Clavarias of the United States and Canada 39 



stantly whitish, but later observations by Cotton show that this is 

 not always the case (Trans. Brit. Myc. Soc. 3: 30. 1908. Also 

 6: 191. 1919). It is significant that C. helveola is not recog- 

 nized in England by Cotton and Wakefield. Cotton refers to a 

 plant he has met with which he thought to be the one often labelled 

 C. helveola in herbaria, or by some writers incorrectly taken to be 

 C. inaequalis (Trans. Brit. Myc. Soc. 2: 165. 1908), but he later 

 refers his plant to C. luteo-alba (Trans. Brit. Myc. Soc. 3: 30. 

 1908). It seems hardly possible that a species not at all rare in 

 both the northern and southern states should be unrepresented in 

 England. Maire reports C. luteo-alba from France and gives his 

 own description (Bull. Soc. Bot. Fr. 26: 196. 1910). 



Clavaria incarnata Weinm. may be the same as the flesh-col- 

 ored form of this (our No. 2788) as a collection so determined 

 from T. M. Fries (Sweden) in the Curtis Herbarium has similar 

 spores, about 3.5 x 6[x. The species is, however, said to be pur- 

 plish within. It is not represented in the Fries Herbarium at 

 Upsala. There is also a collection under this name in the Curtis 

 Herbarium from New Jersey (Ellis) that has the same appear- 

 ance, but we could not get good spores from it. Clavaria rosea is 

 equally doubtful, but see notes under that species. We have a good 

 collection of a plant from Upsala sent us by Romell, determined 

 (probably by von Post) as C. purpurea, but which in the dry state 

 is like C. helveola. The spores are like those of our plants, 3.7-4 x 

 6.5-7.5fji. There seems to be no reasonable doubt that C. citrina Q. 

 is also the same. The greenish base and the pip-shaped spores of 

 about the same length, while they agree with this, exclude all other 

 species that are at all near. From the description C. Schroeteri 

 P. Henn. (Verh. Bot. Ver. Prov. Brandenburg 37: 26. 1895), 

 which is the same as C. compressa Schroeter, strongly suggests 

 an antlered form of C. helveola. Clavaria Daigremontiana Boud. 

 (Bull. Soc. Myc. Fr. 33: 10, pi. 1, fig. 4. 1917) is like C. helveola 

 in size, shape and color but is sulcate with numerous furrows and 

 has spores 3-3.5 x 5-6tx. 



Illustrations: Boudier. Icon. Myc. 1 : pi. 175. 



Cotton. Trans. Brit. Myc. Soc. 3: pi. 11, fig. C. (Spores, as C. luteo- 

 alba). 1909. 

 Rea. As cited above. 

 Quelet. As cited above (as C. citrina). 



