PODOSPHAERA 39 



■ 



in Berkeley's Herbarium at Kew, sent to that author by Lcvcille 

 himself. P. SchlecJiicndaHi has apparently disappeared since its 

 discovery in 185 I ; I have seen no other example than the one 

 mentioned above, and it is very probable that the Kew specimen 

 is the only one in existence. 



Quite lately (1897) Speschnew (3 38)' has recorded P. Schlcch- 

 icndalii as occurring, rarely, on the willows of the islands of R. 

 Alazan, Transcaucasia. If the identification is correct, the reap- 

 pearance of this long-lost species in so distant a locality is very 



interesting. 



Leveille (214, p. 137), found the original species at Neuilly, 

 near Paris, on the leaves of Salix alba and S. vhninalis, and in his 

 description makes the following observations : " Cette espcce, qui 

 n'a pas encore etc signalee, est une des plus remarquables et des 

 plus faciles a reconnaitre. Ses appendicules,. au nombre de huit 

 ou dix, ont de dix a onze fois la longueur du diametre des concep- 

 tacles, et leur extremite presente des rameaux filiforme contournes 

 en vrille. Cette extremite est assez difficile a voir ; il faut beau- 

 coup de precautions pour la detacher, sans la briser, des polls qui 

 recouvrent la face inferieure des feuilles." 



3. P. BiuxciNATA Cooke & Peck [Fig. 98] 

 P. biiincinata Cooke & Peck, Journ. of Bot. i: 1 1. 1872 ; Peck, 



Reg. Rep. 25 : 94. 1873 ; Sacc. Syll. Fung. 1:3- 1882 ; Atkins. 

 Journ. Elisha Mitch. Sci. Soc. 7 : 69. 1891 ; Burr, in EU. and 

 Everh. N. Am. Pyren. 22. 1892. 



Exsicc: de ThQm. Myc. Univ. 2050; Ellis, N. Amcr. Fung. 

 1326; Rab.-Wint. Fung. Eur. 3540; *Seym. and Earle, Econ. 

 Fung. 135 ; *E11. and Everh. Fung. Columb. 509. 



Amphigenous ; mycelium persistent, arachnoid and effused, or 

 evanescent ; perithecia scattered, or often densely gregarious, sub- 

 globose, 5 5-7 2 /i in diameter; appendages 4-15. equatonally 

 placed and spreading, 3-5 times as long as the diameter of the 

 perithecium, straight or slightly flexuous, aseptate, smooth 

 usually colorless throughout, sometimes with a faint tmgeot 

 browp at the base, narrow (4-5 ." ^^'i^e), thin-walled above, be- 

 coming thick-walled and refractive at base, apex once or rarely 

 twice dichotomously branched, primary -branches long or short, 

 more or less recurved : secondary branches, when present, shorter. 



