sequent trompe dans le specimen envoye a Berkeley. Je crus ceci a 

 moitie mais je n'etais pas entierement rassure. 



Et voici que mon ami Romell vient me troubler de nouveau. II 

 trouve dans la Suede du Nord une plante qui correspond absolument 

 a la description de Merulius himantioides de Fries; couleur lilas, "bom- 

 bycinus," et qui a les memes spores que le specimen de Kew. Je ne 

 saurais nier pareil temoignage. Romell a trouve la veritable Meru- 

 lius himantioides. Mais me voici au meme point qu'en commencant : 

 je n'ai aucun nom pour mon "bombycina" commun, plante trouvee a 

 Upsala. 



L'ete dernier a Ferns jo j'appris a connaitre Poria bombycina 

 sans question. Elle correspond absolument a la description de Fries 

 et a son specimen a Upsala. Dans les trois derniers musees que 

 j'ai visite il y a 14 specimens etiquettes "Poria bombycina Fr." Dans 

 toute la quantite tin seul specimen est correctement determine et il 

 venait de Suede, et probablement de Fries. D'autres out evidcm- 

 ment eu leurs soucis de meme que tnoi. 



THE NIDULARIACEAE AT BERLIN. 



At the date of my previous visit to Berlin I had not studied the 

 Nidulariaceae. There are a few historic specimens there. 



Ehrenberg's type of Cyathus globosus. It is a Nidularia, and in 

 my opinion there is but one (similar) species in Europe, viz: Nidularia 

 pisiformis. Also at Berlin are good collections of Nidularia confluens, 

 which for me is only a caespitose form of the same thing. 



The type of "Cyathus niveo-tomentosus" from California, proves 

 to be the rare genus Nidula. In fact it is the same as Nidula micro- 

 carpa and an earlier specific name for it. As Miss White did good 

 generic work in establishing the genus Nidula, I accept her work and 

 her names for this genus, and I trust she will appreciate that if I 

 juggled her names as she has juggled others I would call the plant 

 "Nidula niveo-tomentosa (Hennings) Lloyd." 



In a cover labeled "Cyathus scutellaris, Roth." is an old specimen 

 so-labeled in a German handwriting. I do not know that it has any 

 historic value, but if it has, then the species is a synonym for 

 Crucibulum vulgare. 



Dr. Hennings made three collections of Cyathus stercoreus at 

 Berlin. It is a rare plant in Europe, but Dr. Hennings was a good 

 hunter. 



Cyathus sulcatus, discovered to be a new species by Kalchbrenner, 

 is Cyathus Poeppigii, the most common species of warm countries. 

 These specimens have spores 28 x 40 mic. 



The original exsiccatae containing "Cyathus plicatulus Mss., Cuba, 

 Poeppig" are also at Berlin. It is on these exsiccatae that Tulasne 

 based his Cyathus Poeppigii. A spore measures 32 x 44, As it has 

 proved to be such a common species in all tropical countries, it is 

 doubly unfortunate that Tulasne changed the very suitable name pli- 

 catulus to the uncouth name "Poeppigii." 



455 



