20 The Botanical Gazette. [January, 



ated with Vuillemin's "A/curia astcrigma" must also be added 

 to the list. Rhopalomyccs tervinus Cooke, as distributed in 

 Ellis N. A. Fungi, No. f>58, by Ravenel, and therefore pre- 

 sumably authentic, is identical with the common form on 

 dung, and the diagnosis in Grevillea also mentions no point 

 of difference. Whether O. elegans Preuss may not be the 

 same, must necessarily remain in doubt, although the figures 

 and description in Sturm's Flora apply quite well to the pres- 

 ent species, and are sufficiently definite at least to distinguish 

 it with certainty from 0. glomcrulosum. 



Rhopalomyces Corda. 



RHOPALOMYCKS ELEdANS Corda.— Plate III, figs. 1-2. 



Rhopalomyces elegans Corda Prachtflora, p. 3, Taf. 2. Anleit. z. Stud. d. 

 MycoL p. LXVI, Taf. B. 20, figs. 1-3. Fresenius Beitrage z. Mycol. I, p. 19. 

 lat. ill, hgs. 9-15. Bonorden Handbuch d. Allg. Mycol, p. 113, Taf. IX, 



W 



fig- 184. 

 Haplo 

 V, fig. 5 



Sterile hyphae creeping, much branched, very rarely septate, 

 3-4 fx m diam. Fertile hyphae erect, more or less gregari- 

 ous, colorless or slightly tinted, supported by rhizoids at the 

 base which is usually slightly swollen, nearly cylindrical or 

 tapering towards the apex, 1. 5-0. 75 mm. high, 18 /a in 

 diam. Head nearly spherical, usually distinctly areolate, 

 o0-S0 fx ln diam. Spores about 100 in number, dark-brown, 



ovoid to sub-cylindrical, slightly pointed at the base. 35-55 

 Xll-22/i. 



On vegetable and animal matter of various kinds; bones, 

 dung of animals, potatoes, squash rind, etc. Connecticut. 



This well known species has occurred very frequently at 

 New Haven on a variety of substances, although it is cultiva- 

 ted with difficulty, and I have been unable to induce the spores 

 to germinate even in nutrient solutions. The spores varv con- 

 siderably in size and shape and are usually nearly oval or long 

 oval, seldom presenting the very elongate almost cvlindrical 

 form figured by Corda. 



The supposed acroconidia described by Van Tieghem and 

 resembling the similar productions of Morthierella and Svn- 

 cephalis I have never seen. 



Rhopai.OMYCES CUCURHITARLM Berk. & Raw 



Rkopalomyces cuatrbitarum Berkeley & Ra%-enel, Grevillea, Vol. Ill, p. 109. 



"Hyalinus; floccis inarticulatis; capitulis globosis echinu- 

 latis: spons obovatis ovatisque." 



