1 8 The Botanical Gazette. [January. 



spherical to obovoid, very variable in size, more or less dis- 

 tinctly areolate: maximum 45x65//: average 28x35;/. 



Spores oval to elliptical, finely echinulate: average 10x12/^; 

 maximum 18x25/*. 



On cheese and cheesy paper. Massachusetts. 



This species, which made its appearance in company with 

 several Mucors on a laboratory culture, is readily distinguished 

 by its finely echinulate spores and very irregular growth. 

 It resembles O. dichotomum Preuss in the successive branching 

 of the fertile hyphae; but the type is not dichotomous, new 

 heads usually arising by an out-growth from a point below 

 the last head formed as in fig. 8. In some of its irregularities 

 it approaches the conidial form of Hctcrobasidion autwsuiti 

 Kref. previously referred to, especially in the common 

 occurrence of compound proliferation from the fertile heads, 

 either before or after they have produced spores; each 

 proliferation in its turn producing a smaller head and smaller 

 spores as in fig. !). 



I 



Oedoeephalum verticillsituin n. sp.— Plate IV, figs. 12-14 



White, becoming faintly yellowish. Sterile hyphae creep- 

 ing, frequently septate, sub-verticillately branched. Fertile 

 hyphae arising in whorls of from one to five; septate; 4// in 

 diam., tapering very slightly before swelling suddenly into 

 the sporiferous head. Head invariably spherical; very faintly 

 areolate; 20-25// in diam. Spores muriculate, spherical, 

 slightly irregular in outline, 5-7/* in diam. 



On newts dung. E.Tennessee. 



I his delicate species covers the substance on which it 

 grows with an extremely evanescent mycelium; the hyphae 

 running from one projecting point of the substratum to 

 another and producing the fertile branches in the interval. 

 I he latter, therefore, arising in whorls in a usuallv vertical 

 plane, are not always erect, some pointing downwards or out- 

 wards as well as upwards. The species does not appear 

 nearly related to any of the described forms, from all of which 

 it is readily separated by its verticillate habit and spherical 

 muriculate spores. 



O DOCEPHALUM PALI HUM (H. & Br.) Cost. , Plate IV, figs. 2-7. 



Oed*(*pkahm pallidum Costamin Hull. Bot. Soc. d. France, Vol XXXIII. 



P 49 2 - 



J'T vof x n "»"'"/ " erke!e - v * 1Sl 'V*. ,mt> ' Annals and *a«. of Nat. Hist.. 



2a ?>er., Vol \ II, p. 9 6, No. 504, Plate V, tig. 2. 



