Murrill: Polvporaceae of North America 337 



Boletus umbellatus Pers. Syn. 519. 1801. 

 Polyporus umbellatus Fr. Syst. 1 : 354. 1821. 

 Cladomeris umbellata Quel. Enchiridion, 167. 1886. 

 Cladomeris ramosissima Murrill, Jour. Myc. 9 : 95. 1903. 



This species closely resembles G. frondosa in size, habit and 

 general structure, but the pileoli are centrally attached and circular 

 in form instead of dimidiate and spatulate. It is likewise much 

 rarer than G. frondosa both in this country and in Europe. Per- 

 soon's name seems a very appropriate one, but it is antedated by 

 that of Scopoli. Quelet used this species in establishing his genus 

 Cladomeris, a synonym of Grifola. In America, the plant is 

 reported but rarely. Atkinson found it at Ithaca and refers to 

 it in his Studies of American Fungi. Specimens are at hand 

 from Pennsylvania, Everhart ; Connecticut, Underwood & Earle ; 

 and Ohio, Lloyd; the last accompanied by a fine protogravure of 

 the entire living plant. 



5. Grifola Berkeleyi (Fr.) 



Polyporus Berkeleyi Fr. Nov. Symb. 56. 185 1. 

 Polyporus subgiganteus Berk. & Curt. Grevillea, I : 49. 1872. 

 Polyporus Bcatici Peck, Rept. N. Y. State Mus. Nat. Hist. 30 : 36. 

 1878. 



This species was described from a single pileolus sent to Fries 

 from Curtis' North Carolina collections. It fully warrants the ex- 

 pression used by Fries in describing it : " Nobilissimus inter omnes 

 mihi cognitos Polyporos." I have seen plants two feet in width 

 and over a foot high, with several lobes six to nine inches in 

 diameter. They usually grow under oak trees, often between the 

 enlarged bases of the main roots, and are in close connection with 

 some supply of humus, either from buried wood or very rich leaf- 

 mould. The surface of the pileus is light yellowish-brown, darker 

 toward the center, the tubes irregular, light yellowish-brown, 

 fragile and somewhat toothed. It is easily distinguished from its 

 American allies by the size, color and breadth of its lobes. Poly- 

 porus Beatici Peck and Polyporus subgiganteus B. & C. are not 

 specifically distinct. The former was collected in Maryland and 

 well described in manuscript by Miss Banning ; the latter is rep- 

 resented at Kew by a single pileolus collected by Wright in Con- 

 necticut. 



