,,,, THE AGARICACEAE OF MICHIGAN 



these, e. g., G. pellucida Fr., G. stagnina Fr. and G. paludosa Fr., are 

 now placed in the genus Tubaria, because of their decurrent or 

 broadly adnate gilis. G. rufipes Pk. seems at present the only 

 species of this third section likely to be found within our limits. 



Al.nut 24 species of Galera have been reported or newly described 

 for the United States east of the Rocky Mountains. Some of these 

 u ill probably be found to be synonyms. Several unnamed species 

 are included below whose identity is not established and which as yet 

 seem to be distinct from the others. This genus needs consider- 

 ably more microscopic study in order to place its species on a firm 

 basis. Special pains were taken to obtain material throughout the 

 course of this study but a comparatively small number of the 

 described American species came to hand. See Plate XCVII for 

 habit. 



Key to the Species 



(A) Edge of gills provided with microscopic, capitate, sterile cells. 

 (Growing on dung, or on the soil among grass of manured lawns, 

 gardens, fields and pastures.) 

 (a) Stem long, rooting below the enlarged base; primarily on dung- 

 hills. 520. G. antipus Lasch. 

 (aa) Stem without root-like prolongation. 



(b) Stem bulbous-enlarged at base; gills narrow; on dung-hills. 



522. G. bulbifera sp. nov. 

 (bb) Stem equal, 

 (c) Gills very broad, almost free, ferruginous; plants large, very 



fragile; rare. G. ovalis Fr. 

 (cc) Gills narrow to medium broad. 



(d) Stem striatulate and pubescent; spores 10-12x6-7 micr. 



523. G. pubescens Gill, 

 (dd) Stem not markedly striatulate. 

 (e) Spores small, 7-8.5 x 4-5 micr., pileus soft and very fragile, 



finally expanded. 527. G. teneroides Pk. 

 (ee) Spores 10 micr. or more in length. 



(f) Pileus markedly cylindric-conical, longer than wide, 



pale isabelline. 521. G. lateritia Fr. 

 (ff) Pileus not narrowed-conical. 



(g) On cow-dung; spores 15-18x9-10 micr; pileus not 



striatulate when moist. 524. G. sp. 

 (gg) In grassy places, lawns, etc. 



(h) Stem tough, filiform; spores 9-12x6-7 micr. 528. 



G. capillaripes Pk. 

 (hh) Stem fragile. 



(i) Gills crisped and interveined. 526. G. crispa 



Longyear. 

 (ii) Gills not crisped; very common on lawns. 525. G. 

 tenera Fr. 

 (AA) Edge of gills with sterile cells of a different form. (Growing 

 attached to mosses, grass, sedges, etc., in moist places.) 

 (a) Stem bluish to greenish-gray; on mosses in swamps. 529. G. 



cyanopes sp. nov. 

 (aa) Stem whitish or pallid, 

 (b) Pileus sulcate, convex; gills narrow; on grass. 530. G. plica- 



tella Pk. 

 (bb) Pileus even or striatulate when moist; gills broad. 



