136 



17- 



Stipe cylindrical, base obtuse. 

 Stipe radicating strongly at base. 

 Stipe conspicuously bulbous at base. 



G. teriera (Schaefif. ) Gillet 



G. antipoda (Lasch) Gillet 



G. sphaerobasis ( Post ) Karst. 



Section Bryogenae 

 Stipe white or pallid. 

 Stipe ochraceous, ferruginous, or darker. 

 Pileus rugose-reticulate. 

 Pileus smooth. 



Lamellae narrow ; stipe silky-fibrillose, apex pruinose. 

 Lamellae triangular ; stipe glabrous. 



2. 



4- 



G. i elicitlata Pk. 



3- 



G. bryophila Pk. 



G. aquatilis ( Fr. ) Gillet 



4- 



Pileus cinnamon or chestnut to ochraceous ; stipe 10-15 cm. long. 5. 



Pileus watery-cinnamon ; stipe 4-6 cm. X 2 nlm - &• B^yorum (Pers. ) Sacc. 



Pileus ferruginous-orange ; stipe 2-3 cm. long. 6. 



5. Pileus watery- cinnamon ; veil scarcely developed. G. Sphagnorum (Pers.) Gillet 

 Pileus darker, often chestnut; veil strongly developed. 



G. Sphagnorum velata Pk. 



6. Stipe blackish-brown. 

 Stipe concolorous. 



7. Pileus obtuse or subpapillate. 

 Pileus strongly umbonate. 



Section Plicatellae 

 I. Pileus reddish. 



G. Hypnorum nigripes Pk. 



7- 



G. Hypnorum (Batsch) Gillet 



G. Hypnorum umbonata Pk. 



Pileus silvery-brown. 



Pileus yellow. 



Pileus ochraceous or fuscous. 



Lamellae crowded, narrow. 



Lamellae distant, broad. 



Pileus viscid, pale sordid-fuscous. 



Pileus glabrous, yellow to ochraceous. 



Pileus densely silky tomentose, ochraceous. 



G. lirata (B. & C. ) Sacc. 



G. striatula Clements 



2. 



3- 



G. Jiava Pk. 



G. semilanceata Pk. 



crocospora (B. & C. ) Sacc. 



G.plicat°lla (Pk.) * 



G . pulchra Clements 



Section Eriodermae 

 1. Pileus reddish-tawny ; stipe reddish-brown. G. rufipes Pk. 



( See also Gaiera Sphagnorum velata Pk. and G. tenera pilosella ( Pers. ) Pk. 



AN IMPROVISED HORIZONTAL MICROSCOPE 



By II. M. Richards 



Horizontal microscopes, while very useful pieces of apparatus, 

 may perhaps be regarded as one of the luxuries of a physiolog- 



* Agaricus coprinoides Pk. Reg. Rept. 26 : 59. 1S74. Not Corda. 

 Agaricus plicalellus I'k. Reg. Rept. 29 : 66. 1878. 

 Gaiera coprinoides Pk. Reg. Rept. 46: 69. 1893. 



