CYATHUS COLENSOI (Plate no). Cups broad, campanulate, 

 5-6 x 6-7, even, smooth, with appressed, fine hairs. Even within. 

 Peridioles about 2 mic., black with thin tunica (?). Cortex thick,. 

 a single layer. Spores varying much as to size and more as to shape. 

 Many elliptical, 8-10x1012 mic. Many subglobose, 9-12 mic. in 

 diameter. 



This species has much the same cups as vernicosus, but smaller 

 peridioles and more globose spores. I saw a number of collections 

 from Australia at Kew, and have received it once. 



SPECIMENS IN OUR COLLECTION. 

 Australia, F. M. Reader. 



CYATHUS MINIMUS (Fig. 18, enlarged 4 times). 

 Cups very small, 4-5 x4 mm., even, smooth. Clothed with 

 subappressed hairs. Even within. Sporangioles small, 

 about i mm., with thin tunica. Cortex thick, 50 mic., but 

 apparently a single layer. Spores elliptical, 10-12 x 18-20 

 mic. 



This little species is known only from the original col- 

 lection, made in China. 



Fig. 18. 



SPECIMENS IN OUR COLLECTION. 

 China, Type from Herbarium. Professor Patouillard. 



CYATHUS PYGMAEUS (Plate no). Cups small 4-4^ x tf/2-4 

 mm., grayish brown, even, smooth, rigid, clothed with appressed 

 hairs. Even within. Peridioles small, about I mm., with thin tunica. 

 Cortex a single layer, about 30 mic., thicker on the lower side of the 

 peridiole. Spores small, ovate, 8-9 x 12-14. 



This little species reaches me from C. V. Piper, Pullman, Wash- 

 ington. It grew attached to twigs in moss. It is close to the pre- 

 ceding, differing chiefly in its spores. It is the only collection of 

 Cyathus I have ever received from the United States that can not 

 be referred (as a form at least) to one of the three common species. 



SPECIMENS IN OUR COLLECTION. 

 Washington, C V. Piper. 



CYATHUS EARLEI (Plate no). Cups campanulate, rigid, 

 7-8 x 6-8 mm., dark, blackish brown. Externally even, scabrous, with 

 short tomentum. Internally smooth or faintly striate (but having: 

 no affinities with the section Encyathus), white, contrasting with the 

 dark exterior. Peridioles covered on the upper side with a silvery, 

 thin tunica. Cortex thick, double, the outer thin, composed of small 

 fibrils. Spores elliptical or slightly oval-elliptical, 12 x 24-32 mic. 



This species in its shape and rigid cups is related to vernicosus,. 

 differing much in color and spores. We have received two collections, 

 one from Cuba, the other from Hawaii. They are the same other- 



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