Fungi 17 c 



Dated August 17, 1915, at Bernard harbour Mr. Johansen's journal contains 

 this note: "Much rain during the latter part of this month makes quite a few 

 (terrestrial) fungi come out." 



For their certain identification many kinds of agarics require expert study 

 of the fresh specimens with notes on such non-persistent characters as presence 

 or lack of viscidity, differences between the young and mature stages and tests 

 of odour and taste. On the Amdrup Expedition to the East Coast of Greenland 

 Agarics in six genera were collected but, according to Rostrup, the species of 

 only one kind was determinable. 



Captain Fielden and H. C. Hart of the Nares expedition collected twelve 

 agarics which Berkeley regarded as identifiable, namely, Omphalia umbilicata 

 Schaef., 0. umhellifera (L.), 0. sphaerospora Berk.?, Clitopilus undatus Fr., 

 Naucoria Bellotiana Berk., Tubariajurfuracea Fr., T. pellucida (Bull.), Stropharia 

 Fieldeni Berk., Hygrophorus virgineus Fr., H. miniatus Fr., Russula integra Fr., 

 and Cantharellus muscigenus Fr. 



H. G. Simmons on the 2nd Norwegian expedition collected agarics on 

 Ellesmere land which E. Rostrup determined as follows: Mycena pumila (Bull.), 

 Collybia dryophila (Bull.), Tricholoma caelatum (Ft.), Omphalia umbellifera (L.), 

 Hebeloma fastibilis (Fr.), Naucoria f estiva (Fr.), N. melinoides (Fr.), N. nimbosa 

 (Fr.), Galera hypnorum (Batsch.), Psalliota campestris (L.), Ps'. Rodmani (Peck), 

 Psathyrella polaris Rostr., Russulina lutea (Huds.), Cantharellus lobatus (Pers). 



LYCOPERDACEAE. 



Calvatia cretacea (Berk.) Lloyd 



Lycoperdon cretaceum Berk. Journal Linn. Soc. 17: 18, 1878. 



On clay slopes, Herschel island, August 9, 1914. 



On tundra hill slopes, Kay point, Mackenzie river delta, August 17, 1914, 

 J. J. O'Neill. 



On stony tundra, Bernard harbour, August 10, 1915. 



Of the last collection Mr. Johansen writes: "four white specimens growing 

 two together and two others together, white, the interior a dark green mass." 



In some respects this is one of the most interesting fungi collected. Accord- 

 ing to Mr. C. G. Lloyd, to whom I submitted a Kay point specimen for deter- 

 mination, there are only two previous collections on record, one on Bellot, island 

 by Captain Fielden of the Nares expedition in August, 1876, the type specimen, 

 and another by Thore Fries in Lapland in 1910. Mr. Lloyd counts another 

 found in Greenland and described by Ferdinand and Winge as Calvatia arctica 

 which he thinks will prove to be the same species. The fine plate of C. 

 arctica in Meddelelser on Groenland, Band 43, which Mr. Lloyd had not 

 seen, shows that it is not the same species as C. cretacea. 



Berkeley's description (op. cit.): "Sessile, globoso-depressum, pallide 

 fulvum, scabroso-pulveraceum, sursum cretaceum, in areolas rigidas pyramidatas 

 fissum; capillitio fusco; mycelio repente niveo." 



Mr. Lloyd had photographed the type which is at Kew, f. 929 in the above 

 citation, thus making a valuable supplement to Berkeley's imperfect description. 



The material now on hand enables me to complete the description as follows: 

 Peridium sub-globose, 4-5 cm.; the prominent, pyramidal waits of the upper 

 cortex gradually reduced on sides and base to a granulate or even pruinate 

 layer; gleba purplish-biown; sterile base shallow, radicating; spores globose, 

 echinulate, apiculate, average 6.2 /j; capillitium oUve-brown, main lines about 

 12 M thick, branches much smaller, about 6 /i thick. 



This note is a revision of one published by the writer in Mycologia 9: 351, 

 1917. 



50278—2 



