This, judging from the collections I have received, is the most 

 common species in Australia. It has a large head and a short stipe, 

 and in general appearance is the same as Tylostoma album (type speci- 

 men at Kew), but it has smooth spores (strongly granular in T. album). 



SPECIMENS IN OUR COLLECTION. 

 Australia, Prof. D. McAlpine (four collections). 



TYLOSTOMA READERII (Plate 82). Peridium uncolored, 

 firm, white. Cortex of the nature of a sand-case, peeling off imper- 

 fectly and persistent at the base. Mouth an elongated, torn opening. 

 Stipe long, dark, rough, but not scaly, frequently with mycelial fibrils. 

 Capillitium hyaline, broad threads. Septa rare with rounded ends and 

 not swollen. Spores 5-6 mic., granular. 



This plant has a general resemblance to Tylostoma granulosum, 

 but has not the same mouth. Specimens collected by F. M. Reader 

 at Casterton, Australia. 



SPECIMENS IN OUR COLLECTION. 

 Australia, F. M. Reader. 



TYLOSTOMA EGRANULOSUM (Plate 82). Peridium uncol- 

 ored, with an irregular, torn aperture. Cortex as a sand-case imper- 

 fectly separating, thickened and persistent at the base. The cortex 

 does not separate as freely as most species but adheres with a "pitted" 

 effect on the peridium. Stipe dark, rigid. Capillitium subhyaline, with 

 rare but swollen nodes. Spores 5-6 mic., granular. 



This plant is very close to Tylostoma granulosum of Europe, but 

 the mouths of these specimens are not furnished with "granular fibrils." 



SPECIMENS IN OUR COLLECTION. 

 Australia, D. McAlpine, F. M. Reader. 



Group 8. 



TYLOSTOMA POCULATUM (Plate 83). Peridium smooth, 

 pale, with a strongly raised, shield-shaped fibrillose mouth. Cortex 

 thick, breaking away perfectly from the peridium which it leaves per- 

 fectly smooth excepting at the base where the thick cortex persists as 

 a kind of cup. Stem pale or slightly colored, sulcate, striate, not scaly, 

 usually thickened below (sometimes strongly) with the mycelial. adnate 

 sand. Capillitium subhyaline, or sometimes distinctly colored, sparingly 

 septate, with slightly thickened septa. Spores 5 mic., smooth. 



This is a most peculiarly marked species, both in its mouth and 

 cortex characters and we know no other species having either of the 

 characters so strongly marked. It occurs chiefly in our western states, 



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