AMERICAN* FORMS. 



TYLOSTOMA SIMULANS (Plate 79). Peridium pale, castaneous color, 

 with mouth unicolorous. Cortex thin, separating imperfectly. Stem slender, 

 pale, slightly striate and sometimes slightly scaly. Capillitium rarely septate with 

 thickened nodes. Spores 5 mic., asperate. 



This is the nearest approach we have in America to Tylostoma maminosum 

 of Kurope, and it is a rare plant. On comparison it differs in its unicolorous 

 and more deeply colored peridium, more adnate cortex and paler stipe. 



SPECIMENS IN OUR COLLECTION. 



Ohio (Granvi'lK-). \V. W. Stockherger ; (Sandusky), H. C. Beardslee. 

 Tf.ras, \V. II. Long. 



TYLOSTOMA RUFUM (Plate 79). Peridium deeply colored, reddish 

 brown, with a circular, tubular, strongly protruding mouth. Cortex thin, adher- 

 ing, but separating perfectly from old specimens, leaving the peridium perfectly 

 smooth. Stem deeply colored, covered with short scales, internally white with 

 central fibrils. Capillitium faintly colored, not swollen at the septa. Spores 5 mic., 

 granulose. 



This species has been. I am sure, usually determined as Tylostoma mammo- 

 sum in the United States. Miss White's Fig. 1. Plate 31. is" very good of it. 

 It differs from Tylostoma maminosum of Europe in its more deeply and uni- 

 formly colored and larger peridium, its short, thick, scaly stem and in its capil- 

 litium nodes. 



SPECIMENS IN OfR COLLECTION*. 



YY.ra.v, \Y. II. Long (four collections). 

 Florida, Mrs. Delia Sams. 

 Alabama, A. S. Bertolet. 

 Iowa, Prof. T. II. McBride. 



TYLOSTOMA PURPLISH ( Plate 79). --Peridium pale, castaneous 

 color, darker at the mouth, with a circular, tubular, protruding mouth. 

 Cortex partly adherent at the base but mostly freely separating, leaving 

 the peridium smooth. Stem colored, rough but not scaly. Capillitium 

 subhyaline. the septa rare, those of the smaller branches swollen but 

 of the large branches very slightly. Spores 5 mic., asperate. 



This species can easily be taken as a giant form of Tylostoma 

 mammosum. It is a rare plant and I have seen from America only the 

 type specimens at Berlin, which were collected in Colorado by a Mr. 

 Purpus. We refer here ( for the time at least, rather than make a new 

 species) plants from Australia with the same general characters, but 

 which differ in more persistent cortex and the spores, which in the 

 Australian specimens vary from 4 to 7 mic. 



SPECIMENS IN Oi'R COLLECTION. 

 Colorado, type from museum at Berlin. 



(. oloraao, type from muse 

 Australia, D. McAlpine ( 



ipecimens collected by V. M. Reader). 



TYLOSTOMA FLORIDANUM (Plate 80). Peridium dark 

 castaneous color, with a small, tubular, circular, protruding mouth. 

 Cortex separating imperfectly, particles adhering to the peridium. thick- 



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