TUB1FERA 157 



ever, the peridia are connate throughout, and sometimes present 

 above a membranous common covering. This is T. fallax of 

 Persoon ; Licea cylindrica (Bull.) Fries. In forms with thicker 

 peridia, the walls often show the granular markings characteris- 

 tic of the entire Anemece. 



2. TUBIFERA STIPITATA (Berk, and Rav.} Macbr. 



1868. Licea stipitata Berk, and Rav., Jour. Linn. Soc., X., p. 350. 



1875. Tubulina stipitata (Berk, and Rav.) Rost. 



Sporangia crowded in a globose or more or less hemispheric, 

 expanded head, borne upon a spongy, stem-like, sulcate hypo- 

 thallus, their apices rounded, their walls very thin, evanescent; 

 spores in mass umber brown, small, about 5 n, the epispore 

 reticulate as in the last. 



Differs from the preceding chiefly in the cushion-like recep- 

 tacle on which the crowded sporangia are borne, and in the 

 smaller spores. This species originates in a plasmodium at first 

 colorless, then white, followed by salmon or buff tints, which 

 pass gradually into the dark brown of maturity. This peculiar 

 succession of colors is perhaps more diagnostic than the differ- 

 ence in habit. The spores are, however, constantly smaller in 

 all the specimens we have examined. 



New England, New York, south to South Carolina, and west 

 to South Dakota. 



3. TUBIFERA CASPARYI (Rost.} Macbr. 



PLATE XII., Fig. 9. 



1876. Siphoptyclmtm casparyi Rost., Man. App., p. 32. 



Sporangia closely crowded, tubular, cylindric or prismatic by 

 mutual pressure, connate, the apices rounded, convex, covered 

 by a continuous membrane, umber brown ; the peridia firm, per- 

 sistent, minutely granular, iridescent ; hypothallus well devel- 

 oped, thin, brown, explanate ; pseudo-columellae erect, rigid, 

 traversing many of the sporangia, and in some instances bound 

 back to the peridial walls by slender, membranous bands or 



