222 Haynes : The genus Sphaerocarpos 



Specimens examined : Five specimens from Italy, sent by Dr. 

 E. Levier ; living specimens from Ferrara, Italy, sent by Professor 

 C. Massalongo ; eight specimens from France, sent by Professor 

 C. Douin ; a specimen from Baden (between Grotzingen and Wein- 

 garten), collected by A. Kneucker; and a specimen from England, 

 collected by W. H. Burrill, and communicated by Mr. William E. 

 Nicholson. 



Adherents of the Vienna Rules will use the name Sphaerocarpos 

 Michclii for this species, while for those who follow the "American 

 Code," its legal name is clearly that adopted above. 



The areolae of the spore-tetrads of this species occasionally 

 show an isolated median papilla or tubercle (see plate 25, figure 

 12). This peculiarity is so pronounced and constant in certain 

 collections that the possibility of its proving a diagnostic character 

 of an unrecognized species at first suggested itself, but it soon 

 became apparent that this character is sometimes only slightly 

 developed (plate 25, figure 10) and also that 5. tcxanus shows 

 a parallel series of forms (plate 27, figures i i and 15). It may 

 be mentioned, however, that the spicules of some of these peculiar 

 spore-tetrads with unipapillate areolae are less sharply pointed 

 than is normal in S. Sphaerocarpos, approaching the blunt spines 

 of certain forms (plate 27, figures 19 and 21) which we are 

 inclined to refer to S. texanus. 



2. Sphaerocarpos texanus Aust. Bull. Torrey Club 6 : 158. 



1877. — Undervv. Bull. Illinois State Lab. Nat. 



Hist. 2: 30. 1884. — Stephani, Bull. Herb. 



Boiss. 7 : 656. 1899. 



Sphaerocarpus terrestris Bisch. p.p. Nova Acta Acad. Leop.- 

 Car. Nat. Cur. 13: 829-838. pi. 44. 1827. — Lindenb. p.p. 

 Nova Acta Acad. Leop.-Car. Nat. Cur. 18: 496. pi. 36. 1836. 

 — Nees, />./>. Naturgesch. Europ. Leberm. 4: 365. 1838. — Pears. 

 p. p. Hep. Brit. Is. 482. pi. 215. f. 1-14. 1902. — Stephani, p.p. 

 Bull. Herb. Bois. 7: 656. 1899. 



Sphaerocarpus Berterii Aust. Hep. Bor.-Am. : Tickets of the 

 specimens 34. 1873. Not 5. Berterii Bisch. 



Sphaerocarpus calif omicus Aust. Bull. Torrey Club 6: 305. 

 ^79. — M. A. Howe, Mem. Torrey Club 7 : 65. pi. 100. f. 9-12. 



