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 
Micheli 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 IO) and also that S. ¢evanus shows 
a parallel series of forms (PLATE 27, FIGURES II 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 I9 and 21) which we are 
inclined to refer to S. fexanus. 
2. SPHAEROCARPOS TEXANUS Aust. Bull. Torrey Club 6: 158. 
1877.— Underw. Bull. Illinois State Lab. Nat. 
Hist. 2: 30. 1884.—Stephani, Bull. Herb. 
Boiss. '7: 656. 1899. 
Sphaerocarpus terrestris Bisch. ~. p. Nova Acta Acad. Leop.- 
Car. Nat. Cur. 13: 829-838. p/. gg. 1827.—Lindenb. £.p. 
Nova Acta Acad. Leop.-Car. Nat. Cur. 18: 496. pl. 36. 1836. 
— Nees, p. p. Naturgesch. Europ. Leberm. 4: 365. 1838. — Pears. 
p. p. Hep. Brit. Is. 482. pf. 275. f. 1-14. 1902. — Stephani, 7. p. 
Bull. Herb. Bois. '7: 656. 1899. 
Sphaerocarpus Berterii Aust. Hep. Bor.-Am.: Tickets of the 
specimens 34. 1873. Not S. Berterit Bisch. 
Sphaerocarpus californicus Aust. Bull. Torrey Club 6: 305. 
1879. — M. A. Howe, Mem. Torrey Club 7: 65. pl. roo. f. 9-12. 
