Haynes : THE GENUS SPHAEROCARPOS 293 
1899. — Stephani, Bull. Herb. Boiss. '7: 657. 1899.—K. Miiller, 
in Rabenh. Krypt.-Fl. Deutschl. Oesterr. & Schweiz 6: 317. 
J. 192. 1907.— Douin, Rev. Bryol. Sy 105-112. f. g-10, 12, 
13, 14. 1907; 36: 37-41. f. 4, 7,70. 19 
Sphaerocarpus Michelit Underw. 2 p. Bull. tacts State Lab. 
Nat. Hist. 2: 30. . 188 
Sphaerocarpus Micheli californicus (Aust.) Underw. @. c. 
Archegonial thallus suborbicular or somewhat cuneate, 3-5 
mm. x 4-8 mm., densely cespitose, bright green when living, dingy 
green or sometimes light olive-green when dried, forking several 
times, the leaf-like unistratose lobes almost entirely concealed by the 
overcrowding of the involucres, marginal cells generally quadrate, 
averaging 45 4; archegonial involucres 1.2-2.6 mm. high, sessile, 
long-cylindrical, fusiform-clavate, very rarely subpyriform, more 
or less acuminate, cells at small orifice usually creniform, 45-60 p: 
antheridial thallus oblong to orbicular, 2 mm. in diameter, forking 
several times, the lobes more conspicuous than those of the arche- 
gonial plant ; antheridial involucres 270-360 y» high, purplish : 
capsule averaging 675 4 in diameter, the bulbous foot remain- 
ing in thallus on detachment of capsule; spores permanently 
united in tetrads, these 72-171 » in diameter, golden-brown to 
dark opaque-brown, regularly areolate, minutely granulate, 
meshes 13-30 in diameter, each, in rare cases, with a single 
median papilla or tubercle, the ridges finally high, sinuous, crenu- 
late, or deeply and irregularly dissected, occasionally forming 
obtuse spines at the points of intersection. [PLATEs 26 and 27.] 
Hasirat: On flat compact commonly lightly shaded soil in 
meadows and orchards and beside paths: 
TYPE LocaLity : San Marco, Texas. 
DistriputTion: United States, Uruguay, England, France, 
Germany, Sardinia, and Northern Africa (Tangier). 
Exsicc: Hep. Bor.-Am. no. 738, as S. Berteri (in herb. New 
York Botanical Garden). — Hep. Brit. xo. 275, as S. ¢errestris (in 
herb. Underwood).— Hep. Europ. wo. 27, as S. ‘terrestris (in 
herb. Underwood). 
An examination of mature specimens of Sphaerocarpos from 
various parts of the United States leads to the conclusion that the 
plant described by Austin as S. ¢exanus in 1877 cannot be satis- 
factorily distinguished from the plant that he described as S. ca/z- 
fornicus two years later. The latter name is therefore considered 
a synonym of the former. Austin himself seems at first to have 
