Haynes : The genus Sphaerocarpos 225 



even on a single plant : those in one capsule measured 72-99/*, 

 while those in another capsule on the same plant measured 92— 

 132 u ; these two sets of spore-tetrads were about equally brown, 

 but the smaller had smaller meshes and lower ridges and it is 

 probable that the plant was killed before these smaller ones had 

 reached full maturity. 



As indicated above, Sphaerocarpos texanus seems to have a 

 wider distribution than any other species of the genus. 



It is of interest to note that the classical descriptions of 6". ter- 

 restris given by Bischoff,* by Lindenberg.f and by Nees % were 

 based, in large part at least, on specimens collected at various 

 times in vineyards near Durlach, Karlsruhe, Baden, by A. Braun. 

 Now it proves that copious specimens collected by A. Braun in 

 this locality in 1834 (the 1834 collection is mentioned by Nees) 

 and preserved in the Mitten Herbarium are clearly S. texanus 

 Aust. (see plate 27, figure 17), and it may be said that some of 

 the figures published by Bischoff and by Lindenberg point to 6". 

 texanus rather than to S. Sphaerocarpos. It is to be added, how- 

 ever, that the genuine 6". Sphaerocarpos [S. terrestris) — beautifully 

 distinct — also occurs in Baden and near Karlsruhe, as is attested by 

 specimens collected by A. Kneucker on April 21st, 1894, in vine- 

 yards between Grotzingen and Weingarten (see plate 25, figure 

 8), and it is possible that both species were represented in the 

 material obtained by Professor Braun. 



3. Sphaerocarpos hians sp. nov. 



Archegonial thallus oblong or orbicular, 4-6 mm. in diameter, 

 growing in isolated groups, bright green when dried, margin lobed 

 and crispate, ascending, marginal cells generally quadrate, averag- 

 ing 47,"; archegonial involucres 1—2 mm. high, sessile, not 

 crowded together or entirely concealing the thallus, tubular-ovoid, 

 sometimes slightly larger at apex and slightly flaring, orifice large, 

 of the diameter of the involucre or larger, irregular and entire, 

 cells at orifice 26 x 39 /A with thick walls: antheridial thallus 

 cuneate to orbicular, 2 mm. in diameter, forking several times, the 

 leaf-like lobes curved over the involucres, these 243—398 // in 

 height, green becoming brown and purplish with age, their cells, 



* Nova Acta Acad. Leop.-Car. Nat. Cur. 13: 829-838. pi. 44. 1827. 



f Zw. Cit. 18: 496. pi: 36. 1836. 



J Naturgesch. Europ. Leberm. 4 : 365-369. 1838. 



