Haynes: The genus Sphaerocarpos 221 



Sphaerocarpos tcrresiris, minima Mich. Nov. PI. Gen. 4. pi. 3. 

 1729. — Dill. Hist. Muse. 536. pi. 78. f. 17. 1741. 



Sphaerocarpos Michelii Bell. App. ad Fl. Pedem. 52. 1792 {fide 

 aitctonim); Mem. Acad. Roy. Sci. Turin 5: 258. 1793 I 

 Usteri Ann. Bot. 15 : 87. 1795. 



Sphaerocarpus terrestris J. E. Smith, Eng. Bot. pi. 299. 1796. — 

 Bisch. p. p. Nova Acta Acad. Leop.-Car. Nat. Cur. 13: 829- 

 838. pi. 4.4.. 1827. — Lindenb. p. p. Nova Acta Acad. Leop.- 

 Car. Nat. Cur. 18: 496. pi. 36. 1836.— Nees, /. p. Natur- 

 gesch. Europ. Leberm. 4: 365. 1838. — Stephani, p. p. Bull. 

 Herb. Boiss. 7: 656. 1899. — Pears, p. p. Hep. Brit. Is. 482. 

 pi. 2 1 j. f. 1-14. 1902. — K. Muller, in Rabenh. Krypt.-Fl. 

 Deutschl. Oesterr. & Schweiz 6: 316./. 190,191. 1907. 

 — C. Douin, Rev. Bryol. 30: 44-57./. 8-21. 1903; 34: 

 1 05- 1 12. /. 1-3, it, IS- 1907 ; 36 : 37-41- /• 1-3, 5, 6, 8. 

 1909. 



Sphaerocarpus lagenarius Dumort. Comm. Bot. 78. 1822. 



Sphaerocarpus utricitlosits Dumort. loc. cit. 



Sphaerocarpus terrestris, /9? utriculosus Dumort. Hep. Eur. 164. 



1874. 



Archegonial thallus orbicular to obovate, 0.6 -13 mm. in 

 diameter, densely cespitose, bright green when living, yellowish 

 brown when dried, forking several times, lobes short, orbicular, 

 margin ascending or incurved, marginal cells generally quadrate, 

 33-66 fi ; archegonial involucres 1.5-2.5 mm. high, sessile, thickly 

 crowded together so as almost entirely to conceal the thallus, pyri- 

 form, obovoid, or subglobose, orifice small, cells at orifice 

 creniform, quadrate or oblong, 66-85 I 1 x 39~59 P '■ antheridial 

 thallus cuneate to orbicular, 1 mm. in diameter, the rounded lobes 

 curving over the involucres, these 260-330// in height, purplish : 

 capsule averaging 750/^ in diameter, the bulbous foot remain- 

 ing in thallus on detachment of capsule ; spores permanently 

 united in tetrads, these 90-120 n in diameter, greenish or 

 brownish black, finely and regularly areolate, meshes small, 

 7-15// in diameter, each, occasionally, with a single median 

 papilla, ridges low excepting at points of intersection, where they 

 are raised into very acute or acicular spicules, these 7-12 fi in 

 height. [Plate 25.] 



Habitat : Damp sandy clay ; " in clover fields " (England). 



Type locality : Florence, Italy. 



Distribution : Italy, France, Germany, England, and Pantel- 

 leria Island (between Sicily and Tunis). 



