FdCCIA. 4.87 



3. Riccia sorocarpa, Bi.v/iolf. 



Iiiccia sorocfW7;rt, Bischoff, Hep. Nov. Act. N. Car. xvii. p, 1053, t. 71, f. 11 



(1.S3:.). 



Jiiccia minima, L. Schifin. in Engl, und Prantl Pflanzenf. 1)1 und 92 Lief. p. 



ir,(i8'J3). 



Iiiccia minima, L. p.p. Howe, Hep. it Antho. Calif, p. 2-\ (18119). 



Moiioicous, CiL'spitulose, small, pale green in colour, when 

 dry albescent, concolorous. Fronds subradiate, bifurcate ; lobes 

 oblong-linear, on cross-section boat-shaped, salcate, deeply so 

 \vlien dr}', with margins erect ; margins thin, smooth, or with 

 lew hyaline scales ; apex acute or obtuse ; texture firm, antical 

 surface finely reticulate. Capsules embedded in the i'rond, 

 roundish, dark brown. Spores reddish -brown, walls thin, finely 

 tuberculate on the convex sides, projections very minute and 

 numerous. 



Dimensions, — Fronds about 4" mm. long ; lobes "75 mm, 

 broad x '7b mm. thick, 1" mm. x '7b mm., l"mm. x -G n)m. ; 

 when dry '6 mm. broad x 1' mm. thick, '75 mm. x '[) mm., 

 •8 mm, X "5 mm. ; spores -O'Jo mm., '08 mm. x '055 mm. 



Hab. — On thin rocky soil, or more rarely in cultivated fields in 

 limestone districts. Hare. 



1, Battery Hedge, near Penzance, Cornwall, //', Canioic, Sept. 

 1871). 5. Gt. Doward Hill, B. U. ll'afhiu.^, Sept. 1S70 ; Cheddar 

 Cliff's, near lioss, Herefordshire, J3. Jf. llafki/hs. 7. Barmouth, 

 Merionethshire, //'. IL P., Aug. 1877. b. Millers Dale, Derby- 

 shire, IF. II. 1\, Jan. 1871). 12. On earth, among rocks, near 

 Levens Church ; VVliitbarrow ; in sandy cultivated fields S.W. of 

 Bridge End, Levens, Westmorland, (L Stdhlcr. 



I. In fissures and tops of old walls ; on an old wall near 

 Dingle, Liiidbcr// ^- Moore, 1873; wall top by the roadside, 

 leading from Dingle to Ventry, the Dingle side of the river near 

 the Union, Leif S>- McArdlc, ls98. 



Found on the Continent and in North America. 



Obs. — From any form of Riccia (jluiica L. distinguished b\' its 

 deeply sulcate lobes, when dry, being apparently thicker than 



