734 



SYSTEMATIC HISTORY OF THE INEUSOEIA. 



lines ; e. v. with a rounded lobe on each 

 side and roimded at ends. L. 1-333" ; 

 B. 1-372". G.B., F. Var. triqiietrum 

 (Breb.) : e. v. with three rounded angles, 

 sides deeply sinuous ! 



C. Broomei (Thwaites). — Frond in 

 f. V. about as long as broad, constriction 

 deep, linear ; segments quadrilateral, ends 

 straight, angles rounded, rough all over 

 with minute granides ; e. v. twice as long 

 as broad, slightly inflated at the middle 

 and rounded at the ends. Sporangium 

 orbicular, smooth. L. 1-500"; B. 1-540". 

 (1.7.) G.B., F., U.S.A. 



C. ccelatum (Ralfs). — Frond in f. v. 

 about as long as broad, suborbicidar, con- 

 striction deep, linear; segments semioi'- 

 bicular, with six broad crenatures at mar- 

 gin, rough at margin with scattered 

 pearly granules, and at the centre with 

 granules soinewhat concentrically ar- 

 ranged ; e. V. twice as long as broad, 

 with a broad inflation at each side. L. 

 1-921" to 1-581"; B. 1-1024" to 1-608". 

 (n. 26.) G.B., I., F. 



C. ornatum (Ralfs). — Frond in f. v. 

 about as long as broad, constriction deep, 

 linear; segments semiorbicular or sub- 

 reniform, with a central truncate 'pro- 

 jection at the ends produced by the con- 

 tinuation of a central injlation, rough 

 toivards the margins and on the injlation 

 with pearly granules ; e. v. with a rounded 

 lobe on each side. Sporangium orbicidar, 

 spinous ; spines elongated, dilated at the 

 base, and slightly divided at the extre- 

 mity. L. 1-613"; B. about the same. 

 G.B., F., U.S.A. 



C. Sportella (Breb.). — Frond about as 

 long as broad, constriction deep, linear ; 

 segments reniform, with a central trun- 

 cate projection at the ends, its angles 

 slightly dilated and denticulate, rough all 

 over with scattered pearly granules. F. 



C. Corbula (Breb.). — Frond about as 

 long as broad, constriction deep, linear ; 

 segments subreniform, a central truncate 

 jjrojection at the ends tvith its angles 

 slightly dilated and minutely denticulate; 

 furnished at the centre of each segment 

 tvith a circular protuberance bordered with 

 granules, and rough thereon and towards 

 'the margins \%ith scattered pearly gi*a- 

 nules. F. 



C. com missurale (Breb.). — Frond small, 

 in f. V. one-third broader than long ; 

 constriction very deep, rounded; seg- 

 ments narrow-reniform, toith a central 

 somewhat truncate projection, produced by 

 the continuation of the central inflation, 

 rough on the injlation and on the extre- 

 mities with somewhat large pearly gra- 



nules ; e. V. three times longer than 

 broad, constricted between the central in- 

 jlation and the rounded extremities. Spo- 

 rangium as in C. ornatum. L. 1-923" ; 

 B. 1-663" to 1-609". G., B., F. /3 

 acutum (Breb.), angles sharper. 



C. cristatum (Ralfs). — Frond in f. v. 

 as long as broad, orbicular, consti-iction 

 deep, linear ; segments semiorbicular, 

 margined by a series of obtuse papilla- 

 like pearly granules, and having at the 

 centre of each a circular granulate infla- 

 tion ; e. V. linear, truncate at ends, with 

 a slight central inflation at each side. 

 L. 1-700" ; B. 1-653". G.B., F. 



C. pluviale (Breb. in lit. c. ic). — Frond 

 about one-third longer than broad ; con- 

 striction a shullotv ivide notch ; segments 

 subovate, gradually tapering, ends round- 

 ed, or broadly rotundato-truncate, rough 

 all over with minute granules ; e. v. 

 elliptic. F. 



2* Frond not compressed; central con- 

 striction rarely a deep, never a linear, 

 incision, but merely the result of the form 

 of the contracted bases of the segments ; 

 e.v. circular, or, very rarely, compj'essed. 



t Frond rough with pearly granules, 

 which give a denticulate appearance 

 to the outline. 



C. Colpopelta (Breb, in lit. c. specimine). 

 — Frond rather more than twice as long 

 as broad ; constriction a shallow contrac- 

 tion ; segments somewhat widening up- 

 wards from the base, oval, sides and ends 

 broadly rounded, very minutely granulate, 

 grannies scattered ; e.v. circular. F. 



C. cylindricum (Ralfs). — Frond minute, 

 in f. v., about twice as long as broad ; 

 segments subquadrate, narrower at the 

 junction and gradually ividening upwards, 

 ends truncate, rough all over with pearly 

 granides somewhat arranged in lines', 

 e. V. circidar. L. 1-588" ;' B. 1-1060". 

 (ill. 16, e.v. 17. )=Peniu?n Ralfsii (Kg.). 

 G.B., I., F. 



C. striolatum (Niig. sp.). — Frond in f.v. 

 about twice as long as broad, elliptic; 

 constriction a shallow rounded sinus ; 

 segments with sides and ends broadly 

 rounded, pearly granules arranged in lines 

 and giving the margin a crenate appear- 

 ance, except at the central sinus, which is 

 smooth. L. 1-16"'; B. 1-33'". = Dy- 

 sphinctium striolatum (Nag. ).• G. 



C. orbiculatum (Ralfs).— Frond minute, 

 in f. v., twice as long as broad ; constric- 

 tion deep; segments spherical, rough all 

 over, except at the neck-like contrac- 

 i tion, with pearly granules ; e. v. circular. 



