FILICES (Ferns). 



j See Supplement 1, p. 17 — 21. 



■ ■ - r,T,Ar . n t mx ■ a ixttititt a t . jL.r->si a -f p.ntt..in.,^ 



green, flat or filiform, entire, incised or branched, epigeous/or 

 epiphytical, adpressed to the substratum. Diels, in Engl. & Ej<antl, 

 Nat. Pfl. Fam., I\ fig. 11. / 



b. SERIES I. ANNULATAE. Sporangia with a rin^onsisting of 

 a close or broken row or a group of conspiciumsly prominent, 

 thickened cells. / 



FAMILY I. Cyatheaceae. Ring completeff oblique, subvertical, 

 sometimes interrupted by a. group of depressed, /wansversally oblong cells, 

 which are however distinctly differentiated frooi the other cells of the spo- 

 rangium. Sori globose or oblong, consisting/of numerous, densely crowded 

 sporangia; indusium wanting or present, liut then neither umbrella-shaped 

 nor lineal". Arborescent ferns. Diels ly^., fig. 82, D; Hk. Bk., Syn. Fil., 

 tab. I, fig. 4—6. / 



FAMILY II. Matoniaceae. Ring as in Cyatheaceae but never in- 

 terrupted. Sori ^consisting of/*— 8 sporangia placed in a whorl; indusium 

 umbrella-shaped. No arborei^ent ferns. Diels, 1. c, fig. 181 & 182, B; 

 Hk. Bk., I. c, fig. 8. / 



FAMILY III. Gaeicheniaceae. Ring complete, ± horizontal, sur- 

 rounding the sporangium like a belt. Sori dorsal, consisting oif 2 — 12 (sporangia 

 mostly placed in a whorl ; indusium wanting ; receptacle dot-like Diels, I. c , 

 fig. 186; Hk/Bk., 1. c, fig. 2. 



YAMLY IV. Hymeiiophyllaceae. Ring as in Gleicheniaceae. 

 Sori ^marginal, consisting of numerous sporangia crowded around an erected, 

 obLelngjfcIavate, i capitate, malleiform or columnar-filiform receptacle; indusium 



I fregent . Diels, 1 . c, fig n k 1% D; Hk Bk , 1 r . , tab . I I , fig . 16 . -17 . 



