CYATHKA. 25 



below naked or furnislieil willi small cdiieave deciduous scales. Pinnules 

 as it were jointed upon the raeliis and at the hase jiinnatcd, the sefjfnients or 

 pinnules he'ui'^ distinct, contracted at the base so tliat their form is ellipti- 

 cal. The texture is very linn, rigid, coriaceous, w hen dry inclinin(^ to a 

 rich brown colour, paler 1)enealli. The veins are numerous, sunk, forked 

 from the very base, and the sori bcinfi' wholly confined to the axil of the 

 lower fork are conseijuenlly i)laced close to the costa. Involucres mem- 

 branous, but lirm and opa(|uc, bursting as it would appear rather irregu- 

 larly on the sujierior half vertically, so as to be irregularly two-lobcil : this 

 large and broad involucre is then rellexed uj)on the costa, but still covering 

 in a measure the sorus on the lower side in the I'oruj of a broad concave hood. 

 As iny specimens have all very advanced fruit, I cannot say with certainly 

 that the involucre conijilctely surrounds the sorus in the young state; but 

 the probability is that it does, and that in structure it is analogous to that 

 of C'. Jiri/ric/iidua. I do not look upon it as a dimidiate involucre, or I 

 should place it in IlemUclia. 



32. C. sphnt/osa, Wall.; stipes and lower jiart of tlie ra- 

 eliis much and strongly aculeatcd, fronds bipinnate flaccid 

 and niemlnanaceons, pinnules sessile lanceolate aeuniinato 

 pinnalifid, segments oblong acute serrulate glabrous with a 

 few minute scattered deciduous scales sometimes (ju the cos- 

 ta beneath (especially on the barren frond), sori close to the 

 costa co])ious, involucres globose membranaceous fragile 

 gloiisy soon breaking down into a jagged irregular cup. (Tah. 

 XIV. C.) JValL in Herb. 1823." Cat. n. 178. 



Hab. Nepal, Wallkh. Madras Peninsula, Dr. Wiyht, n. 11!). — This 

 species is nearly allied to C. excelsa, but is of a more membranaceous tex- 

 ture, and the stipes and main rachis are closely and strongly muricated. 



33. C. gl((iica, Bory ; " fronds triplicato-j)innate, ])innides 

 glaucous beneath oblong obtuse entire the lower on(;s dentate 

 Irora the base to the middle, sori solitary at the base of the 

 pinnides, rachis tomentose, stem arboreous." IVilhl. Sp. PL 

 V. V. p. 403. 



Hab. liourbon, Bory de St. V^inceut. — This species I have never seen, 

 hut it seems to be known to Willdenow and Kaulfuss. The former says 

 that the secondary pinnae are 2 inches and more long, and that the glau- 

 cous hue of the underside is due to a covering of excessively minute scales, 

 only visible under a microscope. Kaulfuss states that the rachis is palcaceo- 

 tomentose," and that the sori at the base of pinnules are geuerally '2 rarely ."< 

 together. 



34. C. crctmlata, Bl.; "arboreous unarmed, fronds l)ipin- 

 nate (or trijiinnatifld) coriaceous, ])iiuniles lanceolate acumi- 

 nate deeply ])innatifi(l chaffy at the costa beneath, segments 

 linear-falcate crenulale at the margins obtuse and entire at 

 the apex, sori (3 — 8) subconfluent close to the costa, rachis 

 above tawny-tomentose nearly glabrous and rough with mi- 

 nute dots beneath." Bluinc, I-^inim. VI. Jar. Fil. p. 2 J 1. 



Hab. Moist mountain woods, Ja\a, lilumc. " Ci/athca ninaHculala dif- 

 fers in the segments only being toothed at the apex." 



