34. BLECHsnr, § eublechnum. 185 



^'^^ Fronds pinnate. Sp. 7-17. 



7. B. hmgifolium, H. B. K. ; rhizome slender, creeping ; ««. firm, erecf, nearly- 

 naked, 6-12 in. 1. ; ^. with a tenninal pinna and SS lateral ones on eacn side, 

 which are 3-5 in. L, J in. br., narrowed gradually towards the point, narrowed 

 or even slightly stalked and then cordate at the base, the lower ones about 1 in. 

 apart ; texture coriaceous ; raclm and both surfaces naked ; veins inconspicuous ; 

 sort in broad lines close to the midrib.— fli. Sp. 3. p. 49. t. 94.— ,3, B.fraxineum, 

 Willd. ; hdnt more robust ; pinn<B 6-8 on a side, sometimes 1 in. br. — ^B. Schli- 

 mense, F^. 



Hab. Tropical America from Mexico and the 'West Indies Bonthward to Brazil and 

 Pern. — B. graaU, EauU;, appears to lUffer from the type only by its rather more slender 

 habit, and B. intermedium, Idnk, is more slender still, and may posably belong to 

 species 1. The veins occa^onally form costal arclies, as is the case also in B. untlaterale 

 and auslrale. 



8. B. Fendleri, Hk. ; rMzome slender, wide-creeping ; jj. 9 in. 1., slender, pale 

 straw-coloured, slightly villose above ; fr. subdeltoid, 4-6 in. 1., 3 in. br., with a 

 linear terminal pinna and 3-4 pair of spreading subfalcate lateral ones, which are 

 2-3 in. 1., J in. or rather more br., with an acute point, the lower ones auricled 

 at the base, quite adnate but not connected with one another ; texture herba- 

 ceous ; racMs viUose and both surfaces slightly so ; iseins fine, forming a series of 

 costal arches halfway up the pinnx ; sori in continuous lines close to the midrib, 

 with a pale broad membranous slightly villose involucre. — Hk. Sp. 3. p. 48. 

 1. 158. 



Hab. Venezuela, PendUr, 116. Brazil, BuTeheU, 6460. — "Baa has qnite the general 

 habit of the preceding, of which it is not unlikely a form with more dender habit an« 

 more anastomosing venation. 



9. 2i. , : 'enzale, Linn. ; caud. stout, erect, clothed at the crown with lan- 

 ceolate acuminate scales ; st. 6-12 in. 1., erect, scaly below ; /r. ovate-acuminate, 

 9-18 in. 1., 4r8 in. br., with 12-24 linear pinntB on each side, which are 3-6 in. L, 

 f-J in. br., narrowed gradually to a point, truncate or cordate or even auricled 

 at the base, the lower ones often 1 in. apart, and the lowest pair deflexed and not 

 much less than the rest ; texture coriaceous ; racTiis and both surfaces naked or 

 slightly pubescent ; veins inconspicuous ; sori in a broad continuous line close to 

 the midrib.— fii. z^. 3. p. 50. 



Hab. America, common from Mexico andW. Indies southward to Chili and S. Brazil, 

 — B, pedinaium, Hk. Ic. PI. t. 95, is a form with narrow pinnse dilated, and most of 

 them connected, at the base, and X. caimpylolis, Ennze, a form with a distinct acnte 

 anricle at the base of the pimue on the upper side. 



10. B. arcaaium, C. Gay ; caud. stout, suberect, densely clothed at the crown 

 with lanceolate acuminate dark-brown scales ; St. 6-12 in. L, strong, erect, scaly 

 at the base ; Jr. 12-18 in. 1., lJ-2 in. br., linear-lanceolate, with very numerous 

 contiguous linear-lanceolate falcate pinnce on each side, which are f in. 1., by 

 under J in. br. below, gradually narrowed upwards, hastately auricled on the 

 npper side, quite distinct at the base, but sometimes imbricated, gradually 

 diminishing downwards to mere auricles ; texture rigid and very coriaceous ; 

 raehis and both surfaces naked ; veins immersed ; sori in a continuous line close 

 to the midrib. — Hk. Sp. 3. p. 59. B. acuminatum, Sturm, non Fie. 



Hab. Chili and Chiloe. — ^A more rigid plant than the last^ with a narrower frond 

 narrowing gradnally downwards. 



11. B. hastatum, Kaulf. ; caud. short, stout, scaly ; st. erect, 4-6 in. L, nearly 

 naked ijr. 12-18 in. 1., 2-4 in. br., lanceolate, with 20-40 pinncs on each side, 

 the sterile ones 1-1 J in. 1., J-| in. hr., lanceolate, falcate, narrowed gradually to 



2 a 



