— 81 — 



Very large; pinnæ more than i2 dm. long by 5 — 6 cm. broad at the 

 middle, the lower ones short-stalked, the upper sessile, adnated to the 

 rachis with a decurrent wing; the first pairs of segments at the base of 

 the pinnae very reduced, auriform or like a broad wing to the costa of 

 the pinna; terminal pinna narrowed suddenly at the base to a broad de- 

 current wing; sterile apex of the segments serrate; texture subcoriaceous, 

 rigid; colour pale-green with a metalHc, silvery lustre; veins raised as in 

 P. splendens Klf. 



Glaziou 12359. 



Probably a distinct species, but the specimen being too incomplete I 

 cannot form a concrete opinion upon that question. 



Pteris Schwackeana Christ, Spec. pter. austr. Bras. 27. This species, 



lately described by Dr. Christ , I have found in the collection of Glaziou 



under n. 16641. The specimen agrees exactly with the description of 



Christ, only the pinnæ are nearly opposite and somewhat broader: 3V2 cm. 



.A well-marked species allied to P. splendens Klf. 



Lindsaya lancea (L.) Mett. var. semilunata n. var. 



Unbranched, simple pinnate; pinnae large, 4^2 cm. long, 1^2 cm. broad, 

 the lateral ones with a curved falcate apex, the lower edge straight or 

 slightly concave, the upper arched with the inner side straight and nearly 

 parallel to the rachis, sometimes with a little auricle ; the terminal pinna 

 semilunar with a cuneate base, 3 — 4 cm. broad, upper edge somewhat 

 concave and protruded at both sides into falcate curved horns. Texture 

 papyraceous, plant entirely glabrous; sori in an unbroken row along the 

 upper edge of the pinna. 



Glaziou 12352, 12353. 



This fern is of a peculiar habit, yet, I think, it is only a form of the 

 very variable L. lancea (L.) Mett. (L. trapeziformis Dry.). It comes near 

 the var. falcata (Willd.) Bak. in the size and shape of the lateral pinnæ, 

 but the terminal pinna is very different. L. Schomhurgkiana Kl., Kunze 

 Farnkr. 2, tab. 128, which I have not seen, differs by its more obtuse 

 pinnæ and by its rachis being entirely hidden by the overlapping pinnæ. 



«/9 1902. 



