426 



POLYPODIACEAE. 



3. Dryopteris bermudiana 

 (Baker) Gilbert. BERMUDA 

 SHIELD-FERN. (Fig. 465.) Root- 

 stock thick, creeping, chaffy at the 

 crown with lanceolate acuminate 

 scales. Leaves 2 long or less, 3'- 

 6' wide, pinnate, the rachis pilose; 

 pinnae li'-3' long, V-l' wide, very 

 short-stalked, blunt, cut about half- 

 way to the midvein, dark green 

 and canescent above, paler beneath, 

 their lobes blunt, entire, the basal 

 ones on one or both sides enlarged ; 

 veinlets of the lobes 5-7 pairs, un- 

 forked, pilose beneath, the lowest 

 veinlets uniting into a vein running 

 to the sinus ; sori small ; involucre 

 small, reniform, fugacious. [Ne- 

 phrodium bermudianum Baker ; Ne- 

 phrodium tetragonum of Lefroy 

 and of Hunter.] 



In caves, holes and crevices be- 

 tween Harrington Sound and Castle 

 Harbor. Endemic. Illustrated in 

 Botany of the Voyage of the Chal- 

 lenger plate 13, in which work it was 

 first described (p. 86) by Mr. J. G. 

 Baker in 1885. Its nearest relative 

 appears to be D. asplenioides (Sw.) 

 Kuntze, of Jamaica. 

 4. Dryopteris speluncae (L.) Un- 

 derwood. BERMUDA CAVE-FERN. (Fig. 



466.) Rootstocks. Leaves 2-34 



long, bipinnate or tripinnate, broadly 



ovate, nearly or quite as wide as long, 



the stipes and rachis paleaceous and 



pubescent with crisped hairs ; pinnae 



ovate to ovate-lanceolate, the lower 



somewhat stalked, the upper sessile; 



pinnules oblong to oblong-lanceolate, 



obtuse or acutish, crenate-serrate or 



the larger ones lobed, pubescent on the 



veins beneath, the veins simple; sori 



borne about halfway from the mid- 

 vein to the margin of the pinnules. 



[Polypodium speluncae L. ; Nepliro- 



dium mllosum of Rein, Lefroy and 



Hemsley ;Dryopteris villosa of Gilbert.] 



Caves, holes and ledges, between Har- 

 rington Sound and Castle Harbor, and 

 near Smith's Church. Endemic. Nearest 

 related to Dryopteris ampla (H.B.K. ) 

 Kuntze, of Florida, West Indies and South 

 America, to which it was erroneously re- 

 ferred by Lefroy, Hemsley and Verrill. 



12. NEPHROLEPIS Schott, 



Leaves spreading or pendent, pinnate, elongated ; pinnae numerous, ap- 

 proximate, jointed at the base, with whitish dots on the upper surface. Sori 

 round, arising from the apex of the upper branch of a vein, usually near the 



