71. DAN^A. 443 



distinct crisped wing throughout ; fertile fr. on longer st. than the barren ones, 

 and the pinnse more distinctly stalked and not so close. Moore, Ind. Fit. p. 288. 



Hab. Tarapota, East Peru, Spruce 4710. 



4. D. Leprieurii, Kze. ; st. 6-9 in. 1., slender, nearly naked, with 3-4 distinct 

 articulations ; barren fr. 6-9 in. 1., 3-4 in. br., with about 6 sessile pinnce on 

 each side, which are 1^-2 in. 1., f in. br., oblong-falcate, the edge crisped, the 

 lowest pair nearly equalling the others ; texture subcoriaceous ; veins very fine 

 and close, usually once for"ked ; rachis slender, swollen at the nodes, slightly 

 winged upwards ; fertile fr. on a longer st. than the barren one, the pinnae 

 similar, but smaller. Kze. t. 60. 



Hab. Guiana and the Amazon Valley. This forms the section Arthrodancea of Presl, 

 characterized by a distinctly articulated stem. 



5. D. humilis, Moore ; st. of barren fr. 2-4 in. 1., furfuraceous, with 0-1 node ; 

 barren fr. about 1 ft. 1., 2-3 in. br., with 15-25 close pinnce on each side, the 

 central ones 1^ in. 1., J- in. br., distinctly stalked, the point blunt, the edge 

 sl'ghtly crisped, the base on both sides rounded or subcordate ; lower pinnce 

 rather shorter than tLe others; featfwre "fleshy-herbaceous ; rachis' furfuraceous, 

 distinctly winged throughout ; veins fine and close ; fertile fr. like the other, but 

 smaller. Moore, Ind. Fil. p. 286. 



Hab. El Ecuador, Seemann 996 ; and a plant gathered by Dr. Spruce in East Peru 

 (4769) is probably the same. Some of Dr. Seemann's specimens are. proliferous at the 

 apex. 



6. D. alata, Smith ; st. of barren fr. 2-6 in. 1., densely furfuraceous, with 0-1 

 node; barren fr. 12-18 in. 1., 6-8 in. br., with 8-10 pinnce on each side, the 

 central ones short-stalked, 3-5 in. 1., f in. br., the apex acuminate or cuspidate, 

 serrated, the base rounded, the lowest pair distant and much reduced ; texture 

 subcoriaceous ; rachis and midrib beneath furfuraceous, the former distinctly 

 winged in the upper half ; veins conspicuous, usually simple ; fertile fr. on a 

 longer st., the pinnse stalked more distinctly, 1-3 in. 1., acute or obtuse, 3-4 lin. 

 br.Plum. t. 109. Hk. $ Gr. t. 18. 



Hab. West Indies. 



7. D. Augustii, Karst. ; st. of barren fr. 3-4 in. 1., slender, naked, with 1-2 

 nodes ; barren fr. about 1 ft. 1., 6-8 in. br., with 4-5 pinnce on each side, which 

 are 3-4 in. 1., ^-f in. hr., the upper ones sessile, the lowest stalked and slightly 

 reduced, all narrowed to the base, the upper part inciso-crenate ; texture herba- 

 ceous ; colour dark-green ; veins not very close, usually once forked ; rachis 

 naked, slightly winged upwards ; fertile pinnce similar. Sturm in Mart. Fl. 

 Bras.fasc. 23. p. 159. 



Hab. Venezuela, Karsten. 



8. D. Moritziana, Presl ; st. of barren fr. 8-12 in. 1., slightly furfuraceous, 

 with 1-2 nodes ; barren fr. 12-18 in. 1., 6-10 in. br., with 10-12 pinnce on each 

 side, all sessile or nearly so, 3-5 in. 1., ^-1 in. br., the apex acuminate or cus- 

 pidate, sharply toothed, the base cuneate, the lowest pair not distant or reduced ; 

 texture subcoriaceous ; veins close, mostly once forked ; rachis nearly naked, 

 slightly winged towards the apex; fertile pinnce l|-2 in. 1., J in. br. Presl, 

 Suppl. 6. p. 35. 



Hab. Columbia to Peru. Midway between alata and elliptica. 



9. D. stenophylla, Kze. ; st. of barren fr. about 1 ft. L, naked, with 2-8 nodes ; 

 barren fr. 1^-2 ft. 1., 6-10 in. br., with 12-15 pairs of pinnce, the upper sessile, 



