263 44. XEPHRODIUM, § LASTHEA. 



• 



inner edge of the upper side parallel with the rachis, of the under side oblique, 

 the margin cut about halfway down or at the base quite to the midrib into close 

 blunt lobes, the lower piniife distinctly stalked ; texture coriaceous ; rachis and 

 both surfaces naked ; veinlets 4-6 on a side ; sori medial ; invol. firm, naked. — 

 Polyp, m:. Sp. 4. p. 240. 



Hab. Guiana and the Amazon Valley. — Specimens recently received from Appun 

 show the iuvolucre clearly. It is not unlikely to be Willdenow's A. emarginatum. 



15. N. (Last.) insigne, Baker; fr. 1 ft. 1., 9 in. br. ; pinnm opposite, sub- 

 distant, sessile, 5 in. 1., 1| in. br., cut down two-thirds of the way to the rachis 

 into close, oblong, obtuse lobes, the lower ones deflexed ; texture thin, both sides 

 naked ; rachis smooth, stramineous ; veins 12-16 on a side ; sori medial ; invol. 

 minute, slightly hairy. — Aspid. Mett. Fil. Nov. Crran.p. 247. 



Hab. New Granada, Triana. — Approaches N. hrachyodon in habit. 



16. N. (Last.) gracilescens, Hk. ; rhizome wide-creeping ; st. 6-9 in. 1., slender, 

 naked ; fr. 1 ft. or more 1., 6 in. br. ; pinnce 2-3 in. 1., |-^ in. br., cut down 

 within a short distance of the rachis into close, linear-oblong entire lobes ^ in. 

 br., the lowest pair deflexed ; rachis and both sides nearly naked ; veinlets 4-6 

 on a side ; sori nearly terminal ; invol. naked. — Hk. Sp. 4. p. 93. — /3, N. glandu- 

 ligerum, Kze. (sub Aspid.) ; rachis hairy ; under swr/ace slightly glandular ; invol. 

 ciliated. 



Hab. Java ; /3, Japan, China, N. India. — Habit of N. Thelyptem, but a smaller plant, 

 with veinlets always simple. 



17. N. (Last.) chrysolobum, Fee ; st. tufted, 4-6 in. 1., slender, villose, scaly 

 Delow ; fr. 6-9 in. 1., 3-4 in. br. ; pin7i(^ 1^-2 in. 1., f in. hr., cut down nearly to 

 the rachis into close, blunt, entire lobes ^ in. br., the lowest pair deflexed and 

 slightly stalked ; texture herbaceous ; rachis and under surface slightly villose 

 and grandular ; veinlets 6-8 on a side, with the son near their apex. — Mett. 

 Lips. p. 90. 



Hab. Brazil and Columbia. — A. Schotlianum, Kze., is a form with slightly toothed 

 lobes. Most like N. falciculatum, but much smaller and less glandular. 



18. N. (Last.) macrourum. Baker ; st. 1 ft. or more 1., substramineous, nearly 

 naked ; /;-. 3-4 ft. 1., 18-24 in. br. ; pinnce 8-12 in. 1., 1 j in. br., cut down nearly 

 to the rachis into subfalcate entire lobes 2 lin. br., with a space between them, 

 the basal lobes enlarged and pinnatifid ; texture herbaceous ; rachis and under 

 side finely villose ; veinlets 10-15 on a side, the sori about midway between the 

 edge and midrib. — Aspid. Kaulf. N. schizotis, Hk. Sp. 4. p. 107. 



Hab. Brazil, Bwchell, 752 ; E. Peru, Spruce, 4030 ; Caraccas, Birschell. — Doubtfully 

 distinct from N. patens. The lobes are not so deep, and very falcate, and the lowest lobe 

 on one or both sides is dilated and pinnatifid. Probably this is A. stipulare, Willd., but 

 none of our specimens have the dilated lobes nearly so large as in Plumier's t. 23. 



19. N. (Last.) patens, Desv. ; rhizome oblique ; st. 1 ft. or more 1., naked or 

 slightly pubescent ; //-. 2-3 ft. 1., 8-12 in. br. ; pimice 4-9 in. 1., |-| in. br., cut 

 down about three-quarters of the space to the rachis into linear-oblong subfalcate 

 lobes, the lowest lobes not diminished ; texture herbaceous ; rachis and surfaces 

 more or less villose ; veinlets 6-12 on a side ; sori nearer the edge than the 

 midrib ; invol. persistent. — Hk. Sp. 4. p. 95. 



Hab. Florida and Texas to Rio and Chili ; Polynesia, Japan, Zambesi-land, Angola, 

 St. Helena. This has the general habit and soft herbaceous texture of molle, and it is 

 not always easy to separate them, N. patens, J. Sm., is intermediate between the two, 

 having an erect caudex, with the lowest pair of veins joining. A. albicaule, F4e, seems 

 to belong here, and N. pnlosulum (Hk. Sp. 4. p. 102) to be a more hairy form than usual. 



