FERNS COLLECTED IN MADAGASCAR BY M. HUMBLOT. 143 
reaching a length of 15-18 in., 6-7 in. broad. Pinnules lanceolate, 
3-1 in. broad ; tertiary segments adnate, lanceolate, 4 in. broad, 
obtuse, inciso-patent, with contiguous erecto-patent oblong lobes. 
Veins simple in the upper, forked in the lower 4-nary lobes. Sori 
medial on the veins, one opposite each final lobe, 15-20 to each 
fully-developed tertiary segment. Indusium glabrous, eprom 
firm and persistent. Allied to N. effuswm and N. Boivin 
81. N. truncatum Presl. 
309 (218*) NV. (Sagenia) Lawrenceanum (Moore in Gard. Chron., 
n.s., vol. xv. (1881), p. 8, under Sagenia).—A very fine plant, 
introduced lately into cultivation sisough Mears igen’ & Co., of 
St. Alb It comes midway between N. Pica and N. macro- 
phyllum, and has a black shining rachis and stipe, large deeply 
pinnatifi lower pinne above a foot long, large sori in regular rows 
parallel with the main veins and copious distinct areole, with 
shai daat | tia included veinlets. 
N. cicutarium Baker. 
279. Didymochlena lunulata Desv. 
277. Nephrolepis acuta Presl. 
525. Oleandra articulata Cay 
447 (297*). Polypodium (Puymaroprs) inconspicuum, n. 
—Rhizome thread-like, wide- ane: hypog sous. Frond linen, 
simple, coriaceous, glabrous, naked, 13-2 in. long, 4-4 in. broad, 
narrowed gradually into a short stipe, obtuse. Veins a eal 
uite hidden in thick substance of the frond. Sori Lets distant, 
superficial, parallel with the midrib and margin, not more than 
5-6 on each side of the midrib. Allied to P. subecostatum and 
accedens. 
841. P. Ct ley! i ciate Bean & 
666. P. Phymatodes L. or a ally.—Like a new species, but 
our specimen is ai ste aaah ey be sure about 
273, 306. Vittaria elongata Sw. 
291. V. lineata Sw. 
269. V. scolopendrina Thwai 
515, pas Antrophyum coriaceum n Wa ll. 
268. A. Boryanum Kaulf. 
810. Tanitis niphoboloides Luerssen.—This very curious species 
was previously only known by a specimen in the Rutenberg 
began = Per 
iS) 
pee 
8 (19%). Acrostichum (Etapnoeiossum) subsessile, n. sp. 
Ba eh ie! thick, woody, short- -creeping ; ; its pales aig Se 
late, membranous. Barren lamina lanceolate, entire, 14-2 ft. long, 
2-21 in. broad at the middle, natal gradually to the base and 
apex, nearly sessile, moderately firm in texture, green and naked 
n both surfaces. Veins fine, close, indistinct, es Fertile 
frond oblanceolate, eres under 1 ft. long, under 1 n. broad, nar- 
rowed gradually from the middle to a on 3-4 in as dole A near 
As peer Sw. : 
A, latifolium Sw. 
297. A, spathulatum Bory. 
286, 528. A. sorbifolium L. 
