73 
deltoid and bi-piniiate, pinnules approximate, shortly petiolate, rather rigid flabellate and approaching to lunate or sub-rhomboid with the 
sides unequal, the base obliquely cuneate, sometimes the upper ones are confluent, the superior margin crenulate or soriferous. Sori 
continuous or interrupted, involucres toothed. Hook. Sp. Fil. i, 211.— Dry. in Linn. Trans, v, iii, p. 41, i. 8. /. 2 L. polymorpha, 
Wall. Cat. n. 14. 
A very valuable species. Sir W. Hooker enumerates 3 varieties. 
Ceylon. (C. P. 3311.) 
PLATE No. CCXVI. 
5. Liuds<:Ba caudaia. (Hook). Stipes terete and as well as the rachis deep brown glossy, fronds bi-pinnate, pinnaj narrow, numer- 
ous, (11-17), lanceolate, the apex long, attenuate caudate, pinnules half ovate, lunulato-falcate decurved, membranaceous close, superior 
base truncate, upper margin forming almost the segment of a circle quite entire, terminal ones gradually smaller on the caudex or tail-like 
point, sori at the very margin and continuous to the obtuse apex, llook. Sj). Fil. i, 215. 
Ceylon. (Adam's Peak.) (C. P. 1380.) 
PLATE No. CCXVn. 
Adiantum. See page 1. 
1. Adiantum flahellulatum. (Linn.) Frond flabellate, bipartito-pedately divided, tri-pinnate, secondary pinnte lanceolate acumi- 
nated, pinnules glabrous, sub-coriaceo-chartaceous, obliquely cuneate or semi-orbicular-cuneate, superior base truncate, superior margin 2-4 
lobed and serrato-dentate in the sterile one, lobes soriferous, involucres large, the breadth of the lobe oblong, straight, rarely a little curved, 
hard coriaceous, stipes elongated, ebeneous scabrous below, the rest as well as the slender rachis glossy and glabrous. Hook. Sp. Fil. ii, 30 ; 
—Linn. Sp. PI, p. 1,558 A. fuscum, Retz. Obs., ii, ^j. 28. t. 5 A. ama^num, Wall. Gat. n. 78. 
Ceylon. (C. P. 3390.) 
Note.— Adiantum rliizophorum (C. P. 3102), appears to be only a glabrous variety of Adiantum caudatum. 
PLATE No. CCXVIIL 
PETEFvIDE^. 
Pteris. See page 11. 
PLATE No. CCXIX. Is a curious Fferis forwarded from Ceylon by Mr. T. W. Beckett. It is, I believe, a variety of my Pt. Otaria, 
and seems intermediate between Pteris otaria and Pt. crenata — it is, I believe Pt. quadri — aurita var. ludens of Mr. Thwaites' enumera- 
tion (C. P. 1351 and 30C0) and Mr. Thwaites suggests that it may be a hybrid. 
C. Veins uniformly reticidated, without free included veinlets. 
LiTOBROCHiA. Presl. Tent. Pter. 148. 
(Histiopteris, Agardh. ;— Doryopteris, J. ;— Hetero phlebium, /'c'd ;— Pteridis sp., And. ;— Polypodii sp.. And. .— Acrostichii 
sp., Auct. ; — Cheilanthes sp., Aud. ; — Lonchitidis sp.. Linn.) 
Son indusiate, marginal linear continuous, the 7-eceptacles linear transverse, uniting the apices of the veins. Indusiurn of the 
same form, membranaceous. Veins simple or forked from a central costa, uniformly reticulated, evident or obscure, the hexagonal .simple 
areoles universal, or rarely the basal portion of the veins parallel. 
Fronds herbacious or coriaceous, simple, pedate, palmate, pinnate or bi-tri-pinnate. Pihizonie short, erect or creeping (Moore.) 
1. Litohrochia tripartita. (Sw.) Stipes elongated, stout, and with the rachis sub-castaneous, fronds ample, tripartite lateral branches 
pinnate spreading long, petiolate sub-membranaceous glabrous, pinnules 4-6 inches or more long, linear-oblong or linear, lanceolate sub- 
sessile, acuminate rather deeply pinnatifid, segments approximate, linear-oblong falcate (upwards) obtuse or acute, entire or scarcely serrated 
and only at the apex, nearly half an inch long, sinuses obtuse, basal veins forming a single arc parallel with the costa, veins forming 
a series of 2 or more areoles (parallel with the costule), from which proceed free veinlets which do not extend to the margin but termi- 
