542 FILICES. [Marattia. 
ri marginal; we ibrsioiy sist cage horny 4. Cibotium. 
Sori extramarginal on a bar r tooth; the 
invyolucre sonisiionie very deli 
ec 
i 
i) 
. Asplenium deparioides. 
(Deparia). 
Sori marginal, with an invol _— aes by the margin 
Of the frond, opening inward 
the involucre continuous 9, Pteris. 
Sori on an interrupted marginal nerve or r receptacle; 
the involucres interrupted 
p 20. Schizostege. 
Sori along the extremities of ‘the 1 veins : (not on an 
intranasal anastomosis), at last confluent, 
covered by the narrow nerveless border of the 
21. Pellaea. 
frond 
Sori along the extremities of the excurrent veins the 
he 
ccupying the inner side of the involucre 22. Adiantu 
species of Ferns and Ophioglosseae in t jiian flora 75, or 0 oop me 68 
t., indigenous, O emainder 6 are found also in Polynesia Only, 
Philipines, 1 in Polynesia and Australia, 11 extend through Polynesia to Ma atk er 
tropical a, 7 to Madaga , and 6 as far as the aoa . Cosmopolitan, 
viz., scattered over both the New and Old World, are 16. The r ining 11 are scattering 
waifs, 3 of American origin (Aspl. fragile and A. arboreum, "Pellaea nga e 3 others 
occur in America —. Africa (Aspl. monanthemum, Polyp. eolatum), 
1 in America, Africa and Asia (Aspl. lunulatum), 1 Fongce in Africa (Hyme soe obtus.) 
and Asia ,(Aspl. irae a (Aspl. varians) common to both dads continents, and 1 
(Aspl. adiant. nigr.) common to the entire Old = BAe 
A 
though a statistical analysis of the Cryptogams of a flora cannot claim the es ape 
Keo melee ches to one of the higher classes se “plants, Pb pe two _ com ong 
ond, the great num yee 
ee a A ver the long track which leads ff from oe Mewasian ‘eae through Dolyaedh 
and Malayeth to the east coast of tropical Africa. This last number iene still increase if 
the limi h I have deemed fit to 
ts which I have d t to adopt for a number of specter enlarged. 
it cannot inferred from this fact that all the species in here ve yelled east- 
ward to find the terminus of t igration on this group, spor a he principle be 
u 
established that the formative etiergy of a species or genus (to a a metaphor) be greatest 
at the circumference or farthest extremity of its area. 
. MARATTIA, J. Sm. 
Synanvis oblong, adnate to the veins or shortly stalked, each with two 
rows of loculaments which open on their inner faces by vertical slits. — 
Large ferns, with a tuberous caudex and two fleshy auricles at the bases 
of the roaring leaf stalks; the frond large, twice or thrice pinnate. 
About 8 species, which extend _—— the tropics of the whole world se a little 
beyond in ann panne mm hemisphe 
i, Baker, in ‘Synone: Fil. p. 441. — Stipes 3--5 ft. long, 
itiiok. ais. naked, rising from between large fleshy auricles which 
cover the caudex on all sides. Frond dark-green, glossy, rather fleshy 
when fresh, naked, deltoid or ovate-oblong, 3—8 ft. in length, tripinnate, 
at least at the base. Pinnae oblong- io cparaet the lowest 1/2--2 ft., 
stalks of 1/2—21/2‘, the rhachis narrowly margined in its upper portion. 
Secondary pinnae linear, 3—6‘ long, ns broadly compressed and winged 
rhachis. Ultimate pinnules substipitate, ovate or oblong, !/2—1‘ X 3-4" 
obtuse or acuminate, bluntly serrate, the base cuneate or subtruncate. 
