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172 31. PTEEIS, LITOBEOOIIIA.
mosing once only between the midrib and margin ; sori not reaching the tip of
t he segm. H k . Sp. 2. p . 216. Gard. Ferns, t. 23.
H ab . Braz il.
81. P. (Lito.) incisa, Thunbg. ; st. stout, erect, polished, straw-coloured or
hright-brown, sometimes slightly muricated towards the base ; f r . often several
ft. 1., bi- or tripinnate, only the uppermost jnnnæ simply pinnate with entire
linear-oblong pinnl., tliose next iu order with numerous pinnatifid pinnules
2-3 in. ]., about | in. br., in opposite pairs, the lowest often quite close to the
stem, reduced in size and their segments dilated, the lowest pinuæ often very
large and compound ; texture herbaceous or subcoriaceous ; under surface often
glaucous ; veins free or more or less anastomosing ; sari interrupted or continuous,
often reaching the point of the segments.—Hjc. Sp. 2. p . 230. P . Ves-
pertilionis, Labill. P . sinuata, Brack. H k . Sp. 2. p . 232. fi, P . aurita,
Blume ; lowest p a ir of pinnules quite simple and closely adpressed to the stem
a t the base of the pinnæ.—H k . Sp. 2. p . 231.
H a b . T ro p ic a l A m e ric a from W e s t In d ie s an d Columbia so u thw a rd to Chili, J u a n
F e rn an d e z , and B r a z il; P o ly n e s ia ; H im a lay a s, an d F ormosa, so u thw a rd to N ew
Ze aland, V a n D iem en ’s Land, an d Ceylon ; Mascaren Isles, Cape Colony, W e s t Tropical
A fric a .— .A very variable p la n t in size, cu ttin g , te x tu re , an d v en a tio n . I t is often
s can d en t, w ith long sp re ad in g rig id branches, an d is said to a tta in a le n g th o f 10 yards.
I ll a form g a th e red by Capt. Carm ichae l in th e island of T ristan d’A cu n h a , th e veins do
n o t anastomose a t all ; often th e re is only a single a rch on each side o f th e co sta a t th e
base of a segmen t, an d in specimens, oth e rwise q u ite similar, th e re is copious jo in in g
towai-ds th e edge. Sometimes th e sori a re confined to th e sinuses, as in Lonchitis.
Sp. 82-87.
82. P. (Lito.) tripartita, Swartz; St. 1 ft. or more 1., strong, erect, naked,
Jiolished, straw-coloured or brownish ; f r . tripa rtite, the central portion 2 ft. 1. or
more ; terminal pin n a 6-9 in. L, J-1 in’, br., cut down nearly to the rachis into
numerous closely-placed linear lobes on each side, w'hieh are very slightly
toothed when barren ; very numerous, closely placed, all u n b
ran ch ed ; lateral divisions similar to the central one b u t smaller, sometimes
forked again ; rachis and both surfaces naked ; texture usua lly herbaceous ;
veins fine, anastomosing jirincipally in arches against the midrib ; sori falling
ra th e r short of the point of the segments.—H k . Sp. 2. p , 225. excL fi and y.
Hab. Polynesian and Malayan Islands from the Philippines southward to the Isle of
Pines, Brromanga, Queensland ; Malayan Peninsula, Ceylon, Sylhet, Seychelles,
Mauritius, Bourbon, and West Tropical Africa.—P . hoterophlebia, Kunze, Bot. Zeit. 6.
p. 197, is probably a form of this with the veins usually only anastomosing once between
the midrib and edge of the segments.
83. P . (Lito.) Luschnathiana, B a k e r; st. 2 ft. I., strong, erect, naked, straw-
coloured ; f r . trip a rtite , with the three divisions nearly equal ; terminal p in n a
6-9 in. 1., ] J in. br., cut down to a broadly-winged rachis, into numerous
narrow falcate linear lobes with a broad sinus between them, which are finely
spinuloso-serrated when barren ; lateral p innæ numerous, similar, the lowest
2 in. below the next, not forked ; rachis and both surfaces naked ; veins fine,
scarcely anastomosing in the ultimate segments except in costal arches in the
lower h a lf ; sori falling short of the point.—Campteria, Klotzsch.
Hab. Brazil, Luscknath.
84. P . (L ito .) podophyila, Sw a rtz ; st. 4 ft. 1. or more, J - | in. th ick a t the
base, muricated below, straw-coloured, glossy ; f r . ample," ternately divided ;
terminal pinna 6 in. 1. or more, 1 - lJ in. br., cut down two-third,s of the way to
the rachis into numerous linear-oblong falcate lobes, wliich are finely spinuloso-
3 1 . PTEKIS, §§§§§§§ AMPHIBLESTBA.
C ' 7 o f th e A . lU® r »
coriaceous, both surfaces and ? fallino- short of the apex of the
- ; T E L. ¿ S t è c a r p a , «éc. % . 2.
T m f r p . H f e r a f ié a ; pinnoe sm a lle r; segm. narrower and s h a rp e r .-
ilk . Sp. 2. p. 224.
Hab. Mexico and West Indies iL t e f o r f T h aW r T p
K p . (L ite .) A— ,
straw-coloured or r e d d is h - b i^ , numerous
falling short of the apex of the segm.-Hk. Sp. 2. p. 221. f. 139.
are very much larger, so frèm one ot Dr. Spruce’s notes, that this also is
rachis into numerous linear W e i i • upper lat. pinnæ 6 in. 1., not cnt
more br., spinuloso-serrated 'vL®" cutting the termina l one,
down to the rachis 1 ^ ft. 1. ; texture subcoriaceous ; rachis
of the points of the segments.— H k . Sp. 2. p. 223.
Hab. Tropical America from Panama southward to Ecuador.
1 barren ; Ut pinnoe ut. divisions 2 ft. 1., deltoid ; texture
■ p w » ? n e a r ly 2 in. l., moie t h a n ^ i n . , „eins fine, anastomosing
S T S r - i ¿ - t o n i e T / T o f the s e T e n t s . - « / . 2. p . 217.
P. crassipes, A g . H k . I. c.
Hab. West Indies and Columbia southward to Peru.
SS8SSSS Amphiblestra, 7W . Veins copiously anastomosing, with free included
v e in le t s . Sp. 84. T ab . I I I . f. 81. !• _
» , p . ( i . , . h h ) I - : « » , Ï . T . X S ™ . . ;
p a i r o f l a t e r a l the former with ^ o sometimes
■ parallel, about 1 in. apa rt.—t d i d l i c i , X XXI« xvjyv- « / . SXp. 2. p. 233.
H ab . V en e zu e la ; g a th e red firs t by H um b o ld t an d Bo n p lan d .
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