Trichomanes. | FILICES. 635 
globose. Rhizome with a single fibro-vasal duct, bearing hairs instead 
of scales. 
A large genus, chiefly of the tropical zone and of damp localities in the southern 
temperate zone. 
Frond orbicular in outline, very small . z . : : ; 1. T. parvulum. 
Frond lanceolate Ne oblong 
Stipes and rhac is fibrillos ose; rhizome ‘ 5. T. meifolium. 
to 
Stipes sat Pe naked or near - 80; pee: creeping : 
Frond small, 2—3’ long T. Draytonianum, 
= maton ete ag 
ng: 
Frond narrowing below, dark-gree 
yrtothec 
Frond broad below, brow nish ee dry 
1. T. parvulum, Poir. — Hook. Sp. Fil. I, 118, tab. 39, A. -- Rhizome 
slender, creeping, densely matted, tomentose with dark-brown fibrils. 
Stip. scattering, filiform, fibrillose at the base, '/s—1/2‘ long. Frond or- 
cuneate or truncate or cordate at the 
rb i 
icular in outline, 3—4” each way, 
base, flabellat ny cut more than halfway down from the outer edge in 
the direction of the base into narrow unequal segments. Veins dichotomous, 
close, prominent, so that the frond when dry appears channelled, with 
some spurious veins parallel to them. Sori 2—6 to a frond, terminating 
the central segments, the tube quite sunk in the frond, slender, wit 
. S. E. E. p. 250. 
dilated mouth. — Synops. Fil. p. 75. — Brack. Fil. 
a aries Gas — oT saxifragoides, Presl. — More rarely ‘the frond 
lengthen t and is cut in a subpinnatifid manner. 
eae tre rocks, delicate moss-like fern, ee epi put in some — of 
e Hilo nis rict, Hawaii, covering entire rock-w: also * Tahiti, Samoa, 
sok ii ina Australia, Japan, China, Java, Ceylon, ution gare ascar. 
2. T. Draytonianum, Brack. Vil. U. S. EH. E. p. 252, gh. 36. — 
Rhizome creeping, densely matted, rather slender and tomentose with 
short articulate er brown fibrils. Stip. scattering, slender, green, winged 
above, 1/4—1‘ long. Frond flaccid, bright-green, lanceo ate, broadest at 
the middle, 2—3'  !/2—1'‘, bipinnatisect, with the main rhachis m 
throughout. Primary segments patent, rhomboidal to ovate-lanceolate, 
obtuse, broadly adnate with the upper base, horizontally cut at the lower, 
deeply notched into deltoid oblong and cuneate lobes, rarely again pinna- 
d at the hye apex into 2—4 blunt 
s to it, ne or twice 
a 
nvol. green, broad-cam- 
segment. 
its mouth dilated but scarcely 2-lip 
anulate, laterally winged, 
3 seen I Dp. 418. 
Columella short, little or not exserted. — Luerssen, in Flora, 1875, 
ossum Draytonianum, Van d. Bosch. 
rocks; rare. Kauai! W. Maui! Molokai! Kalae. = ~ Synopsis Filicum page 
is joined with T. filicula, Bory, but without good reaso e entire mouth of the in- 
