124 21. ADIANTUM, § EUADIANTUM.
it I
which seems strik in g ly different from th e normal form in h ab it, b u t resembles i t closely
in o th e r respects. I n th e shape an d size o f th e pinnules this species is n o t strikingly
diffe rent from A . Capillus- Venens, b u t is p in n a te ly bran ch ed very reg u la rly an d copiously,
an d even when th e pinnæ a re fu rn ish ed with long p innules, th e re is an almo st i
single segmen t a t th e base adpressed to th e main rachis.
45. A. colpodes, Moore ; st. 4-G in. 1. ; slender, glossy, da rk chesnut-brown,
the lower line often straight for some distance, the upper irregularly rounded,
lobed, and toothed, all nearly or quite sessile; texture pellucido-herbaceous;
rachises and both surfaces nake<l ; sori placed in distinct teetli of the outer edge,
the invol. obversely reniform.—Gardn. Chron. 1865.
Hab. Ecuador and Peru.—This has much of the regularly-pinnate habit of A. concin-
num, with which it also agrees in its nearly sessile segments, which in shape resemble
more nearly those of A. Æthiopicum, showing, however, more of a tendency to the
truncato-dimidiate type of form.
46. A. tenerum, Swartz ; st. 1 ft. high, erect, naked, glossy ; / r . 1-3 ft. 1., 9-18 in.
br., deltoid, tri- or quadripinnate ; segm. ¿ - j in. br., cuneate or tending towards
rhoinboidal-dimidiate iu shape, the upper edge rounded or somewhat angular,
broadly and often ra th e r deeply lobed, all stalked ; texture very th in ; rachis
naked and glossy, surfaces naked ; sori placed in numerous roundish or transversely
oblong patches in the lobes of upper half.—H k . Sp. 2. p . 45.
Hab. Mexico and West Indian Islands southward to Juan Fernandez and Peru.—
Resembling A. Capillus-Veneris, but a larger and more branched plant, the segments
smaller, more delicate, and less lobed, easily falling from the apex of the petiole when
dry. The ramification is much more straggling and confused than iu A. concinnum, and
the lower segments have stalks half as long as themsel'/es. A. Farleyense, Moore, appears
to be an abnormal form of this species of garden origin.
47. A. cuneatum, Laugs. & Fisch. ; st. 6-9 in. 1., slender, erect, blackish, naked,
polished ; f r . 9-18 in. 1., 6-9 in. br., deltoid, tri- or quadripinnate ; \o-wev pinnoe
4-6 in. 1., 2-3 in. br. ; segm. numerous, ¿-§ in. br., cuneate a t the base, the upper
edge deeply lobed ; texture th in ; rachis naked ; sori 4 to 6, obversely reniform,
placed in distinct hollows in the lobes of the outer edge.—H k . Sp. 2. p . 89.
H k . é Gr, t. 30.
Hab. Brazil,—This also comes near Æthiopicum, but is a larger and more branched
plant, with numerous pinnæ, pinnules, and segments, the latter usually distinctly cuneate
in the lower half.
48. A. glaucophyllum, Hk. ; st. 6-9 in. 1., blackish, glossy, erect, naked ; fr.
12-24 in. 1., 9-15 in. br., deltoid, quadripinnate ; lower pinnoe 6-9 in. 1., 3-6 in.
br., deltoid, erecto-patent ; segm. ^ in. br., cuneate at the base, the upper edge
irregularly rounded, more or less lobed ; texture papyraceo-herbaceous ; rachises
glossy ; veins prominent, under side glaucous ; sori 4 to 6, obversely reniform,
placed in distinct hollows in the apex of the lobes of the upper edge.—I l k . Sp. 2.
p . 40. Cent. 61.
Hab. Mexico and Guatemala.—Very near A. cuneatum. The principal difference is in
the more rigid texture and more prominent venation, and this is only known in North,
the other in South America.
49. A. fragile, Swartz ; st. tufted, very short, polished, glabrous, blackish ;
f r . 6-12 in. 1., 8-6 in. br., with numerous pinnæ, the lowest of which are
branched again ; segm. articulated at the base, ve ry deciduous, J in. br., cuneate
in the lower half, the upper edge rounded, broadly lobed ; texture papyi’aceo-
herbaceous ; rachis naked ; sori obversely reniform, 2 to 4, placed in distinct
hollows ill the lohes of the upper edge.—/7A Sp. 2. p . 41. Ic. P I. t. 965. A.
parvifuliuin, Fée.
H ab . W e st In d ia n Is la n d s .—T h e segments a re so deciduous th a t th ey have en tirely
fallen from nearly all th e specimens iu tb e H o o k e rian H e rb a rium , so th a t noth in g
remains b u t a dense tu ft of rigid stems w ith nume ro u s slen d e r glossy branches. I n shape
th e segmeuts most resemble those of cuneatum, b u t th e y a re smaller an d less lobed.
50. A. venustum, Don ; st. 6-9 in. 1., slender, erect, wiiy, naked, polished ;
f r . 6-12 in. 1., 4-8 in. br., deltoid, tri- or quadripinnate ; pinnoe erecto-patent,
the lower ones deltoid ; segm. J in. across, cuneate at the base, the upper edge
irregularly rounded, sometimes broadly lobed, finely toothed ; texture subcoriaceous
; rachis naked ; sori 1 to 3, large, roundish, placed in distinct hollow's
of the upper edge.—H k . Sp. 2. p . 40. t. 96. 13. A. microphyllum, Roxh,
H ab . A fg h an istan and Himalayas up to 7 -8 ,0 0 0 ft.—The more rig id te x tu re , th e small
numerous scarcely lobed segments au d few la rg e sori, will clearly d istin g u ish th is from
th e preceding.
51. K: monochlamys, E a to n ; si. 6-9 in. ]., wiry, erect, glossy, dark chesnut-
brown, naked ; f r . 6-12 in. 1., 4-6 in. br., ovate-deltoid, tripinnate ; pinnoe rather
distant, rigid, erecto-patent ; segm. J in, hr., cuneate at the base, the upper edge
rounded, slightly toothed ; texture coriaceous ; rachis naked ; sori single or very
rarely two, placed in a decided hollow of the upper edge.—H k . 2nd Cent. F . t. 50,
A. Veitchii, IJance, A n n . Sc. N a t. Ser. 4. v. 15. p . 238.
H a b . Discovered by th e Am e ric an E x p lo rin g E x p e d itio n u n d e r Capts. R in g g o ld an d
Rogers in J a p a n , an d since g a th e red th e re by M r. J . G. V e itc h an d by M r. Wilfo rd in
Tsus-Sima.—I t comes n e a r A. venustum, b u t seems to be tru ly d istin ct.
****** Scandentes group. Stems scandent, several fe e t long, tri- or quadripinnate
Sp, 52-53.
52. A. digitatum, Presl ; st. 12-18 in. 1., erect, blackish, glossy, nearly naked ;
f r . 2-3 ft. 1., 1 ft. br., furnished with numerous distant spreadmg or erecto-
patent branches, which grow' gradually shorter upwards, the lowest of which are
branched again, the pinnæ being 6-9 in. 1., 3-4 in. br, ; segm. |- 1 in. each waj',
varying from deflexed to cuneate at the base, the upper edge rounded, deeply cut
from the circumference towards the centre, and the lobes again less deeply cut,
the lower ones distinctly stalked ; texture papyraceo-herbaceous ; rachises naked,
glossy ; sori in lines along the edge of the lohes all round, except the base.—
H k .S p .2 . p . A. s p e c i o s u m , 2. 45. 85. C.
H ab . Brazil, P e ru , Bolivia, an d Ecuador.
53. A. Feci, Moore ; st. 12-18 in. 1., strong, scandent, browmish-black,
tomentose ; f r . 1-2 ft, 1., 1 ft. or more br., tripinnate, the main and secondary
rachises zigzag, all the branches firm and spreading a t a right angle ; lower
pinnoe 6-9 in. Î., 3-4 in. br, ; pinnl. 1-2 in. ]., ^ in. br., consisting of a terminal
segment and several distant stalked suborbicular-cuueate lateral ones ; texture
subcoriaceous ; rachises densely brown-tomentose ; sori marginal, roundish or
■ transversely oblong, more than half a line deep,—A. flexuosum, H k . 2nd Cent,
t. 61.
H ab . Mexico an d Guatemala .
******* Pedatum group. Fronds not pinnately branched, hut dichotomously
forked, with numerous pinnoe springing from the upper side o f each o f the two
branches. Sp. 54-56.
54. K. pedatum, Linn. ; st. 6-12 in. 1., polished, dark chesnut-brown, glabrous ;
f r . dichotomous, with the main divisions flabellately branched ; central ^