122 2 1 . ADIANTUM, § EUADIANTUM.
1
naked, dark chesnut-brown ; f r . 4-6 in. 1., | in. br., with a termina l lobe ana
numerous subopposite pairs of pinnoe, the lower ones distant, distinctly stalked,
^ iu. 1., ¿ - | in. br., hastate-deltoid, cordate or cuneate at the base ; texture
pellucido-herbaceous; venation flabellate; sori in interrupted lines along the
sides of tlie pinnm, not reaching the rounded apex.—Y7/1-. Sp. 2. p . 9.
H ab . W e s t In d ia n Is lan d s .—Stem casually once b ran ch ed below. A v e ry clearly-
m a rk ed species. The pinnæ resemble an ivy-leaf in m in ia tu re , b u t th e re is no clearly-
defined c e n tra l midrib.
t t Segments dimidiate, with the line o f f r u it absent altogether from the lower
margin. Sp. 37-40.
37. A. villosim, Linn. ; st. 9-12 in. 1., strong, erect, blackish, polished,
tomentose ; f r . with a terminal central and several erecto-patent pinnoe on each
side, 6-12 in. 1., lJ -2 in. br. ; pinnl. dimidiate, about 1 in. 1., ^ in. br., the lower
line nearly straight, the upper nearly parallel with it, but considerably larger,
slightly toothed aud the outer edge auricled at the base ; texture coriaceous ;
rachises tomentose, both surfaces naked ; sori in a continuous line round the
upper and outer edge.—H k . Sp. 2. p . 18. A. falcatum, Sw. S. F. p . 19.
Hab. West Indies and Panama southward to Brazil.—Easily recognizable by having
the line of fiuctificatiou continued all along the upper and then usually down the oblique
outer edge. A. ohlique-truncatum, Fée, seems to be the ordinary form of this species.
38. A. pulverulentum, L. ; st. 6-12 in. 1., strong, erect, blackish, tomentose;
f r . with a terminal p inna and several spreading lateral ones on each side, which
are 4-8 in. 1., 1 in. h r .; pinnl. in. 1., 1-^-2 lin. deep, dimidiate, the lower line
nearly straight, the upper one nearly parallel, both it and the outer edge finely
toothed ; texture subcoriaceous ; rachises tomentose, surfaces naked ; sori in
a continuous line along the lower two-thirds of the upper edge.—H k . Sp. 2.
p . 17.
Hab. West Indies southward to Brazil.—Here the line of fruit does not usually extend
beyond the inner half or two-thirds of the upper margin.
39. A. incisum, Presl ; st. 4-6 in. L, wiry, polished, naked, nearly hlack ; fr.
6-12 in. 1., 3-4 in. br., simply pinnate or with one or two pairs of short spreading
branches a t the base ; pinnoe 1-2 in. 1., ¿ -J in. deep, subdimidiate, the lower line
often considerably curved upwards and toothed in its outer half, the upper one
also more or less falcate and not deeply lobed ; texture subcoriaceous ; rachis
nearly naked ; sori in a continuous marginal line on the edge of the lower two-
thirds of the upper margin.—I lk . Sp. 2. p . 10. A. alarconianum. Gaud.
Hab. West of Mexico and Columbia, Galapagos Island.—Very near A. {puherulenhm,
with which it quite agrees in the fruit. The frond is less branched, and the pinnules
are larger and more toothed.
40. A. microph/lhim, Kaulf. ; st. 6-9 in. ]., strong, erect, tomentose ; f r . with a
terminal pin n a 6-9 in. 1., and several eiecto-patent lateral ones on each side, the
lowest of which are branched again ; segm. in. ]., J- in. br., unequal-sided,
with a midrib, the lower at first at a right angle with the stem and afterwards
decidedly upcurved, the upper nearly entire, upcurved, so th a t the segment is
falcate and narrowed to an acute point ; texture coriaceous ; rachis tomentose or
nearly naked ; sori in a few elongated patches along the upper edge.—H k . Sp. 2.
p. 47.
Hab. West Indies, rare.—Very doubtfully distinct from A . pulverulentum. In babit
and general appearance they are identical, but this has the line of fructification slightly
interrupted. Grisebach suggests that this is probably A. pyramidale, Willd.
***** Capillus- Veneris group. Fronds at least bipinnate, segments
cuneate, with the petiole near the centre, sori obversely reniform. Sp. 41-51.
41. A. Capillus-Veneris, L. ; st. suberect, ra th e r slender, 4-9 in. 1., polished,
blackish, naked ; f r . with a short terminal and numerous erecto-patent lateral
branches on each side, the lowest slightly branched again ; segm. -¿-1 in. br., the
base cuneate, the outer edge rounded, deeply lobed from the circumference in
the direction of the centre, and the lobes agam bluntly crenated, lowest petioles
¿ in. 1. ; texture pellucido-herbaceous ; rachis and both surfaces naked ; sori
roundish or ohreniform, placed in roundish sinuses of the crenations.—H k . Sp. 2.
jo. 36. B rit. F . t . 41. A. pseudo-capillus, /co«. 1 2 ./. 1.
Hab. Europe, from S. W. Britain, Jura, and Tyrol, to Greece, Sicily, and Portugal.
Africa : Abyssinia, Western Islands, Niger Valley, Angola, Cape Colony, Natal, Zambesi
Land, Mascaren Isles, Barbary States. Asia : Caucasus, Ural, Syria, Persia,-
Arabia, Himalayas (up to 6,000 ft.), Bombay, S. E. China and Japan, Polynesian
Islands. America : Florida southward to Venezuela and, Amazon Valley.—A. Capillus-
Junonis, Rupreclit, has the base of the pinnules somewhat rounded instead of cuneate,
ami a veiy deeply-lobed variety is figured by Hooker Sp. Fil. 2. t. 74. B.
42. A. Æthiopicum, L. ; st. 6-9 in. 1., ra th e r slender, erect, dark chesnut-brown,
polished, naked ; f r . 12-18 in. 1., 6-9 in. hr., deltoid in general outline, tri- or
quadripinnate ; lower 3-4 in. L, 2-3 in. br., deltoid ; ultimate segm. in.
across, ¿ in. deep, suborbicular, straight or subciineate or rounded at the base,
the upper pa rt broadly, not deeply lobed ; texture thinly pellucido-herbaceous ;
rachis and surfaces naked ; sori in several roundish or transversely oblong
patches in rounded hollows of the outer edge.—H h . Sp. 2. p . 37. t. 77. A. A.
assimile, Sw. I lk . Sp. Fil. 12. p . 37. A. emarginatum, Bory, I lk . Sp. 2. p . 80.
t. 75. A.
Hab. Spain ; Africa—Cameroon Mountains at 7,000 ft., Natal, Cape Colony, Abyssinia,
Zambesi Land, Bourbon and Madagascar ; Neilgherries, New Zealand, Temperate and Tropical
Australia ; America, from Texas and California southward to Valparaiso and Monte
Video.—Very like A. Capillus- Veneris in general habit, but the segments are more tender,
smaller, broader at the base, and not so deeply lobed. A. Chilense, Kaulf., A. glanduliferum,
Kunze, A. dilatatum, Nuttall, A. scahrv,m, Kunze, and A. sulphureum, Kaulf.,
appear to be forms of this with the segments hairy or more or less dusted over with
white or yellow ceraceous dust beneath.
48. A. excisum, Kunze ; st. 2-3 in. I., wiry, chesnut-brown, naked, densely
tufted ; f r . 6-12 in. 1., 3-4 in. br., with numerous flexuose short branches on
each side, the lowest of -wdiich are slightly branched again ; segm. 2-3 lin. hr.,
broadly cuneate a t the base, the upper edge rounded and bluntly lohed ; texture
th in ; rachis naked, polished ; sori 2 to 4, large for the size of tlie plant,
obversely reniform, placed in distinct hollows on the lobes.—Hk. Sp. 2. p. 41.
Hab. Chili.—Perhaps this also should be considered a variety of Æthiopitywm, but it is
smaller and more slender, and in habit resembles A. concinnum, the lateral branches of
the pinnæ being but little C
44. A. concinnum, I I. B. K . ; st. 4-8 in. 1., polished, blackish, naked ; f r .
12-18 in. 1., 6 -9 in .b r ., ovate-deltoid, trip in n a te ; pinnoe numerous, spreading,
flexuose, the lowest 4-6 in. L, 2-3 in. hr. ; segm. J - f in. across, broadly cuneate
a t the base, the upper edge irregularly rounded, deeply lohed and the lobes again
crenate,_ the lowest segment of each pinna and pinnule large, sessile, adpressed to
the main rachis ; texture papyraceo-herbaceous ; rachis naked, glossy ; sori
numerous, obversely reniform, placed in distinct hollows of the outer edge.—
Hk. Sp. 2. p . 42.—¡3, subscandens; f r . 4-5 ft. 1., subscandent.
Hab. Tropical America, from Mexico to th e W e st In d ie s, so u thw ard to P e ru an d
Brazil.—¡3 is a p la n t collected by Spruce a t th e foot of M o u n t Chimborazo (No. 5706),