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A D I A N T UM C U N E AT UM.
FILICES.— G y h . \ t ® . Br. P o l y p o d i a c e æ . Kaulf. F i l i c e s veræ. Willd.
G e n . C h a r . Sori m a rg in a le s , p u n c tifo rm c s vel liiicares. Involucrum e m a rg in e fro n d is replic a to,
disco ven o so c ap su life ro , lim b o mem b ran a c eo lib e ro . B r .
A dia ntum cuneatum-, fro n d ib u s trip lic a to -p in n a tis , p in n u lis p c tio la tis c u n e a tis mem b ran a c e is apice
ro tim d a tis la c in ia to -b i-trilo b a tis , lobis p ro fu n d e em a rg in a tis segm en tis fa lc a to -in cu rv is, sinubus
sorife ris, in v o lu c ris ren ifo rm ib u s.
A d ian tum c im c a tum . “ Langsd. et Fisch. le . FU. p . 23. t. 2 6 .” JVilld. Sp. PI. v. 5. p . 450.
Raddi Fil. Brasil, p . 5 9 . 1.18. f . 2 . Kaulf. Enum. Fil. p . 2 0 6 .
H ab. I n B ra s ilia . Langsdm-ff et Fischer, Chainisso, D “ M . Graham, Burchell. In s u la S an c ti
V in c en tii. Rev . L . Guilding. C u l t . In H o i t . B o t. L ive rpool.
R a d ix su b cæsp ito sa, fibrosa, fibris ramosis, tomentosis.
Caudex dig italis ad p a lm arem , ere ctu s , g rac ilis, a tro p u rp u reu s , n itidus.
Frons, c ircum sc rip tio n e , ov a ta vel su bd e lto id e a, trip lica to -p in n ata .
R a ch is p e iiolk \vie g ra c d lb n i, atro -p u iq ju re i, n itid i.
P in n tdoe b rev ite r p e tio la tæ , du a s ad q u a tu o r liiieas lo n gæ , m em b ran a ceæ , g la b ræ , dich o tomo -n erv o soe, cu n ea tæ,
la te rib u s n u n c inoe q ua lib u s, ap ice in c iso -lo b atæ, lo b is du o b u s vel trib u s ; in fro n d ib u s sterilibus, su b d en tatoe ;
in fe r tilib u s , p ro fu n d e em arg in a tis, segmen tis falcato-incurvis, s in u b u s fructiferis.
In vo lita nm ex ac te ren ifo rm e memb raiiac eu ra, p a llid e fuscum, maju scu lum, a re te inflexum.
Cap su la in disco in v o lu c ri, sp liæricoe, fere sessiles, reticu la toe, a n n u ia te , a n n u lo incompleto.
Semina o b lo n g o -ro tn n d a ta , vel subreniformia.
F ig . 1 . P ia n ta ju v en is. f. 2. P ia n ta a d u lta fi-uctlfe ra :—magn. n a t. f. 3. P in n u la . f. 4. In v o lu crum , in tu s visum.
f. 5 . C ap su la , f. 6. S em m a :— mag>i. auct.
T h e re a p p e a rs to us to be g re a t difficulty in d e te rm in in g th e species o f th e g en u s Adiantum
w ith o u t th e aid o f figures ; espe c ia lly o f th a t division w h ich includes o u r E u ro p e a n A . Capillus
Veneris, an d wh ich d iv ision o r g ro u p is c h a ra c te riz ed b y h a v in g p c tio la te d p im m le s o f a th in m em b
ran a c eo u s te x tu r e , a n d m o re o r le ss reg u la rly cu n é a te in form.
T h e p re s e n t p la n t is allied in g en e ra l ap p e a ran c e to th e spe c ie s ju s t m e n tio n e d , A . Capillus Verteris,
b u t may be d is tin g u ish e d by its m o re c om p o u n d fro n d , sm a lle r p in n u le s , and, e ssen tia lly , b y th e
sori b e in g pla c ed in th e b o ttom o f th e s in u s o f th e n o tch e s . S till n e a re r does it ap p ro a ch to th e
A . assimile o f N ew H o lla n d (th e A . irigonwn o f B ilia rd iè re , Nov. Holl. t. 248.) ; a n d I scarcely
k n ow how th e y may be re co g n iz ed , b u t by th e m o re de cided lobes o f th e p in næ o f o u r p la n t, and
th e m uch d e ep e r u o tc lie s , w ith in wh ich th e f ru c tific a tio n is in s e r te d : add, to o , th a t th e s egm en ts o f
th e s e lobc.s a re so in cu rv ed a n d m e e t to g e th e r in such a m a n n e r as to re n d e r th e n o tc h its e lf a lm o st
obso le te ; so th a t a t first s ig h t th e in v o lu c ra se em to be intram a rg in a l, o r u p o n th e d isk o f th e
pinnuUv.
In B ra z il, tin- A . cuneatum ap p e a rs to be n o t uncom m o n ; and we liave re c e iv ed a n Adiantum,
which wc c an in no way distingui.sh from it, from S t. V in c en t, s ent by th e R ev . L. G u ild in g . T h e
Me ssrs. S h ep h e rd s received th e p lan t from M. O tto o f Be rlin, u n d e r th e n am e o f A . pendulinum.