I'
III
hit
TAB, LXXXVr.
A C R O S T I C H UM J AME S O N L
FILICES.— G y r a t æ . Br. P o l y p o d i a c e æ . Kaulf. E i l i c e s v e ræ . Willd., Spreng.
G e n . C h a r . A C R O S T I C H U M , Liiin . S o r i am o rp h i, s eu C a p s u læ p e r to tam p ag in am in fe rio
rem fro n d is ( in te rd u ra diversæ) vel e ju s p a r tem spa rsæ. I n v o lu c r u m n u llum (n isi sq u am u læ
vel s e tæ in q u ib u sd am c ap su lis in te r s tin c tæ ) . B r .
A c r o s t ic h u m J a m e s o n i- , p ilo so -sq u am o sum , fro n d ib u s s im p lic ib u s c o s ta tis , s te rilib u s o b lo n g o -
sp a th u la tis , fe rtilib u s e lliptic is m a rg in a tis d em um co n d u p lic a tis.
H a b . R u p ib u s p ro p e b a s in m o n tis P ic h in c h a r e g n o Q u ite n s i. D . J a r n e s o n .
Planta cæspitosa.
Stipes duas ad tres uncias longus, erectus, paululum flexuosus, gi-acilis, squamosus, squamis lanceolatis, raembra-
naceis, serratis, nei-voso-reticulatis, fuscis.
Frondes vix unciam longæ, costatoe, enerves.
Siet-ilcs oblongæ, obtusæ, virides, utrinque margineque squamosa, squamis brevioribus latioribusque quam in
stipite.
Fertiles sterüi breviores, elliptica, fuscescentes, peDucido-marginatæ, dorso margineque fusco-squamosis : primum
explanatoe, demum, capsulis maturis, longitudinaliter conduplicatæ.
Capsidoe numerosissima, intense fuscoe, globosæ, annulo lato cinctæ, breviter pedicellata.
Semina fusca, subvotundata, tuberculata.
Fig. I. Squama e stipite, f. 2. Squama e fronde, f. 3. Capsulæ. f. 4. Semina:—magn. auct.
C om m u n ic a te d , w ith seve ra l o th e r ra ritie s o f th is family, f rom S o u th A m e ric a by W illiam J am e so n ,
E sq ., r e s id e n t a t G u ay aq u il. T h e spe c ie s is u n q u e s tio n a b ly v e ry n e a rly a llied to A c r o s t i c h u m o b tu s
a t u m , fig u re d a t T a b . 2 2 . o f th is w o rk ; b u t th a t, be side s its widely d iffe rent g eo g ra p h ic a l s itu a tio n
( th e I s la n d o f T r is ta n da C u n h a ) , h a s few e r a n d n a rrow e r scales u p o n th e fro n d a n d s tip e s , a lo n g e r
p ed ic e l to th e c ap su le s, a n d a m u c h le s s d is tin c t c o s ta o r m id rib i a n d it w an ts th e p e llu c id m a rg in
to th e fe rtile fro n d s , wh ich is so d is tin c t iu th is .
M r . J am e s o n h a s r em a rk e d a cu rio u s p ro p e rty ' in th e f e rtile fro n d s . “ W h e n th e p la n t,” h e says,
“ is in a y o u n g a n d te n d e r s ta te , th e ir f ro n d s a re in v a riab ly e .v p a n d c d ; b u t as so o u as th e seeds
b e g in to rijien , th e y c o lla p s e , as in th e sp e c im en s s e n t a n d a s th e g e n e ra lity o f th o s e h e re
figured.
T ill“ A c r o s t i c h u m p ilo s c llo id c s o f P rc s l. { R e l iq . H a n k ) , A . P ilo s e l la , S p ren g ., a P e ru v ian
p la n t, diflcrs from th is in its a lm o s t se ssile a n d sp a th u la te s te rile f r o n d s ; a n d th e A c r o s t i c h u m
s p a th i d a tu m o f B o ry (from th e Is le dc Bom-boii), b y its m u c h la rg e r size a n d d ifte ren tly -sh ap cd
fro n d s. T h e y sh o u ld , h oweve r, all to g e th e r , w ith o u r A c r o s t . R a d d ia n u m , r a n k n e x t to each o th e r
in a n a tu ra l system.
M i .
t l
i l