i f .
Li'f-
A C R O S T IC H U M . Pvesl.
A c r o s t i c h i s p . L in n , et Aiiet.
S o ru s supevficiarius, totam paginam inferiorem frondis obtegens. S p o ra n g ia ere-
berrima, p e d lc e lla ta .-F iU c e s p ræc ip u e intratropicæ. Frondes sparsæ, coriaceæ,
simplices a u t p in n a tæ , a u t similes, pinnis v el omnibus vel superioribus fe rU h te s ,
a u t (in A. Requiniano) dissimules, pinnis frondis fertilis angustioribus. Venae
tenues, ramosissimæ, venulisque æquilatis, in maculas hexagonoideas latitudine
longiores anastomosantes,subtusp a rum eU v a tæ . S p o ran g ia sæ /c t o t e
pedicellatis stellato-multifidis in te rm ixta , p r im o aurea, demum fu s ca . P r e s .
A c r o s t i c h u m aureum. L in n . ( T a b . L X X X I . A . ) Wall. Oat. n. 3 1 .
Thus reduced, the Genus Acrostichum consists of few species, the Linnacan A. aureum
being considered tbe type.
Tab L X X X I A .-F ig . I. Under side of a fertile p in n a; nat. size t f . 2 - 6 . Sporangia and
pefficdla^cd S e s or glands; / . T. Sporules / . 8. Sterile pinna ; nut. rtVe.. / 9. P o rtion
of a sterile pinna -.—magnified.
T A B . L X X X I . B.
P O E C I L O P T E R I S . L schw . Pre sl.
A c r o s t ic h i sp. L in n , et A u c t. B o l b i t i s . Schott.
Sorus superficiarius, paginam inferiorem frondis dissimilis obtegens. S p o ra n g ia
creberrima, p e d ic e lla ta .-F ilic e s T ropicæ. Frondes sparsæ, herbaceoe, simplices
a u t sæpius p in n a tæ , d i s s i m i ü e s , ^ frondis sterilis p ræ s e rtim te rm in a li tern
elongata apiee p r o l i f e r i et radicantibus, frondis fertilis p a ueioribus angustiorib
u s integerrimis nunquam radicantibus. Venae p in n a tæ . Venulæ prominulee
a u t internoe in maculas ir reg u la r ite r angulatas anastomosantes,maculishinc inde
venulam secundariam liberam apice globuloso-incrassatam emittentibus. P r e s l.
Pcecilopteris fr a x in ifo lia . P re sl. ( T a b . L X X X I . B.) Acrostichum fraxinifolium.
P r e sl. A. serratlfolium. Mert. Bolbitis serratifoha. Schott.
Very nearly allied, as Presl observes, to his Acrostichum; but distinct in the reticulations
of tbe veinlets.
T ab . L X X X I. B .— T i g . 1. F e r t i l e p in n æ , s e e n f r o m b e n e a th ; n a t size -, f . 2 - 4 . S p o r j g i a , a n d
f . 5. S p o r u le s ; magnified ; / . 6. S t e r ile p in n a ; n a t size -, f . l - P o r t io n o f d o . -.-magnifie .