262 263 
ACROSTICHUM alcicorne. 
Elk’ s horn Acrostichum. 
ee 
CRYPTOGAMIA FILICES. 
Nat. ord. Frurces. Jussieu gen. 14. Brown prod. 145. Div. I. Gr« 
RATE. (Polypodiacex.) Capsule uniloculares, annulo articulato, elastico, 
longitudinali (plertimque incompleto) instructe 5 transversim irregularitér 
rumpentes. Brown loc. cit. 
ACROSTICHUM. Sori amorphi, seu Capsule per totam paginamt 
inferiorem frondis (interdim diverse) 1. ad ejus’partem sparse, Involu- 
crum nullum (nisi squamule v. sete in quibusdam capsulis" interstincte). 
Brown l. ¢. ; 
A. alcicorne, frondibus dichotomis nervosis apicem versus fructificantibus: 
sterilibus circumdantibus subrotundis lobatis indivisisve: basi suberoso< 
incrassatis. Brown prod.145. | 
Acrostichum alcicorne. Swartz gen. & spec. fil. 12. Ejusd. syn. fil. 196. 
Willd. sp. pl. 5.111. Hort. Kew. ed. 2. 5. 500. : 
Acrostichum Stemmaria. Beauvois,fl. d’ Qware & Benin. 2. tab. 2. 
Acrostichum bifurcatum. Cav. prel. 1801. . 587. ; A 
Neuroplatyceros sthiopicus nervosis foliis’ cornu ‘cervinum referentibus. 
Pluk. amalth. t. 429. f. 2. Schkurh crypt. 1. t. 2. 
Filix structure singularis.. Frondes primordiales steriles, sessiles, pla- 
niuscule, horizontales, spithamee et ultra, sepé reniformes, margine rotun- 
dato s. interdim varie lobato, glaberrime centro subfungoso pulvinato, mol- 
liuscule, versiis margines membranacee, reticulato-venos@. adices et radi- 
cule subtiis congeste, longa, tomentoso-ferrugince. Frondes fructificantes-é 
centro-priorum substipitate s. versus radicem valdé attenuate, sensim dilatate 
palmateque, plane erecte interdim 2 pedales, dichotome laciniis inequalibus 
digitiformibus obtusis, nervose nervis dichotomis elevatis prope basin in sti- 
_pitem. crassum_ teretem concurrentibus: supra glabre virides, subtis incano- 
tomentose, subinde glabra. Juniores omnind lanato-molles, tomento ex villis 
stellatis congestis. . Fructificationes verstis apices Jrondium dorsum laciniarum 
ad partem ». totum tegentes. Capsule minutissime, ferrugineo-rufe, annulis 
nitentibus, in lineis confertissimis quast congeste. Cum Acrosricuo biformi, 
quod OSMUNDA coronaria Muilleri, in quibusdam convenit ; attamen et ab illo 
et ab omnibus aliis huctsque notis certé diversum erit. Swartz Syn. fil. 196. 
5 5 / w . ‘ 
The doctrine of Linnzeus did. not admit of the existence 
of any species of vegetable destitute of either stamien or 
pistil; upon the presence of these he founded his so justly 
celebrated system, an unrivalled effort of ingenuity in this 
department of natural history, and the key without which 
few would have passed the threshold of that. of higher.preten- 
sions. As however in a very large proportion of the: vege-— 
table creation, these floral organs, if really present, are so 
in a form too clandestine to.bave yet allowed of demonstra- 
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