550 ANEURA. 
subalata, sectione lanceolata, medio 6-7 cellulas crassa; pinnee oppo- 
sitee, dissitee vel superiores subimbricatee, ambitu deltoideo-ovatee, 
pinnatipartitee, laciniis utrinque 3-5, angulo 45° patulis, subconti- 
euis, linearibus retusis emarginatisve, infimis seepe bifidis, aliis apice 
attenuato incurvo gemmiparis, tenuicostatis (costa pinnarum 4-5e. 
lata, 4-5c. crassa, laciniarum 4c.—apicem versus solum 2c¢.—lata, 
1-8c. crassa), hmbo 4-5e. lato, margine late crenato erosove; cellule 
magne subequilateree subpellucidee. 
Flores dioici: 9 pinnulis pinnarum superiorum duabus infimis abbre- 
viatis constantis; involucrum seepius ad squamas 2 digitifidas redac- 
tum, raro squamis exterioribus auctum. Calyptra pinnis sterilibus 
ferme eequilonga, clavata, sat crassa, apice alte mammillata, facie 
papillis pecnon squamulis membranaceis (seepe bifidis) conspersa. 
Obs. In eodem cespite advenit forma luxurians ejusdem (?) speciei, 
pinnis duplo majoribus flabellato-bipinnatipartitis, saepius imbricatis, 
laciniis confertis. Caules validiores, medio 10c. crassi, sectione anguste 
ovali, inferne rarius subalati. Calyptra paulo minus papillosa.—A. papil- 
lata G. in Hep. Nov. Gran. differt statura elatiore, pinnulis laticostatis 
integerrimis; calyptra longissima, papillis preelongis (squamulis nullis) 
obsita.—A. andina 8. ab A. lepidomitra parum distat, nisi caule ubique 
exalato et papillis calyptrae nunquam in squamulas foliaceas transmu- 
tatis. 
13. ANEURA MACROSTACHYA, Spruce. 
Hab. in truncis emortuis ad S. Gabriel del Rio Negro: planta mascula 
sola. 
Ab Aneura amazonica, affini, distat statura plus duplo minore, colore 
viridi-olivaceo opaco ; caule inordinatim bipinnato, flexuoso, ramis seepe 
brevibus, limbo vix ullo nisi ad lacinias ultimas; cellulis chlorophyllosis, 
ad caulis axin 5-stratis, ad lacinias 3-4-stratis, costalibus duplo angusti- 
oribus (3}™™") quam A. amazonice ; andreeciis seepe preelongis (alveolis 
ad 17-jugis) recurvantibus. 
14. ANEURA CERVICORNIS, Spruce. 
Hab. Andes Quitenses, in monte Tunguragua, ad truncos putrescentes ; 
Pichincha, ad scopulos humectatos. 
Pinne ad ™ longa, basi 38" late, 13™™ crasse; pinnule *15™™ late ; 
cellule 32-7), ; calyptra 3:0 x 0°7; elateres *3--4™™. 
25 
Cyespitosa olivacea rufulave rigidula, facie algoidea. Frondes 14-4°™ longe, 
basi decumbentes subdivisze (vix rhizomatosie) dein erecta et laxe- (vel 
plumiformi-) tripinnatze, fertiles humiles, steriles elatiores. Caulis ex- 
alatus, inferne nigrescens, compressulus vel subteres, sectione oblonga 
cellulis 7-14 in diametro; cellule corticales parvule subpellucidee 
parum elongatee; sequuntur strata duo cellularum longiorum dis- 
colorum; cellule autem axiales pluristratee majores pellucidee lineari- 
elongate, pro majore parte prosenchymaticee. Pinna pinnuleque 
opposite vel alternse plerumque decurvo-secundee, in sicco saepe apice 
circinate, anguste lineares biconvexe; illa ad costam solam (sectione 
lanceolata) medio 7-8 cellulas crassam redactze ; hae (pinnulve) seu- 
sim angustiores et tenuiores, medio 4-cell. crassee, exalatee vel superne 
limbo solum 1-2c. lato alate, repandulee; cellule superficiales 
minores subopaci, interiores majores longiores et pellucidee. 
