548 ANEURA. 
Elata tenuis pallide viridis czespitosa. Frondes 6™ longee, ambitu lato- 
lineares, erectee penduleve, in planum bipinnate; caulis plano- 
convexus, sectione semilanceolata, vel supra leniter convexulé, medio 
8 cellulas crassus, exalatus vel hic illic angustissime alatus ; pinne 
subdistantes oppositze, medio 6 cellulas crassee ; pinnulze 3-jugee sub- 
oppositee, erecto-patentes, simplices, raro furcatee, anguste lineares vel 
lineari-subulatee, peranguste alata, costa 4 cellulas crassa, alis 2-3 
cell. latis, 2-1 cell. crassis; cellule alares et supracostales mediocres 
subzequilateree pellucidee, costales longiores latioresque subopace. 
Fl. dioici: 9 ad spicam brevem (pinnulam pinnarum infimam contractam 
sistentem) biseriati, involucro angusto in lacinias subulatas filifor- 
mesve hamatas utrinque obtecti, pistillidiis ad 12—jugis. 
Calyptra pyriformi-clavata, carnosula, tuberculis papillisve perraris con- 
spersa, apice angustiusculo mammillata. Capsula plus duplo brevior 
elongato-ovalis. 
Aneura plumeformis duplo fere elatior, longe robustior, colore fusco, 
caule subtereti tripinnato, pinnis pinnulisque confertis late alatis diversa 
est. 
9. ANEURA PLUMAFORMIS, Spruce. 
Hab. In monte Abitagua terrestris: pl. ¢ sola. 
Pinne 12-15™™ longe; pinnule 10-20 x 65; ¢ ps 3 amenta 2:°0™, 
Elata erecta laxe ceespitosa, basi sola radicans, firma, olivacea. - Caules 4- 
pollicares, nigrescentes validi subteretes, inferne simplices bifidive 
dein plumeformi-tripinnati; pinnee primariz opposite, inferiores 
minores dissitee, medi et superiores subaequimagnee, ambitu ovato- 
triangulares vel late deltoidee, plane: convexuleeve, pinnas vicinas 
subimbricantes ; pinnule lacinuleve omnes subcontigue, lineares 
planiusculie, costa 5-6 cellulas lata, 3-4c. medio crassa, limbo utrin- 
que 4-6e. lato pellucido ; cellule limbi subsequilateree majusculee 
ad angulum sub 70° cum costa ordinate. 
Amenta ¢ pinnulis duabus infimis cujusque pinne secundarie plerumque 
constantia, ceteris pinnulis angustiora carinata, supra costam pro- 
funde alveolata, utrinque limbo suberecto flexuoso-reticulato repando 
marginata; alveolee biseriatee 9-10-juge, antheridium singulum 
foventes. 
10. ANEURA ANDINA, Spruce. 
Hab. Andes orientales sylvaticos, alt. 300-1500, vix ad mediam regionem 
sylvaticam attingens, ad truncos putrescentes haud raro, locis fluv. 
Bombonasa, montibus Campana, Guayrapurina, &e. 
Caulis sectio 5 x°3; pinne 4:0™™ longe ; pinnule 1:5-2°5 x -4—5 ; cellule 
Fy-ps, ¢ marginales poz; 5 calyptra 2°5 x 55, 3-0 x 6m, 
Cespitosa virescens, siccando nigrescens. Caules 1-1} poll, longi, sub- 
erecti seepe decurvi, compresso-teretes (cellulis 12 x 12 in sectione), 
exalati, basi divisi et rhizomatosi, dein bi-tripinnati; pinns oppo- 
sitee breves anguste alata basi 16 x 8 cellulas in sectione, medio 4-6 
cellulas crassze; pinnulee omnes lineares retusse, medio 3-4c. crasse, 
costa 4c. lata, ala utrinque 4-5e. lata; cellule: alarum mediocres sub- 
oblongo-hexagone subpellucidee, marginales parvule, 
Flores dioici: 2 perseepe binati, oppositi (se. pinnulis cujusque pinne 
infimis abbreviatis constantes). Involucrum in flore fertili brevis- 
simum, in lacinias paucas subulatas filiformesve fissum. 
