34 
§. 2 . Cten op tei'is. JEupteris vel JVeuvoptevis. ( 8 - 90 ) 
I. Folia dichotoma. (8 — 9.) 
8. P. nwltifidum Bor. voy. d. Pils. d’Afriq. II, 103. T. 20. 2. Kz. f. 90. T. 43. 1. 
Rhizoma adscendens, tenerum, paleis lanceolato - subulatis, rufidis onustum; folia 
coriacea, glabra; petiolus 1 — 2"' longus; lamina 1 — 2" longa, spathulato-linearis ; obtusa 
vel lanceolata, indivisa vel dichotoma, segmentis sensim attenuatis; nervi secundarii 
Sphenopteridis indivisi, inferiores steriles, superiores fertiles; sori infraapicales, oblongi, 
majusculi, margini approximati, receptaculo manifesto, parce setoso, impositi. 
P. furcatum Dsv. Ann. Linn. VI, 230. 
Ins. Bourbon. 
9. P. furcatum. 
Rhizoma adscendens, caespitosum; folia 2— 3" longa, 1 — l/V" lata, rigidiuscula, 
glabra, lineari - lanceolata, indivisa vel plerumque dichotoma; segmenta integerrima, 
sinuato-crenata vel lobulata; nervi Sphenopteridis indivisi, infra apicem soriferi, rarius 
furcati, ad furcaturam vel in ramo antico soriferi, ramo postico sterili plerumque abbre- 
viato; sori oblongi, costae paralleli, eique approximatae. 
Grammitis Hk. et Grev. ic. 62. Hk. gen. 72. B. 1. 
Gujana. 
II. Folia indivisa. Sori dorsales. (10 — 23.) 
a. Nervi secundarii apice attenuato desinentes (10 — 16.). 
10. P. marginellum Sw. Fl. Ind. occ. 1631. 
Rhizoma adscendens, caespitosum, paleis lanceolato-subulatis, rigidis, ferrugineis 
onustum; folia 1 — 8" longa, 2 — 4"' lata, breviter petiolata, spathulata, obtusa vel lan- 
ceolata, integerrima, margine calloso, ebeneo, ciliata, denique glaberrima, in parte 
superiore fertilia; nervi secundarii costaeformes, tertiarii immersi, soros oblongos, costae 
parallelos, eique approximatos, gerentes. 
Grammitis Sw. syn. 22. W. V, 139. Schk. 8. T. 7. G. limbata Fee gen. 233, mem. VI, 6. 
T. V, 1. Mecosorus marginellus Kl. Linn. 20. 405. 
Antill. Americ. austral. 
