1 | Rhizome slender, wide-creeping; some sori elongate |
1' | Rhizome erect, or if creeping thick with fronds near together; sori not elongate. |
2 | Pinnae to c. 6 cm long, nearly all adnate to rachis, lobed not more than 4 to costa |
2' | Pinnae much longer, mostly not adnate to rachis and with adnate pinnules. |
3 | Basal basiscopic pinnules conspicuously longer than next. |
3' | Basal basiscopic pinnules not conspicuously longer than next. |
4 | Copious short capitate hairs present on lower surface of pinna-rachis and costae of pinnules |
4' | All hairs on lower surfaces acicular |
5 | Pinnules on largest pinnae almost free, lobed almost to costa. |
5' | Pinnules on largest pinnae all broadly adnate to pinna-rachis, lobed not more than half-way to costa |
6 | Lower surface of costae hairy; lobes of largest pinnules lobed almost to costule |
6' | Lower surface of costae glabrous; lobes of largest pinnules almost entire. |