Flora Zambesiaca

Keys

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Key to Aspidiaceae


1 a Pinna costae (or secondary rhachises) with raised edges on the ventral surface
go to  2
b – Pinna costae (or secondary rhachises) without raised edges on the ventral surface
go to  5
2 a Pinnules dimidiate, articulated; sori oblong-elliptic
FZ account for Didymochlaena
b – Pinnules not dimidiate or articulated; sori circular
go to  3
3 a Indusia peltate; lower pinnae not developed basiscopically
Key to  Polystichum FZ account for Polystichum
b – Indusia reniform; lower pinnae often developed basiscopically
go to  4
4 a Pinnule margins crenate to serrate or if aristate-dentate then lamina not triangular
Key to  Dryopteris FZ account for Dryopteris
b – Pinnule margins aristate-dentate; lamina triangular
FZ account for Arachniodes
5 a Veins free
go to  6
b – Veins anastomosing
FZ account for Tectaria
6 a Hairs on lamina unicellular, needle-like
FZ account for Hypodematium
b – Hairs on lamina multicellular
Key to  Ctenitis FZ account for Ctenitis