FERNS DRYOPTERIDACEAE

POLYSTICHUM RIGID FERN WITH SPINULOSE SEGMENTE INDUSIA ROUNDEG ATTACHED AT MIDDLE POLYSTICHUM FROM GREECK,MANY ROWS

POLYSTICHUM LONCHITIS  SIMPLY PINATE LOWER PINNAE REDUCED

 POLYSTICHUM ACROSTICHOIDES PINNATE LOWER PART NOT REDUCED

 POLYSTICHUM ACROSTICHOIDES

POLYSTICHUM ACROSTICHOIDES

POLYSTICHUM SCOPULINUM BIPINNATIFID  CORIACEUS BLADE

 POLYSTICHUM BRAUNII  BLADE BIPINNATE HERBACEOUS

 POLYSTICHUM BRAUNII

POLYSTICHUM BRAUNII

2- DRYOPTERIS BLADES ERECT 2-3 PINNATE IF INDUSIUM PRESNTE RENIFORM SHAPE

A- INDUSIO PRESENT BLADE MEMBRANOUS

DRYOPTERIS NOVOBORANENCIS  DLADE REDUCED At base FREE VEIN

DRYOPTERIS THELYPTERIS   NOT REDUCED AT BASE,VEINS FORKED

DRYOPTERIS SIMULATA BLADE NOT REDUCED ,VEINS FREE

B- INDUSIUM PRESENT BLADES FIRMER OR SUBCORIACEOUS

DRYOPTERIS FRAGANS SMALL AND RACHIS CHAFFY LEAVES

DRYOPTERIS CRISTATA INDUSIA FLAT BLADE LINEAL SORI MEDIAL FORKED VEIN

DRYOPTERIS CLINTONIANA INDUSIUM FLAT BLADE ATTENUATE VEINS FORKED

DRYOPTERIS GOLDIANA INDUSIUM FLAT BLADE ABRUPTLY ACUMINATE

DRYOPTERIS MARGINALIS INDUSIUM CONVEX ,SORI NEAR MARGINS VEINS FORKED

DRYOPTERIX FILIX-MAS SORI NEAR MIDVEIN FORKED 

C- INDUSIA PRESENT BLADE 2 A3 PINNATE SPINULOSE SEGMENTS

DRYOPTERIS SPINULOSE BLADE TRIANGULAR SORI TERMINAL ,SCALY PALE

                                                     INDUSIUM GLABROUS

DRYOPTERIS DILATATA  BLADES TRIANGULAR SORI SUB TERMINAL SCALY 

                                                BROWNISH INDUSIA GLABROUS

DRYOPTERIS INTERMEDIA BLADE TRIANGULAR INDUSIUM GLANDULAR

DRYOPTERIS BOOTTII BLADE ELONGATE ATENUATE AT BASE

D- INDUSIUM ABSENT BASAL PINNATE SESILE OR ADNATE

DRYOPTERIS PHEGOPTERIS BLADE  LONGER THAN BROAD PILOSE

DRYOPTERIS HEXAGONOPTERA BLADE BROADER THAN LON PUBESCENT

E- INDUSIA WANTING  PINNA STALKED

DRYOPTERIS DRYOPTERIS BLADES NEARLY HORIZONTAL GLABROUS

DRYOPTERIS ROBERTIANA BLADES SUBERECT GLANDULAR