40 



POLYPODIACEAE. 



12. Gymnogramme. 



12. GYMNOGRAMME, Desv. 



(Greek gymnos, naked ; gramma, a writing : alluding to the naked sori affixed to the 



veins in lines.) 



Leaves pinnate or bipinnatisect, with the veins free and repeatedly forked ; sori affixed 

 along the centre of the terminal veins and covering them, sometimes appearing marginal ; 

 no indusium. 



Leaves simply pinnate, scaly G. Reynoldsii 1. 



Leaves bipinnatisect, glabrous G. leptophylla 2. 



1. G. Reynoldsii, F. v. M. (under Notholaena and Grammitis). Small perennial ; leaves 

 once pinnate, with a wiry black shining scaly rhachis ; pinnae ovate or oblong, entire, 

 thick, opposite, 1-2 cm. long, more or less clothed on both faces with scaly linear- 

 lanceolate toothed hairs, the clothing denser on the under-surface ; the 3 terminal 

 pinnae united into one 3-lobed pinna ; sori on the terminal veins, almost concealed 

 by the hairs, finally confluent and forming a broad marginal line. 



Parachilna Gorge (Flinders Range) ; Mount Ilbillie (Everard Range) ; near Mount 

 Watson and Birksgate Range ; usually among granite boulders. 



2. G. leptophylla (L.), Desv. Delicate little glabrous annual or biennial; leaves 

 bipinnatisect, the outer ones shorter with a few fan-shaped pinnae, the ultimate segments 

 obovate-cuneate, more or less deeply lobed ; the sori finally almost covering the under- 

 surface of each lobe. — Grammatis leptophylla, Swartz : Anogramme leptophylla, Link. 



Mount Lofty and Flinders Ranges. Widely spread throughout the world. 



13. PLEUROSORUS, Fee. 



(Greek pleura, side ; sbros, a heap : alluding to the 

 position of the sori along the sides of the veins.) 



1. P. rutifolius (R. Br.), Fee. Small perennial fern, 

 more or less beset with long scaly hairs or shorter glan- 

 dular hairs ; leaves simply pinnate ; pinnae fan-shaped 

 or obliquely obovate ; veins radiating from the base 

 of the pinna, repeatedly forked; sori linear, attached 

 to the side of the veins and often covering the 

 whole undersurface ; no indusium. — Grammitis ruti- 

 folia, R. Br. 



Hilly country in most parts of the State. 



Fig. 13. — Pleurosorus rutifolius. 



Family 3— GLEICHENIACEAE. 



Spore -cases few (2-8) in the sorus, surrounded by an obscure transverse ring and opening 

 by a longitudinal slit, without an indusium ; sori seated on the forked veins. 



1. GLEICHENIA, Sm. 



(After F. W. Gleichen, a German botanist, 

 1717-1783.) 



1. G. cireinata, Swartz. Coral Fern; Bird's Nest 

 Fern. Leaves either short and bipinnate, or long 

 and dichotomously branched so as to be 3-4-pin- 

 nate ; pinnae linear-lanceolate, 2-5 cm. long, 

 spreading, cut to the midrib into numerous small 

 alternate contiguous pinnules or segments, flat, 

 ovate, and about 2 mm. broad in the short barren 

 leaves, almost orbicular, 1-1^ mm. broad, of thicker 

 texture and recurved on the margins in the fertile 

 leaves ; rhachis hairy ; sori solitary near the upper 

 basal angle of each segment, consisting of 2-4 spore- 

 cases, and almost concealed by the margin. 



Mount Lofty Range ; South-East. 



spy 



Fig 1 4 — Gleichenia cireinata. 



