866 



THE BOOK OF CHOICE FERNS. 



what leathery texture, are rounded at the point, slightly undulated, and 

 auricled (eared) at the base on the upper side. The transversely-oblong sori 

 (spore masses) are not quite margmal. — Hooker^ Syno-psis Filicum, p. 112. 



L. quadrangularis— quad-ran-gul-a'-ris (four-angled). This is identical 

 with L. trapeziformis. 



L. recurYata — rec-ur-va'-ta (recurved). Synonymous with L. lohata. 



L. (Isoloma) reniformis — Is-ol-o'-ma ; re-nif-or'-mis (kidney-shaped), 

 Dryander. 



Although extremely rare in cultivation, this species, native of Guiana and 

 the Amazon Valley, is so thoroughly distinct that, provided a sufiicient supplj' 

 could be secured to satisfy all demands, it would no doubt soon be found in 

 all good collections. Unfortunately, it is one of the most delicate species in 

 travelling, and only after many fruitless attempts has it been imported alive 



at Kew Gardens, where it is growing 

 luxuriantly. In general appearance it is 

 very near Adiantam reniforme ; its fronds, 

 however, do not rise from a compact, tufted 

 crown, but from an underground rhizome 

 (prostrate stem), and in that respect they 

 resemble those of the ISlew Zealand Tri- 

 chomanes reniforme, less the transparent 

 character peculiar to that species. The 

 fronds of L. reniformis, borne on slender, 

 black, polished stalks 4in. to Gin. long 

 and of a wiry nature, are Sin. to 2 Jin. 

 across, varying in form from roundish 

 to kidney- shape, with a deep depression 

 (sinus) at their base (Fig. 92) ; they are of a somewhat leathery texture and 

 not pellucid. The sori (spore masses) are disposed in a continuous Ime all 

 round the edge except m the sinus. — Hooker, Species Filicum, i., p. 203. 

 Nicholson, Dictionary of Gardening, ii., p. 281. 



L. (Isoloma) retusa — Is-ol-o'-ma ; ret-u'-sa (blunted). Synonymous with 

 DavaUia retusa. 



Fig, 92, Lindsaya reniformis 



Q nat. size). 



