42 TRICHOMANES RADICANS. 



Trichomanes radicans, var. Andreicsii, Mooee. Newman. 



" speciosum, var. Andreicsii, Newman. 



" brevisetum, var. Andreicsii, Henfeey. 



Hymenopliyllum alatum, J. E. Smith. TVilldenow. 



(Not of Schkuhb.) 



" rupestre, Baddi. 



" Tunbridgense, var., J. E. Smith. Withering. Hull. 



Didymoglossum alatum, Desvaux. 



Filix-humilis repens, Dillenius. 



Trichomanes — From the Greek — Soft hair. Radicans — Rooting. 



A most beautiful, half-hardy, indigenous species. 



Native of Ireland, growing in the counties of Cork, Kerry, 

 Waterford, Wicklow, etc.; and formerly at Bellbank, (twelve 

 miles from Bingley,) Yorkshire. The variety Andrewsii at 

 Iveragh, Ireland. 



Also found in Jamaica, Martinique, Brazil, Mexico, Vera 

 Cruz, Xalapa, Tabasco, Esmeralda, Sandwich Isles, Owhyhee, 

 Oahu, Nepal, Teneriffe, Madeira, Azores, Canaries, Sikkim, 

 Bootan, Mergui, Alabama, Panama, New Grenada, Venezuela, 

 Galapagos, Society Isles, and Equador. 



Fronds glabrous, triangularly elongate, apex more or less 

 attenuated; tri-quadripinnatifid, segments entire, linear in form, 

 or bluntly bifid. Pelucido-membranaceous. 



Rachis winged, and decurrent on the stipes. 



Stipes copiously covered with dark hair-like scales. 



Sori solitary, and situated in the axils of the upper segments; 

 extra marginal. 



Indusium cylindrical. 



Veins branched from the main rachis; in the fertile segment 

 the vein is continued beyond the margin, and forms the recep- 

 tacle, whilst in the barren segment it does not reach the 

 margin. 



Length of frond from six to twenty inches; colour olive 

 green. 



Rhizoma perennial and creeping; elongated, tomentose with 

 small dark-coloured hairs. 



The stipes is from a fourth to half the length of the entire 

 frond. 



This species is known as the Bristle Fern. 



