16^ 



OPHIOGLOSSUM. 



GENUS I. 



OPHIOGLOSSUM. Linn^us. 



A SMALL family of herbaceous Ferns, having the sterile and 

 fertile branches distinct, yet on the same stem. 



Veins reticulated. 



The name derived from the Greek, ophios — a serpent, and 

 glossa — a tongue; hence the name Adder's-tongue. 



There are two British species, — Ophioglossum vulgatum and 

 O. Licsitanicum. 



Kunze, in his "Index Filicum," enumerates — 



O. bulbosum, Michaux, North 

 America. 



— gramineum, IVilldenoio, New 

 Holland. 



— palmatum, LinyicBUS, Amer- 

 ican Meridian. 



— reticulatum, Linnceus, Amer- 

 ican Meridian. 



O. costatum, Broivn, New Hol- 

 land. 



— Lusitanicum, LinncBus, Eu- 

 rope. 



— pedunculosum, Desvaux, 

 Java. 



— vulgatum, X^?^;^<^^^5, Europe. 



Sprengel, in his "Systema Vegetabilium," gives — 



0. vulgatum, Linnceus. 



— ovatum., Swa7^tz, Molucca. 



— petiolatum. Hooker, India. 

 — • reticulatum, Linnceus. 



— bulbosum, Michaux. 



— Cc(pense,SchlecIite?idal,Mnca.. 



— Lusitanicum, Linnceus. 



— gramineum, Willdenon:. 



O. costatum, Brown. 



— Bergianum, Schlechtendal. 



— pendulum, i2???z^W5,Molucca. 



— palmatum, Linnceus. 

 Helminthostachys dulcis, Kcml- 



fuss, India. 

 H. Mexicana, Sprengel, Mexico. 



