228 



THE BOOK OF CHOICE FERNS. 



very variable in the more or less decurrent lobes of the frond, and in the 



presence or absence of tomentum and scales. It is also known as G. furcata, 



G. Mathewsii, and G. tomentosa. — Hooker, Species Filicum, 1, p. 8. Nicholson, 



Dictionary of Gardening, ii., p. 73. Lowe, New and Rare Ferns, t. 60. 



G. p. longipinnata — long-ip-in-na'-ta (having long pinnte or leaflets), 

 Hooher. 



This variety only differs from the species in having its pinnaj (leaflets) 

 2ft. long and Sin. broad. — Hooker, Species Filicum, i., p. 9 ; Synojms 

 Filicum, p. 14. 



G. (Mertensia) quadripartita— Mer-ten'-si-a ; quad-rip-ar-ti'-ta (divided 

 in four parts), Hooker, 

 A gi-eenhouse species, of small dimensions, native of the Straits of Magellan 

 and Port Famine, and also known as G. acutifolia. Its fronds, only once 

 forked and with each branch simply forked again, are of a leathery texture, 

 very dark green above, and red-brown beneath ; they are furnished with spear- 

 shaped, somewhat comb-like leaflets 4in. to 6in. long, lin. to IJin. broad, 

 the lobes of which are narrowly sickle- shaped, sharply pointed, and show 

 their margins a little recurved. The sori (spore masses) are disposed from 

 one to tlu-ee together near the midvein. — Hooker, Species Filicum, i., p. 7, 

 t. 8a. Nicholson, Dictionary of Gardening, ii., p. 73. 



G. (Mertensia) revoluta — Mer-ten'-si-a ; rev-ol-u'-ta (turned back), 

 Humboldt, Bonp)land, and Kunth. 

 This greenhouse species, of distinct appearance, is a native of the summit 

 of the Blue Mountains, Jamaica, and also of the Andes of Quito, where it is 

 found at 9000ft. to 10,000ft. elevation. Its rigid fronds, borne on stalks of 

 a scaly nature, are repeatedly forked into two, rarely proliferous, and furnished 

 with narrow-pointed leaflets Sin. to 7in. long and about fin. broad, the lobes 

 of which are egg-shaped, horizontal, blunt, with the margm recurved, and 

 glaucous (bluish-green) beneath. The sori (spore masses) consist of capsules 

 disposed from two to four together on each side of the midvein. — Hooker, 

 Species Filicum, i., p. 7, t. 7a. 



G. rufinervis — ru-fin-er'-vis (red-nerved). A synonym of G. dichotoma. 



