GLEICHENIA. 7 



li). G. crt/ptocarpa, Hook.; glabrous, fronds dicholomous 

 proliferous subflabcUiforni, branches broadly lanceolate acu- 

 niinato ascending or subincurvcd and falcate rigid pinnatifid, 

 segments linear acute patent the margins recurved concealing 

 the sori and almost meeting on the costa, capsules 1 — 4. (Tab. 



VI. A.) 



Hab. Plains near I.os Andes, Province of Valdivia (n. 802) and Cliiloc 

 (w. 20), Bndgcs. Falkland Islands, Lieut. Robinson. — The affinity of this 

 is with G. pt'dalis, but the habit and the direction of tlic branches of the 

 frond are diflercnt, and the revidution of the margin of the fertile segments 

 is such as to conceal the fructilication almost as in L'ryptoijramma. Brid- 

 ges says it is from 1 to 3 leet high. 



20. G. acntifolia. Hook.; stipes glabrous, fronds about 

 twice dichotomous subilabelliform, branches broadly lanceo- 

 late acuminate somewhat falcate pinnatifid, segments linear 

 acute somewhat hairy beneath clothed on the costa and mid- 

 rib with ferruginous arislate scales, the margin recurved, ca])- 

 sulcs 2—4. (tab. YIII. A.) 



Hab. Port Antonio and Port Famine, Patagonia, Capt. King^s Voyage. — 

 This is a small species, scarcely a foot high. In each of my specimens from 

 two localities the frond is only twice dichotomous, the branches or pedun- 

 cles which bear the forks or pinna; are short, and leafy chiefly on one side. 

 The colour in the dry state is dingy brown, below ferruginous from the 

 rusty scales on the rachis and costa. 



Obs. The six preceding species might almost form a distinct group, having 

 apparently an upright stipes terminated by more or less flabclliform fronds; 

 and they do not seem to possess tlie straggling character of the remainder 

 of the section. 



21. G. revoliita, H. B. K.; stipes and rachis especially be- 

 neath clothed with ferruginous ciliated chafiy scales, fronds 

 repeatedly dichotomous proliferous rigid coriaceous, branches 

 linear acuminate pinnatifid, segments ovate horizontal obtuse 

 glaucous beneath, the margins revolule, capsules 2 — 4. (Tab. 



VII. A.) — Humh. et KNuth, A'or. Gen. Am. v. i. p, 29. Mer- 

 tensia angusta, Klotzsdi, in Herb, nostr. 



Hab. Andes of Quito. Cold and elevated situations at Saraguru of Pa- 

 raraa and Pulia, between 9 — 10,000 feet above the level of the sea, Hum- 

 boldt, Jameson («. 40). — Stipes clothed with pale (bleached ?) fimbriated 

 scales. Under side of the fronds with ferruginous-brown ciliated scales, 

 which, in the perfect specimens, conceal the fructilication, and, almost en- 

 tirely, the glaucous underside of the frond. 



22. G. .simple.}-, Hook.; sti])es naked, frond simple linear 

 rarely forked at the top acuminated and caudate at the point 

 deeply pinnatifid pinnate at the base, rachis densely clothed 

 beneath with ])ale ferruginous large findiriated scales, seg- 

 ments and pinnules oblicjuely patent linear-oblong broader at 

 the base obtuse entire very glaucous beneath, ca])sides 2 — 4. 



