12 2. GLEICnZXIA, § MERTE>.SIA. 



4. G. (Eugl.) rupestris, Br. ; glaTn'ous, loTjes of the pinnce rounded or obtusely 

 KuLquadrangular, coriaceous, the margins thickened and recurved, suhglaucous 

 beneath ; sort of 3-4 capis., superficial. — Hk. Sp, 1. p. 2. t. 1. B. 



Hab. Port Jackson and N. W. Auotral., MuelUr, — Too near, I fear, to G. circmata. 



5. G. (Eugl.) Boryi, I^e.; small; fr. suhelHptical, 4 in. 1. by 3 in. br., 

 bipinnate \ jjrim. jnnii'x ^. subopposite, ultimate pair constituting a fork ; terminal 

 pinnl. elongate ; lohes of the ultimate piniKs very small, \ in. 1., suborbicular- 

 concave, glaucous beneath ; sori of few caps., mixed with copious ferruginous 

 wool. — Kze. in Schk, t, 70./! 1. 



Hab. Bourbon, £orr/. 



6. G. (Eugl.) dicarpa, Br. ; lobes of the pinnce round, subhemispherical, very 

 fornicate ; caps, about 2, concealed within the almost slipper-shaped lobes, and 

 mixed with ferruginous paleaceous hairs, which often extend to the rachis. — Hk. 

 Sp. 1. p. 3. t.\.C and F. Ex. t. 40. — /3, aljnna ; generally smaller and more 

 compnct, r«c7<2s and young shoots ferruginous, v.-ith paleaceous wool. G. alpina, 

 Br. Hk. et Gr. F. t. .58 ; Hook. Sp. I. p. 2. G. hecistophylla, A. Cunn. Hk. 

 Sp.l.p. 4. t. 2. B. G. vulcanica, Bl. Hk. Sp. l.p. 4. 



Hab. Australia and Tasmania, frequent. Isle of Pines, DenJiam. N. Cal. Vieillard. 

 — /3 High mountains, Tasmania, N, Zealand, Malay Isles (G. vulcanica, BL). 



§§ Mertensia. Sori near the middle of, or at the forking of, the veinlets, the ulti- 

 mate pinnce pectinate ; se/jm. linear or ohlong, rarely suhovate, much longer than in the 

 j/receding section. St. forked, or, from the development of an axillary bud, prolife- 

 rous and pinnated ; jnnnce very long and pAnnated ; pinnl. deeply pnnnatifid. Sp. 

 7-21. Mecosorus, Hassk. 



* Stipes forked, branched, and copiomly bipinnate. Sp. 7. 



7. G. (Mert.) longissima, Bl. ; Jarge, often many ft. long ; st. stout, forked ; 

 branches very long, bearing numerous close-placed pinnce 4-0-8 in. 1., 1-2 in. br., 

 deeply pinnatifid to the rachis ; the scgm. linear, acuminated, or oblong, paler or 

 more or less glaucous beneath, glabrous, or (especially when found at great eleva- 

 tions) densely ferrugineo-tomentose, and very paleaceous on the st. rachis and 

 youn^ shoots ; caps. .3-5, often mixed with hairs. — Hk. Sp. 1. p. 4. G. glauca, 

 Hk. Sp. 1. p>. 4. t. 3. B., not Sw. M. glaltra, Brack. G. gigantea, Wall, in Hk. 

 Sp. 1. p. ij. t. 3. A. G. excelsa, tT. Sin. Hk. Sp). ].p.5. t. 4. B. G. Bancroftii, Hk. 

 Sp.l.pj. 5. t. 4. A. M. pinnata, Kze. — fi,arachnoidcs, frond cobwebby. G. arach- 

 noides, Mett. in Ann. Bot. L. Bat. 1. p. 47. G. buUata, Moore. 



Hab. China and Japan, common, and mosdy very glaucous beneath ; Bengal, Malay 

 Islands and Peninsula, Sandwich Isles, W. Indies, N. Grenada, Mexico, and Guatemala. 

 — 13, Borneo, elev. 7,000 ft., Low. .Java, Blame, De Vriese. — My copioos specimens from 

 the above localities quite satisfy me that the supposed species enumerated are trifling 

 modifications of one and the same ; glauca, is the oldest specific name. 



** Fr. dichotomous {rarely simple) ; pinnatifid; in other words, the leafy or 

 frondose portion is not confined to the forked apices, but is decurrent upon tlte 

 branched poHion oftJie st, Sp. 8-21. 



8. G. {'Mari.) flahellata, Br.; fr. very. proliferous ; branches dichotomously 

 flabelliform, submembranaceous ; pinnm ascending, a span and more 1., 1-2 in. 

 br., lanceolate, subcaudato-acuminate, closely pectinato-pinnatifid ; scgm. linear, 

 suberecto-patent.— //^. Sp. l.p. 0. Hk. F. Ex. t. 71. 



Hab. N. to S. Australia and Tasmania ; N. Zealand ; N. Cal., Vieillard. 



9. G. (Mert.) tenera, Br. ; "//'. dichotomous, proliferous; branches lanceolate 

 pinnatifid ; pinnae {segm.) linear, entire, divaricated, slightly hairy ; rachis scaXy^ 

 caps. 3-5, inserted, sessile," Br.— Hk. Sp. 1. p. 6. 



Hab. Tasmania. — What I suppose to be tliis, is probaVjly a small and young form of G.jla- 

 bellaia with shorter and more spreading negm., and ia slightly and partially villous and scaly. 



