12 2. GLEICHENIA, MERTENSIA. 



4. G. (Eugl.) rupestris, Br. ; glabrous, lobes of the pinnce rounded or obtusely 

 subquadrangular, coriaceous, the margins thickened and recurved, subglaucous 

 beneath ; sori of 3-4 caps., superficial. Hk. Sp. 1. p. 2. t. 1. B. 



Hab. Port Jackson and N. W. Austral., Mueller. Too near, I fear, to Q. circinata. 



5. G. (Eugl.) Boryi, Kze.; small; fr. subelliptical, 4 in. 1. by 3 in. br., 

 bipinnate ; prim, pinnce 4, subopposite, ultimate pair constituting a fork ; terminal 

 pinnl. elongate ; lobes of the ultimate pinnce very small, j in. 1., suborbicular- 

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

 wool. Kze. in Schk. t. 70./. 1. 



Hab. Bourbon, Bory. 



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.l. p. S.t.l. C. and F. Ex. t. 40. j3, alpina ; generally smaller and more 

 compact, rachis and young shoots ferruginous, with paleaceous wool. G. alpina, 

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

 Sp. 1. p. 4. t. 2. B. G. vulcanica, El. Hk. Sp. 1. p. 4. 



Hab. Australia and Tasmania, frequent. Isle of Pines, DenTiam. N. CaJ. Vieillard. 

 /3 High mountains, Tasmania, N. Zealand, Malay Isles (0. vulcanica, Bl.). 



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

 mate pinnce pectinate ; sec/m. linear or oblong, rarely subovate, much longer than in the 

 preceding section. St. forked, or, from the development of an axillary bud, prolife- 

 rous and pinnated ; pinnce very long and pinnated ; pinnl. deeply pinnatifid. Sp. 

 7-21. Mecosorus, Hassk. 



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



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

 branches very long, bearing numerous close-placed pinnce 4-6-8 in. 1., 1-2 in. br., 

 deeply pinnatifid to the rachis ; the segm. 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 

 young 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. glabra, Brack. G. gigantea, Wall, in Hk. 

 Sp. I. p. 5. t. 3. A. G. excelsa, J. Sin. Hk. Sp. I. p. 5. t. 4. B. G. Bancroftii, Hk. 

 Sp. 1. p. 5. t. 4. A. M. pinnata, Kze. P,araclmoidcs, frond cobwebby. G. arach- 

 noides, Melt, in Ann. Bot. L. Bat. I. p. 47. G. bullata, Moore. 



Hab. China and Japan, common, and mostly 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, Blume, De Vriese. My copious 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 dccurrent upon tlte 

 branched portion of the st. Sp. 8-21. 



8. G. (Mert.) flabellata, Br. ; fr. very proliferous; branches dichotomously 

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

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

 suberecto-patent. Hk. Sp. l.p.G. Ilk. F. Ex. t. 71. 



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



9. G. (Mert.) tencra, Br. ; "fr. dichotomous, proliferous ; branches lanceolate 

 _ innatifid ; pinnce (segm.) " 



caps. 3-5, inserted, sessile, 



pinnatifid ; pinnce (segm.) linear, entire, divaricated, slightly hairy ; rachis scaly. 

 ' ^\z," Br.-Hk.Sp. l.p.G. 



Hab. Tasmania. What I suppose to be this, is probably a small and young form of G.fla- 

 bcllaia with shorter and more spreading segm., and is slightly and partially villous and scaly. 



