7. GLEICHENIA. § 3. MEETENSIA. 83 



(5) C volubilis, Jungh., Reis. Jav., 452; G. buUata, Moore^ Ind. 

 374; C. Clir., Ind. Fil., Suppl.; G. arachnoidea, Mett. 



Like G-. giauca Hk. but the segments more rigidly coriaceous, bullate 

 by the strongly recurved edges, clothed beneath like the rachises and 

 costae with more or less persistent, dense, ferrugineous, woolly tomentum 

 intermixed with deciduous, brown to black-brown squamules with pale 

 ciliated margins. 



(5a) €i. gi^autea, Wall., Hk., Spec. Fil., I, tab. Ill A,; G. giauca, 

 Hk., var., C. Chr., Ind. Fil. 



Near G. giauca Hk. but the segments typically, though not invariably, 

 short and broad, with an elevated base so as to form an interrupted 

 raised line on each side of the costae, on the upper side ; rachises, costae 

 and costulae densely scaly at least below, the scales lanceolate, partly 

 entire, partly erose, partly ciliate, pale-brown or pale-ochraceous, 

 intermixed with woolly tomentum of the same colour. 



(7) G. linearis, Clnrke; G. dichotoma, Hk., Rac, Flor. Btz., I, 13; 

 Bedd. Ferns S. I., tab. LXXIV; G. Hermanni, R. Br., BL, Enum., 248 

 (incl. var. tenera, Bl., 1. c, 249); Mertensia dichotoma, Willd., Schk., Krypt. 

 Gew., I, tab. 148; Polypodium lineare, Burm. (oldest name); — var. 

 malayana, Christ, in Ann. Btz., XV, 77 ; — var. tetraphylla, Rst., in Fed., 

 Rep., Xni, 213; — var. alternans, Mett., in Ann. Mus. Bot. L. B., I, 51, 

 tab. Ill; — var. irregularis, v. A. v. R., ; — var. inaequalis, Rst., 1. c, 212; 

 — var. normalis, Bl., 1. c, 249; — var. rigida, Bl., 1. c, 249; G. rigida, 

 J. Sm., in Journ. of Bot., Ill, 420; G. crassifolia, Copel., in Philipp. 

 Journ., YV^, 25; C. Chr., Ind. Fil., Suppl.; M. crassifolia, Pr., Epim., 

 23, tab. XIII; — var. venosa & var. pubigera, Bl., 1. c, 249; — var_ 

 emarginata, Christ, 1. c. ; — var. ferruginea, Rac, 1. c. ; G. ferruginea, BL, 

 1. c, 249. 



Fronds commonly large and about 3 — 4 times forked, each forking 

 bearing a pair of deflexed, unbranched, stipule-like accessory branches at 

 the base, on the outer side; geminate terminal branches mostly without 

 accessory branches; ultimate (accessory and terminal geminate) branches 

 fohaceous, generally long-elliptical or linear-lanceolate, commonly deeply 

 pinnatipartite with often very numerous more or less horizontally spreading 

 segments on each side. — Exceedingly variable, with forms united by 

 intermediates which often are very difficult of determination. 



