54. ATHYMUM. 4Sii 



Sori oblique, 2—3 m.M. long, ± 1 m.M. broad, ovate-lanceolate, sligbtly 

 curved; indusium greyish, turgid, persistent. 

 Luzon. 



* (4) Ik. maci'ocarpain, Bead., Handb. Ind. Ferns, 16a; Ferns 

 S.T., tab. CLII — CLIII; Asplenium macrocarpum, Bl., Rac, Plor. Btz., I, 225; 

 Aspidium macrocarpon, BL, Enum., 162. i See Supplement 1. 



Rhizome erect or suberect, clothed with lanceolate, brovi^n scales. Stipes 

 + tufted, 12 — 25 c.M. long, firm, erect, stramineous,/ scaly at the base. 

 Fronds ovate-lanceolate, acuminate, 15 — 60 c.M. long, *0^25 c.M. broad, 

 pinnate. Pinnae numerous, the lower ones often deflexed, the longest stalked, 

 1 — 4 c.M. broad, cut down into several oblong, bluntish, erecto-patent, crenate 

 lobes or even pinnate at the base, the base + auricled^ on the upper side. 

 Secondary segments sometimes pinnatifid. Texture berb^oeous; rachis naked 

 or glanduloso-pubescent. Sori copious, roundish or oblong, the costal ones 

 horseshoe-sbaped or hamato-reniform. 



Twp. Asia, China, Japan. 



(5) A. acrosticlioides, Biels, in Engl; k Pranll, Nat. Pfl.Fam., 

 V, 223, fig. 120, C; A. thelyplheroides, Desv., Bedd., Handb. Ind. Ferns, 164; 

 A. allantodioides, Bedd., Ferns Br.L, II, tab. CCXXI; Asplenium thelypleroides, 

 Mehx.,^iik. Bk., Syn. Fil:, 226; A. acrosliclmdes, Sw., (oldest name). 



Stipes 15—30 c.M. long, erect, polished, stramineous, furnished at the 

 base with large, lanceolate, thin, liglit-coloured scales. Fronds + 30 — 90 

 c.M. long, 15 — 30 c.M. broad, lanceolate, pinnate. Pinnae numerous, the lower 

 ones gradually reduced, distant, the largest ones spreading or ereclo-patent, 

 2 — 272 C.M. broad at or near the base, narrowed gradually towards the 

 apex, the edge deeply cut down into numerous crenate or nearly entire, 

 oblong, blunt, ± spreading segments. Texture herbaceous; rachis naked or 

 + hairy. Sori in close, regular rows, slightly curved, reaching nearly from 

 the costulae to the edge, the lower single or double. 



Penang; Br. India, China, North. America. 



(6) A. hyalostegiam, Copeh, Philipp. Journ., I, Suppl. 253. 

 Rhizome creeping, often intertwined, sparingly clothed with minute, fer- 



rugiueous scales. Stipes, caespitose, 4 — 8 c.M. long, filiform, stramineous or 

 greenish, the base brownish, the upper part clothed like the rachis with 

 short, whitish, silky hairs. Fronds 3—7 c.M. long, \% — 4 c.M. broad, acu- 



