﻿55. ASPLENIUM. § 3. EU-ASPLENIUM. 453 



\atr. densuin: Smaller and narrower. 



In the temperate zones and the cool alpine regions of the tropics. 



(236) A. ex.iguuiii, Sedd., Ferns S.I., 49, tab. CXLVI. 



Rhizome short, erect, clothed above with numerous subulate, black scales. 

 Stipes numerous, 7 — 30 c.M. long, blackish-purple, more or less furnished with 

 long, black, subulate scales. Fronds 4—15 c.M. long, 6—20 m.M. broad, the 

 rachis sulcate above, slightly flexuose, more or less extended at the apex into 

 a naked tail and often bearing a young plant. Pinnae numerous, subsessile 

 from a broad base, in the smaller fronds suborbicular and simply crenate, in 

 the larger ones lanceolate-oblong and pinnatifid, cuneato-excised below, the 

 superior and inferior basal auricles 5 — 4-dentate or crenate, the other lobes 

 2-dentate or entire; superior pinnae gradually smaller, uppermost ones often 

 very minute but fertile (with 1 — 2 sori); inferior pinnae gradually smaller, 

 subrotund or flabelliform, always fertile. Texture membranaceous ; surfaces 

 minutely hairy when young, at length naked; veins obscure, the apex thickened. 

 Sori of the larger pinnae arranged in a double row, 1 row of 4 — 5 on each 

 side of the costa and approximate to it, superior auricle bearing 1 ± diverging 

 sorus, rarely 2, sometimes none, lower auricle generally barren, rarely bearing 

 1 — 2 sori. 



Luzon; Centr. China, South. India. 



* (24) A. normale, non., Hk. Bk., Syn. Fil., 197; A. multijugum, 

 Wall., Hk., Spec. Fil., Ill, tab. CLXXXVIII; Bedd., Ferns S.I., tab. CXXXIII. 



Stipes tufted, 10—15 c.M. long, blackish, polished. Fronds 20—30 c.M. 

 long, 272 — 4 c.M. broad, pinnate. Pinnae in 12— 00 pairs, to 2 c.M. long, 

 the lower ones to ^s ^•^- broad, deflexed, the apex obtuse, the upper and 

 outer edge inciso-crenate, the upper base truncate and + auricled, the lower 

 narrowly cuneate, cut away in a + horizontal line which extends nearly 

 the length of the lower margin of the pinna. Texture rather tirm-membra- 

 naceous to subcoriaceous ; rachis glossy, nearly black; vejns simple or forked. 

 Sori oblong or linear-oblong, in 2 unequal, opposite, parallel rows. — A Phi- 

 lippine form has the stipes 2 — 6 c.M. long and the fronds 10 — 25 c.M. long, 

 1—2 c.M. broad. 



Malacca, Sumatra, Celebes, Philippines; China, North. India, Hawaii. 



(25) A., siibaveiiium, MU., Hk. Bk., Syn. Fil., 198; Hk., Spec. 

 Fil., m, tab. CLXXXI, B; Bedd., Ferns Br.L, H, tab. CCLXXXVHI. 



