﻿164 18. CYCLOPELTIS. 



* (2) C Preisliana, Berk., C. Chr., Ind. FiL; Aspidium Pre 4ianum 

 Melt., Farng., IV, Phegop. & Aspid., 56; Polystichum Preslianum, Moore, GoT^ei., 

 Polypod. Philipp., 16; — var. biauriculata. 



Like C. semicordata, /. Sm., but : Stipes clothed with long, spreading 

 scales, which are brown and subulate. Pinnae numerous, distant or approxi- 

 mate, spreading, the edge entire, crenato-sinuate or subrepand, highest 

 pinnae often confluent with the terminal one, the upper base subcordate or 

 rounded to slightly auricled, the lower base conspicuously auricled with an 

 oblong, rounded, hamato-recurvate lobe which is adpressed on the rachis. 



War. biauriculata: Upper base with a conspicuous, deltoid, + 

 deflexed auricle, which has the apex obliquely truncate. 



Malaya; Burmah, Tonkin; — var. biauriculata: New Guinea (Peekel). 



lo. polystichum:, koh*. 



Sori roundish, dorsal or terminal on the veins. Indusium normally round 

 and peltate, exceptionally reniform and attached by the sinus. 



Rhizome creeping or erect. Stipes not articulate lo the rhizome. Fronds 

 at least pinnate, usually tough or rigid, the leaflets mostly unequal-sided, i. e. 

 the lower side less developed, or the upper base broadly cuneate to truncate 

 and often auricled, the lower one obliquely cut away; the edges commonly 

 mucronate or spinulose ; veins free. Hk. Bk., Syn. Fil., tab. V, fig. 43, a — b ; 

 Diels, in Engl, k Prantl, Nat. Pfl.Fam., P, fig. 99. 



Tropical and extra-tropical. 



a. 



Fronds simply pinnate, at best 2-pinnatifid at the base. (1) P. auricula tum. 

 a.a. Fronds at least 2-pinnate at the base. 



b. Main rachis densely scaly or fibrillose. 



c. Texture membranaceous or herbaceous. (2) P. diaphanum. 



c.c» Texture rather coriaceous. 



d. Pinnulae distinct, short-stalked, not joined at the base. 

 e. Scales of stipe and rachis ferrugineous. 



f. Teeth aristate or spinulose. (3) P. aculeatum. 



f.f. Teeth blunt or adpresso-mucronale. (4) P. obtusum. 

 €.e. Principal scales of stipe and rachis ± black. 



(5) P. biaristatum. 



