﻿574 45. PTERIS. § 3. LITOBROCHIA. 



with the upper base free and truncate or joined with the next higher pinnae, 

 the higher pinnae joined at the base by a wing ^/^ — 1% cM. broad. 

 Lower and central pinnae to 25 c.M. long, to 3 c.M. broad, the fertile ones 

 narrower than the barren, entire, linear, or slightly dilated towards the acu- 

 minate apex, the higher ones rather suddenly abbreviated, ± '/s X shorter, 

 the terminal one nearly as long as or longer than the highest ones. Texture 

 membranaceous, pellucid ; colour grey-green ; surfaces naked ; rachis and costae 

 dark-purple beneath, yellowish above ; costulae and veins distinct ; areolae 

 roundish- or elongate-subhexagonal. Sori continuous along the sides, inter- 

 rupted, at the base and apex of the segments; indusium dark-purple, rigidly 

 membranaceous. 

 New Guinea. 



(41) ? I»t. uiicrodictyoai, nie. (not Fee), Spec. Fil., II, 228; 

 Litobrochia microdicfyon. Fee, Gen., 138. 



Stipes reddish. Fronds tall, ovate; rachis sublrigonous, channelled. 

 Pinnae short-stalked, alternate, acuminate, pinnatifid. Segments lanceolate, 

 falcate, slightly dilated at the base, obtuse, crenate. Indusium narrow, in- 

 conspicuous, receptaculiform ; the margin thick and black. 



Philippines. 



* (42) I»t. .lunghuhiiii, Iffe., Hk. Bk., Syn. Fil., 170; P/ iriparlila, 

 Sw., var. Jimiliuhn'i, Hk., Spec. Fil., \I,'^W;CampleriaJuiighuhnit,ReiHW.,MS. 



Stipes firm, erect, polished, nearly stramineous. Fronds to 60 c.M. long, 

 with several or numerous pinnae on each side, which are cut down ^/^ — ^/^ 

 of the way to the costa into linear-oblong, falcate, entire lobes + '/a '^•'^^• 

 broad at the base ; lowest pinnae simple (i. e. not forked at tlie base), 

 to 25 c.M. long. Texture herbaceous to subcoriaceous ; rachis and both sur- 

 faces naked ; veins fine, anastomosing principally in costal arches (as in Campteria) 

 and in the space between the sinuses and the costae, sometimes also in the 

 lobes. Sori reaching nearly to the apex of the lobes. — Habit of Pt. quadri- 

 aurita, Retz & biaurita, L. 



Java, Banca. 



(45) Pt. lliloeaua, JBh., Hk. Bk., Syn. Fil, 170; IH. Iriparlila, Sw., 

 var. Milneana, Hk., Spec. Fil., II, 226, tab. CXXXVIII, B. 



Stipes strong, erect, polished, yellowish-brown. Fronds 60— 90 c.M. long, 

 with numerous pinnae on each side cut down throughout nearly to the costa 



