\i. !i BRBAR] r.M. 



- rather \\ iili tbe ■ 

 in w bleb it d >1 only i- forn 



ghter rhizome and more translucenl 



a ii plant with numerous flaccid linear fronds; rbl 



ler, l to 1.5 nun. in «iia ter, bearing a f<\\ relatively 



dark cell walls; fronds IS to 20 cm. long, 

 ;. to - stipitate, great Ij reduced below, the rachis til it 



1 . 15 i" 60 pairs of distant narrow alternate 



t<>w;ini the apes or sometimes abruptly to a 



erminal cauda it 2 cm. long, i' mm. broad at tbe base and 



abed; plume separated once or twice their width, adnate, 



is. translucent, tbe lowermost minute, decurrent, distanl 



i. from the rhizome, those Immediately above gradually larger 



»U> Qiid veins; characteristic pinna? G mm. long, 1.75 nun. broad 



■ the base, strongly decurrent, lanceolate, straight or slightly rect 



sually at an angle of about 15 |, margins with a few shallow 



apex somewhat produced, subentire, obtuse, mldveins dark. 



with about i or 5 pairs of oblique alternate veins extending half 



way to the margin and corresponding to tin- oblique marginal teeth; sori large, 



slightly Impressed, confluent with age, terminal upon the veins. 



the herbarium of Capt .John Donnell Smith: collected from tree 

 trunks i oban, Alta Verapaz, Guatemala, at an altitude of 1,300 meters, 



ary, L886, by II. von Tiirckheim. The collection Including this was <lis- 

 tributed by Captain Smith as no. s M. Poly podium jubaefonm Kanlf. A 

 ii. mi of this number in the l . S. National Herbarium is less compli 

 The present species is readily distinguished from p. jubacfornn by Its exceed- 

 delicate texture, very slender vascular parts, almost superficial sori. and 

 toothed pinna', the lasi a character noted by Captain Smith. The relation- 

 ship is rather with the British Guianan /'. melanotrichum Baker and the 

 S allied /'. suprasculptum Christ, 6 the latter described recently from 

 i; . . Prom these it differs notably in its rery narrow fronds and few 

 eth. 

 Stenochlaena latiuscula Maxon, sp. nov. 



Uootstock wide-creeping, flattened, about 7 mm. broad, .". to I mm. thick. 



naked or nearly so, bearing a few naked dark yellowish brown lanceolate 



f the si pe ami extending up the stipe a short distance (3 



in. i. Sterile frond dark green, about T<> cm. long; stipe l ,(| cm.; lamina 



ly lanceolate, at the base truncate, 50 cm. long, 25 cm. broad at the middle 



se, aboul L7-jugate, the pinna' 12.5 cm. long by 1.6 to 1.8 cm. 



broad, simple, linear-lanceolate, subopposite, spaced aboul their width, borne at 



.i terete very narrowly alate rachis, short-petiolate, Bubequally 



and rather obtusely cuneate, tapering gradually from near the middle to an 



straight or slightly falcate apex, the margins evenly 



crein ite in drying; veins conspicuous, simple or more commonly 



i at or near the base, diverging from the costs at an angle of about 



— about s to 1 cm. Fertile fronds similar but smaller. 



about 13-jugate, th<- rachis fibril lose-chaffy; pinna- linear, 10 to ll cm. long. 



"Tlmehri II. 5: 216. 1886; Trans. Linn. Soc. II. Bot 2: 292, 1887. 



i: I. II- rh. Bolss. II. 5: 3. UK)5. 



