87 



333 



nervis faciebus margineque pilis albidis rigidis acutis (nec glanduligeris) patentibus 

 dense veslitis et ciliatis. — Textura herbacea, colore laete sed dilute viridi, opaco. 



Habitu D. parasiticae (L.) a qua differt nervis pluribus baud anastomosantibus, 

 pinnis profundius incisis, segmentis angustioribus subfalcatis niagis numerosis, 

 pubescenlia peculiari. 



Ex epistola cl. inventons planta apud incolas nota ob vim urlicantem pilorum, 

 ita ut faciei humanae incomniodum fiat, si manibus contactu filicis inquinatis 

 tangitur. (H. Christ scripsit.) 



To the above diagnosis I shall add : Lamina subtus glandulis sessilibus aureis 

 minutis sparse instructa. 



The structure of the hairs does not diiîer from the hairs of allied species. — 

 The species is a near ally of D. parasitica and D. patens, having a similar indusium 

 and the lower veins running into the sinus. The base of the lamina judging from 

 the diagnosis is somewhat reduced, or rather the lower pinnæ are somewhat 

 abbreviated, but certainly not to the same extent as in most species of the group 

 of D. opposita. 



Fig. 52. I. D. urens Ros. — II. D. Bangii C. Chr. 

 The three segments show both the venation of Lastrea and of Nepbrodium. 



Dryopteris Bangii n. sp. — [Fig. 52 II]. 



Bolivia: Near Coroica, Yungaz, leg. A. Miguel Bang *h 1894 n. 2321 (HH). 



ürijopteris rhizomate repente, glabro, Stipitibus 2 — 3 cm. distantibus, c. 4 dem. 

 longis, ad I'/s cm. crassis, fusco-stramineis basi nigrescentibus, superne trisulcatis, 

 pubescentibus et ad basin squamis paucis, Iaxis, deciduis instructis. Lamina lan- 

 ceolata, 5'/2 dem. longa, infra medium VI2 — 2 dem. lata, utrinque attenuata, acu- 



