TAB. XCHi: 

 Davallia (Dakeoide-e) nigrescens, Hook. 



Stipite pedali et ultra subrobusto viridi-fusco squamis subu- 

 latis parvis paleaceo, fronde sesquipedali ad bipedalem late 

 ovata acuminata submenibranacea flaccida glaberrima sicci- 

 tate nigrescente 3-4-pinnata, pinnis primariis secundariis- 

 que ovato-lanceolatis lpnge acuminatis petiolatis ultimis 

 pinnatifidis, laciniis oblongis ovatisve subsecundis acutis 

 integerrimis uninerviis, nervis infra apicem terminantibus, 

 soris ad marginem superiorem pinnularum seu laciniarum 

 insertis prominentibus, involucro calyciformi (hemispherico) 

 firmo frondia colore margine integerrimo, racbibus ubique 

 planiusculis laeviter marginato-alatis. 



Hab. Peak of Fernando Po ; elev. 3000 feet. Gustav. Mann, 

 n, 448. 



It is difficult to say whether this should be referred to 

 Davallia or to Dicksonia. If considered a Davallia, the por- 

 tion of the frond to which the involucre is attached, is so 

 tumid as to represent, on the upper side of the frond, the invo- 

 lucre on the underside, thus exhibiting a perfectly hemisphe- 

 rical cup with an entire margin, but sunk in the frond. In 

 habit and ramification it very much resembles Asplenium 

 (Darea) Shulthworthii of Kunze in Schk. Fil. Suppl. p. 26, 

 t. 14; but there the sorus and involucre are truly dareoid, 

 laterally elongated ; here hemispherical. 



Tab. XCm. Fig. 1. Portion of stipes of Davallia nigres- 

 cens, Hook. ; and f. 2 and 3, apex and primary pinna of a 

 frond ; natural size. f. 4. Ultimate fertile pinna with sorus ; 

 magnified, f. 5. Sorus from which the involucre is removed, 

 showing the long stipitate capsules; more magnified. 



CbjTT. 2. i. 03. 



