M\\m\ STUDIES OF rBOPIl \l. AMERICAN FERNS. 1^1 



Asplenium kapplerianum Knii/.e, Linna?a 21: 216. 1848. 



The writer has seen do materia] to be referred to ihis species; yel It - 

 desirable t<> call attention to its status In order thai 11 may be definitely ■ 

 by those who bave access to the original material. 



\sjih n't ii in kapplerianum was founded by Kunz i specimens collected Dear 



Para by Kappler (no. L769). The author refers here also specimens from two 

 addil Lona ! sources, as follow - : 



I. Surinam plants collected by Splitgerber and described by thai writer 

 under the Linnaean name Asplenium salicifolium, Kunze regards Splitger- 

 ber's description as excellenl for his own kapplerianum and compares the Suri- 

 nam plants with whal he considers the true salicifolium as previously elaborated 

 by him ^ on the basis of Peruvian plants collected by Poeppig (probably the 

 same form figured by Mettenius as typical of salicifolium). Bui bere Kunze 

 falls into thf error of selecting for his "salicifolium" as already pointed out, 

 an obscure plant from Peru; whereas the true salicifolium is a Wesl Indian 

 plant, collected in several localities by Plumier, and, as has been shown, well 

 known from the West indies under ilu- name A. auriculatum. 



II. Guiana plants, listed by John Smith < .-is .1. integerrimum, which are uol 

 ill.- inh [it rrimum of Sprengel. 



Asplenium integerrimum and A. kapplerianum were merged by Moore d who 

 cites many specimens. From description .1 kapplerianum certainly appears t" 

 be distinct from .1. integerrimum and rather closely related to A. salicifolium. 

 Splitgerber's var. /3 is referred by Kunze e to Asplenium falx Desv.f which is 

 probably a true synonym of salicifolium. 



In conclusion it may be said that the plant figured by Mettenius as 

 .1. salicifolium i- probably still without a name, unless it is found to 

 be Identical with A. rectangulart here described. 



A NEW GENUS OF ASPLENIOID FERNS. 



Holodictyum Maxon, gen. no Plate LVI, Fioube J. 



Fronds numerous, densely cespitOSe upon an erect rhizome, simple, linear- 

 lanceolate, chartaceo-membranaceous, costate; venation wholly areolate, the 

 areoles in about ~> or »; series on either side of the costa, free included veinlets 

 none; costal areoles elongate, cuneate, nearly parallel to the costa. the others 

 oblique, broader, oblong, mostly hexagonal, gradually much smaller toward 

 the hyaline margin; sori elongate, diverging at a slighl angle from the 

 confined to the outer vein of the costal areoles. one to each areole; indusium 

 single, straight or nearly so. firm, persistent, attached along on,, side. 



Type. Asplenium ghiesbreghtii Fourn. 



Holodictyum differs from Asplenium and Diplazium in its pronounced hex- 

 agonal areolation, this accompanied by a complete suppression of lateral 



ids. Nat. Gesch. 7: U8, U9. L840. 

 '■ Linnsea 9: 64. 1834. 

 London Journ. Bot. 1: 199. 1842. 



'' Ind. 1'il. 138. L859. 

 • Linnaea 21: 216. L848. 



f .Mem. Soc. I. inn. Paris 6: 274. is-jt. See Mettenius' description (Abhaud. 

 Senck. Nat. Gesell. 3: 145 I860) with reference to Fee's figure. 



The name is from Creek 6V.<r. whole, and Mktvov, a net. referring to the com- 

 plete anastomosis of the veins. 



