■ff^-* ^ 



1 



MAXOX STUDIES OF TKOPirAL AMERICAN FERNS. 481 



Aspleniuni kapplerianum Kunze, Liniuioa 21: 21G. IS-iS. 



The writer has seen no material to be referred to this species; yet it seems 

 deisirablo to call attention to its status in order that it may be definitely jjlaeed 

 by those who have access to the original material. 



Asploiifon IcappJcrianum was founded by Knnze on specimens collected near 



■ 



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

 additional sources, as follows; 



I. Surinam i>lants collected by Splitgerber and described*^ by that writer 

 under the Linnrean imme A''^plrithnti saJicifoIium, Kunze regar<Is SpHtger- 

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

 nam plants with what he considers tlie true saiicifolium as previously elaborated 

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

 same form figured by ilettenius as typical of salicifoJiinn). But here Kunze 

 falls into the error of selecting for his ''sallvi folium,'' as already pointed out, 

 an obscure plant from Pern; whereas the true mlicifoUum is a West Indian 

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

 known from the West Indies under the name .1. auricuJainm. 



\l, Guiana plants, listed by John Smith '^ as A, intcgerrlmum, which arc not 

 the iiitegcrrimum of Sprengeb 



Asplenium integcnimum and .1, kapplerianum were merged l)y Moore ^ who 

 cites many specimens. From description A kapplerianum^ certainly appears to 

 be distinct from .4, infcoerrimnm and rather closely* related to A, s^aJiolfolium. 

 Splitgerj^)er*s van /? is referred by Kunze ^ to Asplenium falx Desv.^ which is 

 probably a true sj'iionym of saJicifolhim, 



Tn conclusion it may be said that tlio plant figured by Mettenius as 

 A, salici folium is probably still without a name, imless it is found to 



be identical with A. rectangulare here described. 



A NEW GENUS OF ASPLENIOID FERNS. 



Holodictyuni Maxon, gen. nov.i' Plate LVI, FlGt'RK 4, 



Fronds numerous, denseiy cespitose upon an erect rliizome, simple, linear- 

 lanceolate, chartaceo-membranaceoTis, costate; venation wholly areolate, tlie 

 areoles in about 5 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 slight angle from the costa, 

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



single, straight or nearly so, firm, persistent, attached alon^^ one side. 



Type, AHplrnium r/JneshrcgJitii Fourn. 



Ilolodictyum differs from Asplenium and Diplazium in its pronounced hex- 

 agonal areola! ion, this accompanied by a complete suppression of lateral 



'^Tijds, Nnt. Gesch. 7: 418, 410. 1840. 



^ Linniea 9: G4. 1834. 



*^ London Journ. Bot. 1: 190. 1842. 



d Tud. Fil. 138, ISof). 



^Linmea 21: 216. 1848, 



^ MCm. Soc. Linn, Paris 6: 274. 1827, See Mettenius' description (Abhand. 

 Senck. Nat. Gesell. 3: 145 18G0) with reference to Fee's figure. 



^The name is from Greek 6Xos, whole, and ^Iktmov, a net, referring to the com- 

 plete anastomosis of the veins. 



/ 



