492 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 52 



indusia being attached to the outer margin of the fruit-bearing 

 veinlets. 



The only hving North American species belonging to the section 

 Euivoodzvardia is Woodzuardia spinulosa Martens and Galeotti, de- 

 scribed originally from IMexico, which is found also in Guatemala, 

 Arizona, California, and Washington. This species was formerly 

 included under the Old World W. radicans (L.) Smith, but recently 

 pteridologists have quite generally separated it, principally on the 

 ground that the segments are shorter and less pointed, the row of 

 sterile areoles outside the fruiting row is usually confined to the 

 basal portion instead of being distinctly double throughout, and 

 finally that the segments are separated by rather broad and. round, 

 instead of by deep, sharp sinuses ; the margins of the segments in 

 both species are usually spinulose. 



The fossil species under consideration appears to combine to some 

 extent the characters of both of the above mentioned living species. 

 Thus it has a complete row of areolae outside of the large fruiting 

 row, as in W. radicans, but it agrees with W. spinulosa in having 

 relatively short segments separated by rounded sinuses ; it differs 

 from both in having the margins of the segments entire, or at most 

 slightly undulate. 



The material upon which this species is based was collected by 

 Mr. G. K. Gilbert, of the U. S. Geological Survey, at the Cascades 

 of the Columbia River, Oregon. 



2. A Ne.w Name for Davallia tenuifolia Swartz, as Identified 

 BY Dawson, and Asplenium tenerum Lesquereux 



DENNST^DTIA AMERICANA, nom. nov. 



Plate LXIII, Figure 4; Plate LXIV, Figures 3-5 



Davallia (Stenolonia) tenuifolia Swartz. Dawson, Brit. N. A. Boundary 

 Commission (Rept. Geol. and Resourc. Vicinity 49th Parallel) 1875, 

 Appen. A, p. 329, pi. xvi, figs, i, la, 2, 2a; Roy. Soc. Canada, Trans., 

 vol. 4, 1886 [1787], p. 21, pi. i, figs. I, la, lb; Penhallow, Rept. Tert. 

 PI. Brit. Columbia, 1908, p. 52. 



Asplenium tenerum Lesquereux. Rept. U. S. Geol. Surv. Terr., vol. S 

 (Cret. and Tert. Fl.), 1883, p. 221, pi. xlviA, figs, i, 2. [Not Asplenium 

 tenerum Forster, Florulae Insularum australicum Prodromus, 1786, 

 p. 80.] 



Frond apparently lanceolate in outline, bipinnate, the rachis rela- 

 tively strong, grooved ; pinna? alternate, oblique, lanceolate or some- 

 times linear, pointed ; pinnules deltoid or oblong, oblique, unequal- 



