CATALOGUE. 305 



surface smooth or minutely granular; lines of fruit forking, bursting through 

 the colored powder, and at length nearly obscuring it. — Enum Fil. p. 73 ; 

 Hook. & Grey. Ic, Fil. t. 153 ; Hook. Fil. Exot. t. 10. 



Common in California, anil said to occur as far northward as Vancouver Island, and to reappear 

 in Ecuador. Tbe plant from New Mexico referred to in the Botany of Whipple's Expedition, p. 160, is 

 probably Notholcena Hookeri, which bears a considerable resemblance to small specimens of tbe present 

 species. Commonly called California Gold-Firn. Tbe powder on the under surface of the frond ia 

 usually a clear sulphur-yellow, but varies from deep orange to a pure white. In Hooker's Herbarium 

 are specimens from Nuttall, with three MS. names, G. Orcgona, G. viscosa, and G. pyramidata. 



Gyinnogrniiiine hispida, Mettenms. 



Rootstocks creeping; stalks grayish, puberulent; fronds 5-angled, 1—3 

 inches long and broad, hispid above, tomentose beneath, chaffy like the 

 rachis with minute linear scales, pinnate; lower pinnae much the largest and 

 unequally triangular, again pinnated ; pinnae and lower segments lobed or 

 crenated ; the lobes rounded and very obtuse, the basal ones adnate to the 

 rachis or midrib, and forming an interrupted wing, alternating with the 

 pinnae ; veins all free. — Kulm in Linnaea, xxxvi, p. 72. G. podophylla, 

 Hook. Sp. Fil v, p. 152, in part. G.pedata, Eaton in Robinson's Catalogue, 

 not of Kaulfuss. 



New Mexico (C. Wright, Mrs. Sumner), Arizona (Clarence King), and at the Chiricahua Mts., Dr. 

 Iiotltroek.— This comes very near to G. pedata, Kaulfuss, with which I have heretofore confounded it ; 

 hut it is sufficiently distinguished by the rounded segments, and especially by the decurreut basal lobes, 

 which form an interrupted wing on the main and secondary rachises, much as in Thegopteris pohjpo- 

 dioides. 



III. N0TH0L2ENA. R. Brown. 



Sori on the veins at or near their extremities, roundish or oblong, soon 

 more or less confluent into a narrow marginal band, with no proper invo- 

 lucre, but sometimes covered at first by the inflexed edge of the frond. 

 Veins always free. Fronds of small size, 1-3- or 4-pinnate, the under sur- 

 face almost always either hairy, tomentose, chaffy, or pulveraceous. 



A genus of less than forty species, most abundant in dry, rocky places from New Mexico to Chile, 

 but two are Mediterranean, and a few occur iu South Africa, Australia, etc. Tbe genus borders closely 

 on Gymnogramme on the one band, and on the other is barely distinguishable from thoso species of Chei- 

 la.nlhes in which the involucre is not well do\ eloped. 



*Frond minutely scaly beneath. 



YotlioCa-iia siiuiata, Kaulfuss. 



Rootstock short and thick, very chaffy with narrow rusty scales ; 

 fronds 6 inches to 2 feet high ; narrow and rigid, simply pinnate ; pinnae 



20 DOT 



