48

BLECHNUM.

foliate or pinnate and bi- or trijugate with the margin scabrous,terminal pinna (very large) oblong-lanceolate rather obtuse,lateral ones subsessile elliptical or oblong obtuse or roundish,superior ones often auriculiform, stipes of middling lengthroughish a little paleaceous at the base, caudex short hori-zontal branched stoloniferous sparingly fusco-paleaceous.”Kze. — Link. Hort. Reg. Berol. ii. p. 75. Kze. in Schkh. Fil.Suppl. i. p. 128. t. 57. /. 2. Mett. Fil. Hort. Lips. p. 62.Liebm. Fil. Mex . p. 86.

Hab. Brazil , Sellow {Presl). Cumana, Columbia, Moritz, n. 126. Mirador,Mexico , Liebmann, Linden, n. 72, and Galeotti , n. 6302 ( all in Herb. Nostr.).Guatemala , Skinner {in Herb. Nostr.). —I have no well authenticated specimenof this species in my herbarium, but Liebraann's specimens quite agree with thefigure and description of Kunze. It is probably named intermedium as formingthe connecting link between some of the pinnated vars. of Bl. Lanceola and ournext species, BL gracile. But it is indeed a much larger and stouter plant than theformer, has an obtuse base to the terminal pinna, and the lateral pinnae are morefully developed, but not always obtuse. It will be more difficult to distinguish itfrom Bl. gracile.

11. Bl. gracile , Klfs.; “frond 4-5 inches pinnate 4-jugate,pinnae an inch or an inch and a half long lanceolate subfal-cate shortly petiolate the margin minutely denticulate, ter-minal one 2 inches long on one side auriculato-adpendiculate,sterile ones broader, stipes 4 inches long filiform chaffy atthe base, sori close to the costa neither extending to the basenor to the apex sometimes interrupted on the terminal pin-nule.” Klfs. En. Fil. p. 158.— Fee, Gen. Fil. p. 73. Kze. inLinneea, ix. p. 6. Mart, et Galeot. Fil. Mex . p. 51. Presl,Epim. PI. p. 108. Kl. in Linneea, xx. p. 349. Brack. Fil.U.S. Expl. Exp. p. 129.

Hab. Brazil {Otto, specimen above characterized by Kaulfuss), Sellow,Brackenridge. Peru , Pceppig {Kze. in Herb. Nostr., frond almost a foot long10-jugate), Mathews, n. 1806. B. Guiana, R. D. Schomburgk , n. 1177 {Klotzschin Herb. Nostr.). Mexico , Jurgenson. Venezuela , Fendler, n. 113.—Preslgives several other localities, but I know not what dependence is to be placedupon them: for example, he refers “ Gardner, Brazil , n. 184,” hither, but I havealways considered that plant to be a form of Bl. occidentale ; and on the otherhand, he brings under this species Galeotti’s Blechnum, n. 6302, which I placeunder Bl. intermedium. Indeed, I find great difficulty in referring this group ofpinnated Blechna to the respective species of the genus. Kaulfuss’s descriptionof his Bl. gracile appears to me to accord much better with Bl. intermedium ofLink, than with what I receive from Germany as Bl. gracile; and Kaulfussexpressly says of it, “ Bl. Lanceola, Sw., et Bl. trifoliatum, Klfs., forte nilquam hsec stirps, aetate juvenili,” which he would hardly have said of thelarge, multipinnate forms, so often considered to be Bl. gracile. Such, as itseems to me, may more correctly be considered as a passage to Bl. longi-folium.

12. Bl. Fendleri, Hook.; caudex very slender creeping or