MAXOX — STUDIES OF TROPICAL AMERICAN FERNS. 499 



below, in tlu* upper parts ami uii the racbis mixed with longer simple hairs, 

 those at length predominating; lamina triangular-deltoid, 40 cm. long, 37 cm. 

 broad, about 15 to 17-jugate, decreaf?ing regularly at tlie apex; pinuix? straight 

 or nearly so, opposite throughout, short-stalked (1 umi,), lanceolate, attenuate, 



the mldvein stout, conspicuously elevated, covered with erect long and short 

 simple hairs, these extending also to the veins and veinlets: lowermost pinme 

 13.5 cm. long. 2.8 cm. wi<le, borne at an angle of 1)0°, by the reduction of the 

 two or tliree lowermost pairs of segments nearly ligulate at the base (8 mm. 

 wide), iucrcasing abruptly to the full width (2,8 cm.), in the remainder of the 

 basal half lobed about one-half the distance to tlie midrib, the lobes gradually 

 much shallower toward the entire attenuate apex; lobes approximate, oblique^ 

 sliglitly falcate, rounded-truncate, those of the su^ierior and inferii^r sides about 

 equab the largest <i mm. hroad. with about *J or 10 pairs of simple veinlets, the 

 lowermost two (or three) pairs running to the narrow sinus (or tljc first pos- 

 terior voinlet sometimes only short-excurrent ) : succeeding piniijie gradually 

 smaller, of the same general form, gradually less reduced at the base, the 

 sixth pair of pinnae with oidy iht^ first pair of segments reduced, upper pinute 

 witli base as broad as the middle, ultimate pinnae greatly reduceil (1.5 to 2 

 cm. long), finally adnate, decreashig ri'gularly into a short entire apex; sori 

 of the largest segments or 10 pairs, large, medial, the hulusium light brown, 

 with numerous long simple white hairs* 



Type in the U. S. National Herbarium, no. 425025; from the Jcnman her- 

 iKirium, marked in Jenmai/s hand as from the *"Barima River, British Guiana, 

 A second sheet has identical data, 



]). latiusciila is of the section Eudryopteris and closely related to i>. pyrami- 

 dafa ; to be distinguished by its stouter Aascular parts, opposite and less deeply 

 lobed pinmc and especially by the greatly reduced basal segments of most of 

 the pinnae, even the upper pinna* nevt^r broader at the l>ase than at the middle. 

 It is less nearly allii'd to D, joJfu^ioith 



Elaphoglossuni palmeri L'nderw. tS; Maxon, si), u 



»» 



iM 



Mature plants 22 to 45 cm. high, with narrow fronds covered on both sides 

 with more or less scattered irregularly stellate scales; rootstock slender, creep- 

 higj densely covered with coi>ious dark-hrowii sinning prickly-cilia le linear- 

 lanceolate scales, these continuing a short distance up the slender stii>e, there 

 niingled with whitish or rusty long-ciliate scales; sterile fntnds with stipes 



5 to IS cm. long, lamina 20 to 30 cm, long, very narrowly elliptic or 

 oblanceolate, usually widest (0 to IS nun.) one-third the distance below the 

 ai)ex, gradually long-tapering below, tapering more rapidly toward the apex, 

 Ifoth surfaces covered (often densely so when young) with rather small 

 whitish or slightly brownish, ciliate or irregularly stellate scales, those of the 

 niitlrib beneath and on the margins with a broader body: sporophyls similar 

 hi shape to the sterile fronds but shorter and Avith relatively longer stipes, cov- 

 ered more or less closely with irregularly stellate scales above, fibrillose with 

 (^iliate scales on the midrib l>eneath : veins distinct, oblique, mostly once-forked 

 (usually near the hase), slightly thicken(Hl towai'd the end and scarcely reach- 

 ing the margin thus forming a condition between §Stenoneura and §Condy- 

 loneura but nearly approximating the former. 



Type in the T\ S'. National Herbarium, no, 372375; collected near El Guama^ 

 Province of Pinar del Kio, Cuba, on banks of an open stream in the pine moun- 

 tains, March 12, 1000, by William Palmer and J. II, Riley (no, 280). Also 

 collected by Charles AVright (no. 3057). in the year 18G5, probably in the same 

 part of the island. The ty]>e specimens are lacking in sporoithyls but rei)resent 



20370— OS 3 



