270 218 



269. Dryopteris Andreana (Sod.) C. Chr. Ind. 252. 1905. 



Syn. Menischim Andreamini Sodiro, Rec. 71. 1883; Cr. vase. quit. 392. 1893. 



Type from Ecuador, Andes quitenses, leg. Sodiro (C!). 



Closely related to the preceding species, but its sori all meniscioid, the base 

 of the sessile pinnæ not subcordate but bluntly rounded with the lower side of the 

 upper pinnæ adnate to rachis, without aërophore (?), rachis, costæ on both sides 

 and secondary veins beneath sparsely pubescent by very short, simple hairs and 

 the venation somewhat different. Secondary veins at distances of 4—6 mm with 

 about 17 — 18 transverse, close and rather convex tertiary veins; the free, included 

 veinlet short, rarely extending beyond the middle of the aréole, sometimes nearly 

 obsolete, its apex seen from above often broadly clavate as in D. ensiformis. Recep- 

 tacle glabrous. — Pinnæ 20— 40 cm long, 5— 7 cm broad (18—24 by 3 — 5 cm according 

 to Sodiro). — The species is not very near D. reticulata. 



270. Dryopteris pachysora Hieron. Hedwigia 46: 351 tab. 7 fig. 19. 1907. 



Type from Ecuador, Mt. Abitagua, Stübel nr. 897 (Bl). 



Differs from D. Andreana but agrees with the following two species by its long- 

 slalked pinnæ with a subequally cuneate base. Transverse veins 12 — 14, the free 

 veinlets long, extending beyond the middle of the aréole, its apex scarcely clavate, 

 or occasionally reaching the next cross-vein. The confluent sori very short and 

 thick. Costæ above very sparsely setose, the leaf otherwise glabrous. 



271. Dryopteris falcata (Liebm.) C. Chr. comb. nov. 

 Syn. Meniscium falcatum Liebmann, Vid. Selsk. Skr. V. 1: 183. 1849. 

 Phegopteris falcata Mett. Fil. Lechl. II. 23. 1859. 



Meniscium Jungersenii Fée, Gen. 223. 1850—52; Fourn. Mex. PI. 1: 73 

 (as Jurgensenii). 

 Type from Mexico: Depart. Oajaca, Lacobe, Liebmann (H!). Also Costa 

 Rica, Buenos Ayres, Pittier nr. 4839 (C). 



A very large species, widely different from typical D. reticulata. Rachis angular, 

 glabrous, brownish-stramineous. Pinnæ linear-elongate, 40 cm long, 3'/2 cm broad, 

 dark-green, thinly membranous, apex long acuminate, margins undulato-crenulate, 

 base subequally cuneate, long-stalked (petiole 2— 2' i cm long), upper surface, the 

 very sparsely setose costa excepted, glabrous, costa beneath short-hairy. Secondary 

 veins at distances of about 3 mm with 12 — 13 transverse, a little convex veins; the 

 included veinlets as a rule free but terminating in a subclavate apex above the 

 middle of the aréole, or not rarely prolongated and united with the next cross-vein. 

 Sori small, nearly round, placed at the base of the free veinlet. Receptacle glabrous. 

 Differs from D. pachysora by its much longer pinnæ of thinner texture, the 

 costæ hairy beneath and its small sori, from D. reticulata by its long and long- 

 stalked pinnæ with a cuneate, subequal base, pubescent costæ and short sori. 



