215 267 



a Meniscium. It is really an intermediate link between Goniopteris and Meniscium 

 and therefore I agree with Mettenius in reducing Meniscium to a subgenus of Drg- 

 opteris. The difference is found mainly in the position of sori; if the sori are born 

 on the vein near the point, where two opposite veins unite, the two opposite sori 

 become with age confluent and thus we have a meniscioid sorus. — D. meniscioides 

 has 8 — 10 lateral pinnæ, about 20 cm long and 3'/2 cm broad. Their edges are car- 

 tilaginous, a little thickened and sparsely ciliate. — Goniopteris roslrata Fée, referred 

 hereto in my Index, belongs to D. glandulosa. 



267. Dryopteris Ghiesbreghtii (Linden) C. Chr. Ind. 267. 1905. 



Syn. Polijpodium Ghiesbref/htii Linden; Bak. Syn. 315. 1867. 



Goniopteris mollis Fée, Gen. 252. 1850—52; 11 mém. tab. 24 fig. 1. 1866. 

 Polypodium crenatum Hk. Fil. exot. tab. 84. 1859. 



Type from Mexico: Teapa, Tabasco leg. Linden nr. 1499 (B!). 



A larger plant than D. Poiteana with only 2—5 pairs of lateral sessile pinnæ, 

 which are 20 — 30 cm long by 5— 8 cm broad, from subentire to irregularly serrulate 

 or lobed. Stipe 3—4 dem long, raised from a creeping, nearly scaleless rhizome, 

 glabrous. Pinnæ slightly strigose on the veins above, densely soft-hairy beneath. 

 Costæ and costules as a rule not stramineous. Veins in 10 — 12 pairs, all, the 2 — 3 

 uppermost pairs excepted, anastomosing under broad angles, generally all meniscioid. 

 Sori about medial on the vein, in some specimens distinctly inframedial, in others 

 nearer the anastomosing point. Sporangia glabrous even as young but intermixed 

 with long hairs from the receptacle. 



Apparently a very distinct species when only the typical form is considered, 

 but it is not always easy to distinguish from the andine forms of D. Poiteana. The 

 best characters is the venation and the glabrous sporangia. The species is confined 

 to Central-America, from Southern Mexico to Costa Rica, a region where Ü. Poiteana 

 does not occur (Mexico) or is rare. I have seen the following specimens besides 

 numerous cultivated ones. 



Mexico: Tabasco, Linden nr. 1499 (B); Rovikosa nr. 575 (W). 



Guatemala: Alta Verapaz, Cubilquitz, v. Tuerckheim, ed. Donnell Smith nr. 8648 (C, W), U 876 (W); 

 Sacolal, V. Tuerckheim ed. Donn. Smith nr. 1407 (W): Charaiquin, v. Tuerckheim nr. 550 

 (Wj; near Finca Sepacuite, Cook and Griggs nr. 281 and (i64 (W); Secanquiru, i\Ia.\on and 

 Hay nr. 3132 (W); Puerto Barrios, Chas. C. Deam nr. 450 (W); near Cacao, Barber nr. 194 (W). 



Nicaragua: Canada Yasira, Dept. Metagalpa, E Rothschuh nr. 117 (B). 



Costa Rica: Talamanca, Tonduz nr. 8659 (W); Hacienda de Guacimo, Tonduz nr. 14572 |\V): Puerto 

 Viejo, Pittier nr. 7503 (W): Jimenez, Alfaro nr. 157 (W), 16517 (C); Port Limon, Cook 

 and Doyle nr. 419 (W); Rio Hondo, Cook and Doyle nr. 496 (W). 



