252 200 



As typical I consider the following specimens: 



Nicaragua: San Juan del Norte, Charles L. Smith nr. 2098 (exactly typical). 



Costa Rica: Puerto Limon. Hot de la Uvita, Pittier nr. 12703 (C, W) — Suerre, Llanuras de Santa 

 Clara, 300 m.; J. Donnell Smith nr. 6929 (W) — Rio Turrialba, Donnell Smith nr. 5093 (W). 



F O r m æ : 



Guatemala: Heyde nr. 731 (W; segments acute). 



Panama: Chagres, Fenoler nr. 403 (= Hayes nr. 3(i (W, texture thinner, lobes narrower, base of lower 

 pinnæ about as in D. tristis). 



var. minor. Pinnae ca. 15 cm long by 2 cm broad, dark-green. Veins about 

 10 to each side, the lower 4 connivent to sinus. — Resembles very much D. tetra- 

 gona var. 2, from which it differs by its erect rhizome, which is up to 10 cm high. 



Guatemala: Alta Verapaz, Vicinity of Secanquim, about 450m., Maxon and Hay nr. 3196, 3217 (W). 



251. Dryopteris paucipinnata (Donn. Smith) Maxon, Contr. U. S. Nat. 



Herb. 13: 19. 1909. 



Sj'n. Nephrodium Fendleri var. paucipinnatum, Donnell Smith, Bot. Gaz. 12: 

 134. 1887. 



Type from Guatemala: Alta Verapaz, Petet, leg. H. von Türckheim, ed. Donn. 

 Smith nr. 667 and 767 (W, B). Other specimens from the same region were col- 

 lected by Bunnell Smith nr. 1556 (W) and v. Türckheim nr. II. 1690 (W). 



Described in detail by Maxon (loc. cit.) and by him rightly separated from 

 D. Fendleri as a distinct species. It is not at all allied to /). Fendleri, which belongs 

 to a different group, but intermediate between D. Schaffneri or D. tristis and Ü oblite- 

 rata. It resembles D. Schaffneri in its submarginal sori and distinct, persistent in- 

 dusia, D. tristis in the cuneate base of the pinnæ and in venation, D. obliterata in 

 the general habit. It differs from all these species by its practically quite glabrous 

 leaf, rigid to coriaceous texture and warted undei-surface, from the two first-named 

 species by its less incised pinnæ, which is pinnatifidly cut about Vs. From 1). Fend- 

 leri it differs inter alia by its remote, alternate pinnæ with a cuneate base, venation 

 and lack of aërophore and febrils beneath. Generally the lowermost 4—6 veins are 

 connivent to sinus, but occasionally the lower pair are united. Sporangia glabrous. 



252. Dryopteris Fraseri (Mett.) O. Ktze. Rev. 3: 812. 1891; C. Chr. Ind. 266. 



Syn. Aspidium Fraseri Mett.; Kuhn, Linnaea 36: 109. 1869. 

 Nephrodium Fraseri Bak. Syn. 495. 1874. 

 Nephrodium brachyodon Sodiro, Cr. vase. quit. 268. 1893! 

 Type from Ecuador, leg. Fraser 1859 (B!); identical specimens from the 

 same country were collected by Stübel nr. 762 (B) and Sodiro (C). 



A large species, very characteristic in habit but otherwise closely allied to the 

 other large species of this group. Pinnæ at distances of up to 10 cm., opposite, 



