19 71 



8. Dryopteris patula (Sw.) Und. Our nat. Ferns ed. IV. 117. 1893. 



Syn. Aspidium patiilum Sw. Vet. Akad. Handl. 1817: 64. 

 Lastrea polystichoides Pr. Epim. 38. 1849! 

 Aspidium imbecile Kze. ; Ettingsh. Farnkr. tab. 107, fig. 10, tab. 109 f. 1. 1865! 



Tj'pe from Brazil: Minas Geraes, leg. Freyreiss (S!). 



To tilis species I refer a long series of forms, several of which are no doubt 

 good species. The Brazilian type is thin-leaved, finely glandular throughout, the 

 under-surface not much paler than the upper one; pinnæ about equal-sided, the 

 pinnules more deeply lobed on the anterior side, the segments broad, shallowly 

 toothed; indusium rather small, reddish, densely glandulose. 



Minas Geraes: Caldas, Mosen nr. 2183 (H) — Serra da Piedade, Warming 

 nr. 871 (H). - Glaziou nr. 15759 (H). 



Best agreeing with the type is a plant from Jamaica, Hart nr. 153 (W). 

 It is smaller and densely glandular throughout. 



In Mexico and the Andes southwards a number of forms occur, which are 

 described under several names but which I have failed to distinguish with certainty. 

 The nomenclature is very confuse. Most authors refer the different forms to a 

 single species, D. patula or Nephr. mexicamim; as shown above I believe that 

 Presl's species is the same as Asp. flaccidum Fourn. and probably specifically 

 difl'erent from D. patula. I shall mention some of the more characteristic forms. 



1. Very near the Brazilian type, but larger; pinnæ up to 25 cm. long, like the 

 pinnules unequal-sided at base; surfaces slightly glandulose, the indusia large, flat, 

 often peltate, finely glandular. Here I refer: 



Aspidium paupertinum Kze. Linn. 18: 345. 1844, and 



Aspidium apertum Fée, 8 mém. 106. 1857; 



Dryopteris aperta C. Chr. Ind. 252. 1905. 



Mexico: Oajaca, inter Comaltepec et Trapiche de la Concepcion, Liermann 

 nr. 2404 (H) — Orizaba, Izhuatlanzillo, Bourgeau nr. 2360 (H). 



Aspidium leptorachis Kze. Linn. 18: 346. 1844 is evidently a less cut form of 

 the same. The short, obtuse pinnules are deeply serrated, scarcely pinnatifid. 

 Aspidium roseum Fourn. Mex. pi. 1: 97. 1872 is probably also belonging here. 



2. var. chaerophylloides (Moritz) Bak. Syn. 276. 



Like the preceding form, but surfaces and indusia not glandulose. It varies 

 in size and cutting. 



Guatemala: Alta Vera Paz, Cubilquitz, v. Tuerckheim ed. Donn. Smith nr. 8643, 8G4,') (W) — Jalapa, 

 Laguna de Ayarza, Heyde et Lux ed. Donn. Smith nr. 4081 (W) — Alta Vera Paz, Coban, 

 V. Tuerckheim, ed. Donn. Smith nr. 703 (W); v. Tuerckheim nr. 11 1370 (W) — Dept. 

 Santa Rosa, Sambrerito, Heyde et Lux ed. Donn. Smith nr. 6408 (\Vj. 



Nicaragua: He d'Omotépé, Levy nr. 207 (H), 



Costa Rica: Bords du Rio Torres à San José, Tonduz nr. 9791 (W) — Haie prés San José, Tonduz 

 9780 (W) — Haies à la Verbena près Alajuelita, Tonduz nr. 8790 (W) — Alajuela, Alfaro 

 ed. Donn. Smith nr. 6031 (W) — Alto del Sacatal, Pittier nr. 10547 (W) — San .José, 

 Biolley nr. 102 (C, CC, H, W) — Tablazo, Biolley nr. 74 (C, CC, W). 



10* 



