8. Dryopteris patula (Sw.) Und. Our nat. Ferns ed. IV. 117. 1893. 
Syn. Aspidium patulum 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! 
Type from Brazil: Minas Geraes, leg. FREYREIsS (S!). 
To this 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; pinna: 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, MosÉN nr. 2183 (H) — Serra da Piedade, WARMING 
nr. 871 (H). — Graziov nr. 15759 (H). 
Best agreeing with the type is a plant from Jamaica, Harr 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. mexicanum; as shown above I believe that 
PRESL’s species is the same as Asp. flaccidum Fourn. and probably specifically 
different from D. patula. I shall mention some of the more characteristic forms. 
1. Very near the Brazilian type, but larger; pinnz 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, LrIEBMANN 
nr. 2404 (H) — Orizaba, Izhuatlanzillo, BounGEAu 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. pl. 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. TuEnckHEIM ed. Donn. Surru nr. 8643, 8645 (W) — Jalapa, 
Laguna de Ayarza, HEvpE et Lux ed. Donn. Smirn nr. 4081 (W) — Alta Vera Paz, Coban, 
v. TUERCKHEIM, ed. Donn. SurrH nr. 703 (W); v. TuERCKHEIM nr. II 1370 (W) — Dept. 
Santa Rosa, Sambrerito, HEvpE et Lux ed. Donn. Smitu nr. 6408 (W). 
Nicaragua: Ile d'Omotépé, Lévy nr. 207 (H). 
Costa Rica: Bords du Rio Torres à San José, Tonpuz nr. 9791 (W) — Haie prés San José, ToNpuz 
9780 (W) — Haies à la Verbena prés Alajuelita, Tonpuz nr. 8790 (W) — Alajuela, ArLrano 
ed. Donn. SmitH nr. 6031 (W) —- Alto del Sacatal, PrrTIER nr. 10547 (W) — San José, 
BriorrEvy nr. 102 (C, CC, H, W) — Tablazo, BiorLEv nr. 74 (C, CC, W). 
10* 
