176 124 
3. Rhizome wide-creeping, nearly naked. Costs beneath as a rule 
with small scales. Lamina not narrowed downwards, papyra- 
ceous to coriaceous. Pinne short-stalked. 
? 201. D. gongylodes (Schkuhr) O. Ktze. 
2. Sporangia setose. A tuberculiform aérophore at the base of the 
pinnze beneath. Above the lowermost anastomosing pair of veins 
are 3—4 pairs of veins connivent to sinus....... .. 202. D. Martini C. Chr. 
190. Dryopteris patens (Sw.) O. Ktze., Rev. Gen. Pl. 2: 813. 1891; 
GC Chr, Ark) for Bot. 917: 31 figs (6: 
Syn. Polypodium patens Sw. Prod. 133. 1788; Fl. Ind. oce. 1673. 
Aspidium patens Sw. Schrad. Journ. 1800°: 34. 1801 et auctt. pro parte. 
Polypodium arcuatum Poir. Enc. 5: 528. 1804 (Grenada. Mus. Paris!). 
Aspidium stipulare Willd. sp. 5: 239. 1810 (Plum. t. 23). 
Nephrodium stipulare Jenman, Bull. Dept. Jam. n. s. 3: 93. 1896. 
Dryopteris stipularis Maxon, Bull. Torr. Cl. 33: 198. 1906. 
Aspidium macrourum Klf. Flora 1823': 365; Mett. Aspid. nr. 219. 
Nephrodium macrourum Scott, Gen. ad t. 10. 1834; Bak. Syn. 262. 
Nephrodium conspersum Schrad. Gótt. gel. Anz. 1824:869. 
Aspidium conspersum Kze. Flora 18539': Beibl. 32. 
? Nephrodium polytrichum Schrad. 1 
Nephrodium dissimile Schrad. l. c. 
Nephrodium albescens Desv. Prod. 258. 1827 (Mus. Paris!) 
Lastrea Kohautiana Pr. Tent. 76. 1836! 
Lastrea scabriuscula Pr. Tent. 75. 1836; Epim. 35! 
Nephrodium schizotis Hook. sp. 4: 107. 1862! 
Aspidium abruptum Mart. et Gal. Mem. Ac. Brux. 15: 65. 1842 (f. FOURNIER). 
Type from Jamaica, leg. Swartz (SI). 
In my paper on SwanrZ's type-specimens of ferns (Ark. fór Bot. 9!': 28) I 
have proved that the true Pol. patens Sw. is synonymous with A. stipulare Willd. 
and A. macrourum Klf. The type-specimens are rather small, while A. macrourum 
is a large-growing form, and A. stipulare a form with the upper basal segments 
very enlarged and deeply lobed, but there is no limit between these forms, which 
agree exactly in all characters, the size excepted. 
The genuine D. patens as here understood can be distinguished from related 
species by these three characters: 1) the erect rhizome, 2) the large, ovate, light- 
brown, opaque, entire and commonly glabrous scales of the rhizome and stipe; 
generally they are rather numerous, and 3) by the basal pair of segments, which 
are much prolongated, acute and both parallel to rachis. Otherwise the species 
varies very much and it is scarcely possible to give a description, which covers all 
