157 209 
e 
207. Dryopteris Francoana (Fourn.) C. Chr. Biolog. Arb. tilegn. Eug. Warming 
84. 1911. — Fig. 28a. 
Svn. Aspidium Francoanum Fourn. Bull. Soc. Fr. 19: 255. 1872. 
Nephrodium stenophyllum Bak. Journ. Bot. 1884: 363. 
Nephrodium Harrisoni Bak. Ann. of Bot. 5: 326. 1891. 
Dryopteris Harrisoni C. Chr. Ind. 269. 1905. 
Polypodium subintegrum Bak. Journ. Bot. 1877: 164. 
Nephrodium subintegrum Sodiro, Rec. 54. 1883; Cr. vasc. quit. 263. 1893. 
Dryopteris subintegra C. Chr. Ind. 296. 1911. 
Type from Nicaragua: Chontales,leg. P. Lévy nr. 506( Herb. Cosson, Mus. Paris!). 
Differs from the preceding species, its only near relative, by its regularly 
lobed lamina and by the basal veins being much ascending and not always truly 
united; also it grows much larger; I have seen leaves measuring 40 cm in length 
including the stipe, that is equal to lamina in length but generally the leaves are 
much smaller. 
The erect or ascendent rhizome, which is nearly destitute of scales bears 
several (10— 20) fasciculated leaves; voung stipes furnished at base with a few small 
scales with some bi-trifurcate hairs at the margins, glabrous or very sparsely and 
minutely pubescent by stellate hairs, sulcate above. Lamina lanceolate, 1—1'/» cm 
broad below the middle, tapering gradually to the acuminate point, at base short- 
cuneate, dark-green, papyraceous or subcoriaceous, ciliate, midrib above strigose by 
antrorse hairs, midrib and principal veins beneath setose by simple, rigid, patent 
hairs. otherwise glabrous, the margins incised regularly about '3 to the midrib 
into oblique, broad, obtuse or subacute lobes. Veins about 7-jugate, simple (or 
rarely furcate), the lower two pairs connivent to sinus, or, the two basal ones truly 
united and sending a branch to sinus. Sori inframedial, furnished with a sub- 
persistent, setose indusium. Sporangia glabrous. 
D. Francoana is a very constant species. The numerous Central-American 
specimens seen are all alike and the Ecuadorian one (P. subintegrum Bak.) differs 
only by its somewhat thinner texture and smaller, deciduous indusia. BAKER 
referred A. Francoanum to N. Skinneri Hk. (Syn. Fil. 288), but later he described 
the presenl species as new. — Specimens seen: 
Nicaragua: Chontales, Lévy nr. 506 (Mus. Paris, Kew). 
Costa Rica: Jiménez, DowNELL Suirn nr. 5097 (B, C, W); ALrano nr. 153 /W), 16521 (C) — Tuis prés 
Turrialba, Pirrrer nr. 11236 (C, W) — Vallée de Durui, Talamanca, PrrriER nr. 9406 (C, 
W) — Chilamate, Prrrikg. nr. 7501 (W) — Carrillo, Prrrier nr. 1176 (W) — Llanuras de 
Santa Clara, DowNELL SwrrH nr. 6898 (B, W), 6899 (W) — Foréts de Tsaki, Tonpuz nr. 
9463 (W) — WERCKLÉ (C). 
Ecuador: near S. Miguel, Peripa River, Sopino (C — P. subintegrum Bak.). 
208. Dryopteris Skinneri (Hook.) O. Ktze. 2: 813. 1891; C. Chr. Ind. 293. 
Syn. Aspidium Skinneri Hook. Ic. plant. tab. 924. 1854. 
s Nephrodium Skinneri Moore; Bak. Syn. 287 (excl. syn.). 
