Ill 163 



with woolly, long, pluricellular hairs, under which is a 



layer of short hairs 186. D. valdepilosa (Bak.) C. Chr. 



5. Sterile and fertile fronds similar. Long hairs few or none. 

 6. Pinnæ incised to a narrow wing to the costa; segments 

 rarely 6 mm broad. 



7. Pinnæ with unequal base, i. e. the lower basal 

 segment shorter than the upper 



179. D. L' Herminieri (Kze.) C. Chr. 

 7. Basal segments equal and often very reduced in 

 the lower pinnæ. Indusium persistent. 

 8. Leaf-tissue of both surfaces finely pubescent. 

 Rachis and costæ with several long hairs. Sori 



medial 183. D. Leprieurii (Hk.) O. Ktze. 



8. Leaf-tissue glabrous. Costæ beneath glabrous or 

 short-hairy. 

 9. Veins raised above. Sori submarginal 



184. D. praetervisa (Kulm.) O. Ktze. 

 9. Veins scarcely raised above. Sori subcostular 



185. D. densisora C. Chr. 

 6. Pinnæ incised to a wing 5 — 8 mm broad; segments 



7—9 mm broad 187. D. insignis (Mett.) O. Ktze. 



1. Most pinnæ distinctly stalked, scarcely incised halfway down to the 

 costa; segments 6 — 8 mm broad; lower 2 — 6 veins on the same side 

 of the costule united along a cartilagineous membrane or keel below 

 the sinus, thus forming 2 — 4 aréoles on each side of the costule. Long, 

 pluricellular hairs none. Lamina upwards suddenly narrowed into a 

 hastate, terminal pinna. 

 2. Indusium very small, rarely seen; 3—4 pairs of lower veins conni- 



vent to the membrane or keel 188. D. glandulosa (Desv.) C. Chr. 



2. Indusium persistent, glabrous, 6 pairs of connivent veins 



189. D. Fendleri (Eat.) O. Ktze. 



177. Dryopteris Wrightii (Mett.) O. Ktze. Rev. 3: 814, 1891; C. Chr. Ind. 301. 



Syn. Aspidium Wrightii Mett.; Eaton, Mem. Amer. Acad. n. s. 8: 210. 1860. 

 Nephrodium Wrightii Hk. sp. 4: 64 tab. 239. 1862; Hk. Bak. Syn. 288; 

 Jenmann, Bull. Dept. Jam. n. s. 3: 142. 1896. 

 Type from Cuba orient., Monte Verde, Wright nr. 824 (S), and collected in 

 the same region by Maxon nr. 4482 (W). — Jenmann has found the species in 

 Jamaica, but I have seen no specimens. 



A very distinct species, which by authors generally is placed near D. scolo- 



