160 ONOCLEA, § EUONOCLEA. 



phons ; sterile ones lanceolate, much tapering at both extremi- 

 ties, proliferous and rooting at the apex, and decumbent ; fertile 

 fronds erect, spathulate, obtuse, tapering below into a ivinged 

 stipes. 



F. prolifera, Hook. Gen. Fil. t. I. c. Fee, Gen. Fil. p. 317- 

 J. Sm. Cat. Cult. Ferns, p. 54. Hook. Fil. Exot. plate 36. 

 Aspidium proliferum, Hook, et Grev. Ic. Fil. t. 96 {710 f Br.). 

 Aspidium Fadyenii, Metten. Aspid. p. 35. Polystichum Gre- 

 villeanum, Pr. Tent. Pterid. p. 82. 



llab. Jamaica, high and shady woods, Sloane, M'Fadyen, Dr. Aler. Prior. 

 Mountains of Cuba, C. Wright. — A very reniarkahle Fern, so unlike anything in 

 the Nepkrodium-^voxx]), tliat I cannot but tliink it deserves to rank as a genus. 

 In our figures in ' Icones FiHcntn' the invohicres are incorrectly represented (from 

 the dried specimens) quite orbicular and peltate. 



7. Onoclea, Metten. 



Onoclea and Struthiopteris of recent authors. 



(Onoclea, Hook. Gen. Fil. tab. LXXII. Ragiopte- 

 ris, Pr. Calypterium. Bernh. Struthiopteris, Willd. Hook, 

 Gen. Fil. tab. LXIX. Osmundse sp., Linn.) 



Sori dorsal on the changed and contracted pinnse or pin- 

 nules of the fertile fronds, and quite concealed by their re- 

 volute margins. Involucres very thin, delicate, hemispheri- 

 cal or half-cupshaped, originating at the inferior side of the 

 sorus, or wanting. — Caudex erect or creejnng. Fronds slipi- 

 tate, dimorphous, pinnate or pinnatifid rvith lohed pinnce or 

 segments. Veins free or anastomosing. — § I. Onoclea, L, 

 Sw. Fet'tile fronds bipinnate, pinnules recurvato-globose, invo- 

 lucres pisiform manifest. Vehis of tlie fertile fronds copiously 

 anastomosing. — § H. Struthiopteris. Fertile fronds pin- 

 nate, pinn(B flat tish or torulose. Veins all free, pinnated. In- 

 volucres very fugacious. 



1. O. (Euonoclea) sensibilis, Linn. Sp. PL p. 1517 ; Willd. 

 Sp. PL 5. p. 287. Siv. Syn. FiLp. 1 10. Willd. Sp. PL v. ;;. 288. 

 Schk. FiLp. 95. /. 102. Mich. Am. p. 272. Hook. Fl. Bor. Am. 

 W. p. 62. Asa Gray, Man. Bot. Illustr. p. 599. Ragioj;)teris 

 onocleoides, Pr. Tent. Pterid. p. 96. /. 3. /. 9. 10 [fertile 

 frond only). — Var. /S, obtusiloba. Hook. 1. c. ; lubes short 

 very obtuse, pinnee subpinnate at the base. — Onoclea obtu- 

 siloba, Schk. FiLp. 95. /. 103. Pursh, Am. ii. p. 665. Ragio- 

 pteris, Pr. Tent. Pterid. p. 96. 



