LORKNSERIA. — Acrostichi spec. Lin. — Onocleae spec. Michx. — Woodwardiae spec. 

 Smith, Pursh. — Frondes heteromorphae. Sterilis: venae inlernae ramosissimae venulisque con- 

 formibus in ni^culas hexagonoideas subaequales pluri- (quinque-) seriales anastomosantes. Ferti* 

 lis: venae internae venuhsque conformibus in unicam seriem macularum hemihexagonoida- 

 rum anastomosantes. Sori venis macularum inserti, imnifrsi, costae paralleli, lineares, al- 

 terni. Indusium coriaceum, hneare, fornicatum, sorum involvens. 



Rhizoma repens. Frondes heteromorphae, stipitatae: sterilis herbacea, transparens, 

 pinnata apicem versus pinnatifida, pinnis laciniisque aut oblongo-Ianceolatis aut pinnatifidis, 

 venis venulisque tenuibus; fertilis rigidula, coriacea, pinnata , pinnis aut linearibus denticu- 

 latis aut pinnatifidis, venis crassioribus in maculas costales magnas anastomosantibus. Fas- 

 ciculi vasorum stipitis sterilis L. areolatae tres tereles tenues, slipitis fertilis unicus teres 

 centralis tenuis strato nigro vestitus, in altera specie ignoti. Rachis costaeque subtus pa- 

 leacea. Sori cavitatibus respondentibus et in superiori pngina frondis prominuHs immersi, 

 costa pinnarum laciniarumque ad sori spatium efformandum contribuente indeque elevata et 

 acute marginata. Indusium fuscum, rigidum. Receptaculum lineare , convexum. Species 

 duae, boreali- americanae. 



DifTcrt a Woodwardia frondibus heleromorphis , venis venulisque frondis sterihs in 

 series plures macularum hexagonoidearum subaequalium oblongarum, frondis fertilis in uni- 

 cam seriem macularum costaliurn magnarum anastomosatitibus, soris longioribus. — Genus 

 dicalum in honorem Gustavi Lorinser, Med. D., qui dissertationem egregiam sistens conspe- 

 ctum Stachyopteridum in Rohemia sponle nascentium scripsit. 



L. AREOLATA. — Louchitis major virginiana folio vario, aliis Polvpodii in moduni con- 

 junctis Moris. hist. III. 569. sect. 14. t. 2. f 24. — Filix floridana praelongis et angustis 

 pinnulis ad oras seminibus fimbriatis, pediculo splendente nigro Piuck. pliylogr. t. 399. 

 f. 1 (frons fertilis). — Aci ostichum areolatum Lin. spec. 1526. Gron. virg. 124. — Osmunda 

 caroliniana Walt. car. 257. — Onoclea nodulosa Michx. amer. II. 272. Swartz syn. 111. — 

 Woodwardia angusiifolia Smith aet. taur. V. 4lI.Swartz s\n. 116. Pursli fl. bor. amer. 663. 

 Spreng. svst. IV. 94. Fresl tent. pterid. 101. — Woodwardia floridana Schk. fil. 103. t. IH. 

 — Woodwardia onocleoides Willd. spec. V. 416. Desv. in ann. soe. lin. par. VI. 285. Link. 

 fil, hort. ber. 81. 



Habitat in Juniperetis etTaxodietis umbrosis paludosis Americae boreahs : Pennsylva- 

 niae, Virginiae et Carolinae (Micliaux), in Novo Eboraco (A, Gray), a Novo-Eboraco usque 

 ad Floridam (Pursh). 



L, THELYPTEROiDEs. — Woodwardia thelypteroides Pursh ff. bor. amer. 663. Spreng. 

 syst. IV, 94. Presl lent, pterid. 101. 



Habitat in Carohna australi (Pursh). 



AsPLENiUM LEPTURUs ; froudc coriacea lanceolata glaberrima pinnata , pinnis petiola- 

 tis oblongo-Ianceolatis angustato-acuminatis incisis basi cuneato-aculissimis, acumine remole 

 serrato, incisuris apice truncato inaequaliler angusteque dentatis, stipite rachique canalicu- 



