XYRIDEAE ku.nth. (Xyris) 11 



Pennsylvania usque ad Georgiam. 2± — Folia l|-2|-poIlicaria, 

 ■| lineae lata, basi equitanti- vaginantia et purpurascentia. Pe- 

 diinculi subsexpollicares, filiformes. Spica ovato-subrotunda, 

 magnitudine grani piperis nigri. Sepala cxteriora lateralia rigi- 

 dula, paliide fusca. Limbus calycis interioris flavus, marces- 

 cendo basi nigrescens. (Descr. juxta spccimina a Beyrichio e 

 Georgia missa.) 



16. X. BULBOSA. Bulbosa; foliis anguste linearibus, ob- 

 tusiusculis, membranaceis, sulcato-nervosis, aciebus glabris; pe- 

 dunculis folia duplo superantibus , superne striato-sulcatis et 

 subtriangularibus, glabris ; spicis (fructiferis) ovatis, acutis, pluri- 

 floris ; sqaamis subrotundo-ovatis, apice rotundatis, convexis, 

 spadiceis, nitidulis, dorso ad apicem area subrotunda rasa cine- 

 rascente notatis; sepalis exterioribus lateralibus oblongo-lanceo- 

 latis, argute carinatis, inaequiiateris, acutis, membranaceis, fus- 

 cescentibus, carina subtilissime birtellis. X. caroliniana (TValt.) 

 JSeyrich. plani. boreali-americ. Xyris Jupicai prope Boston lecta 

 ct a cel. Boott mecum communicata 1830. (specimen 6-poIl.) — 

 In turfosis Georgiae superioris (Beyr.), prope Boston (Boott.), 

 New Jersey (Jacquemont.). — Bulbus ut in graminibus quibus- 

 dam, subovatus, crassitie nuclei cerasi majoris. Folia 9-11-pol- 

 licaria, lineam lata, sulcato-nervosa. Pedunculus bipedalis, in- 

 ferne vaginatus ; vagina antice aperta, aphylla, subtripollicaris. 

 Spica 5 lineas longa. Squamae arcte imbricatae, subcoriaceae. 

 Sepala exteriora lateralia squama parum breviora. Capsula . . . „ 

 Semina creberrima, minutissima, elliptica, basi apicato-umbonata, 

 apice tuberculo conico superata, obsolete costulata, laete fusca, 

 pellucida. (Descr. juxta specimen Beyr.) Potius forma X. brc- 

 vifoliae? Calycis interioris limbus dcfioratus in speciminibusBoott. 

 ct Jacquemont. totus flavus. 



17. X. CAROLINIANA Walt. Carol. 69. Lam. III. 1. 32. Vahl. 

 Enum. 2. 206. Pursh. Flor. 1. 33. Roem. et Schult. Stjst. 1. 551. 

 Mant. 1. 351. Glabra; foiiis gladiato-linearibus, acutis ; pedun- 

 culis compressiusculis, ad unum latus acutangulis, apicem vcr- 

 sus ancipitibus, laevibus, folia longe superantibus ; spicis ellip- 

 ticis, plurifloris ; squamis obovato-subrotundis, dorso convexis, 

 pallidc fuscis, sub apice area rasa ovata cincrea notatis; sepa- 

 lis exterioribus lateralibus carinatis, obtusis, carina praesertim 

 superne alatis: ala margine subfimbriato-laccrata X. flexuosa 



florae. Squamae obovatae, apice rotundatae, laceratae, dorso superne 

 obsolete carinatae, fuscae. Sepala exteriora lateralia oblongo-lanceolata, 

 carinata, acuta, dorso ferruginea, lateribus hyaltno-pallida : carina aptera, 

 scabriuscula. Capsula oblonga, basi styli conica terminata, convexo-plana, 

 unilocularis , trivalvis, sepalis eiterioribus lateralibus brevior; valvae 

 Ivyalino-albidae, oblongae, apice retusae, medio placentiferae; placentae 

 filiformes, tardius solubiles. Semina minutissima, oblonga, acuminata, 

 castaneo-fusca, obsolete striata, funiculo longo suffulta. 



