AMARANTHACEvE. Alternanthera. 417 



Altcrnantherae eommode dividi possint in Alternantheras pro- 

 prias, Filamentis duobus castratis, dentibus interjectis bre- 

 vissimis obsoletis ; quibus praeter species Nov.ne Hol- 

 landiie pertinet li). sessile L. : et spurias, Filamentis 5 

 antheriferis, tntidemque sterilibns mauifestis ; quibus re- 

 ferenda ///. Achyrantha, polugonoides , Jicoideum L. alke- 

 que Americanae nondum descriptae. 



1. A. dtnticulata, perianthiis glabris : fobolis ovatis acuminatis 

 utriculo fere duplb long'oribus, foliis angusto-lanceolatis 

 denticulatis glabris : axiliis barbatis, caule procumbente 

 glabro. (T. J. D.) v. v. 



1. A. nodifiora, perianthiis glabris : foliolis angusto-la:iceolatis 

 acuminatis utriculo triplq lcngioribus, foliis lunceolato-li- 

 nearibus denticula-is giaprjs : axillis barbatis, caule ditfuso 

 ramisque tetragonis glabris : ultimis bifariam pubescenti- 

 bus. (T.) v. v. 



3. A. angustifolia* perianthiis extus lanatis : foliolis ovatis acutis 



utriculum aequantibus, glomerulis subgloboss, foliis linea- 

 ribus glaberiimit, caule erecto angulato. (T.) v. v. 



4. A. nana, perianthiis glabrisi ff>Jiolis ovatis bre-viter acumi- 



natis utriculo duplo longioribus, foiiis oblongo-obovatis pi- 

 losis basi attenuata, caufe diffuso hirsuto (T.) v. v. 



ACHYRANTHES. Achyranthis species. L. 



Perianthium 5- rarb 4-partitnm, regulare, tribracteatum, brac- 

 teis simpiicibus, spinescentibus. Stamina 5, basi connata, 

 squamulis rlmbriatis interjectis. Anlhera* bilocularcs. 

 Stylus 1. Siigma capilatum. Ulricu/us monospermus, 

 evalvis. 



Obs. I. Punali3 Juss. dirP.rt tantummodo Bracteis appendi- 

 culatis, nam in P. prostratd (Achyranthes prostrata L ) 

 dentes filarnenfs interjecn sunt. 



Obs. II. Species duae Achyrantliis hactenus ineditge a charac- 

 tere recedunt, altera (?.rboresccns, Insulae Nortblkiae,) flo- 

 ribus 4-ridis regularibus ; altera (aquafica, Indiae orien- 

 talis,) rlonbus 5-fidis, perianthii foliolo posiico dissimili. 



1. A. australis, foliis ovatis acutis v. obtusjs pubescentibus sub- 



tus cipereis mgosiusculis, bracteis periamhio brevioribus : 

 basi subrotunda arista parum breviore. (T.) v v. 



2. A canesrens. foliis ovalibus objusiuscufs tomentosis subtijs 



cineieis molhbus. bracteis perianthio brevioribus, arisij 

 basi snbrutunda fere duplb longiore. (T.) v. v. 



3 h NYS- 



