Tab. 



1 



58. RATZEBURGIA pulcherrima . 



Rottboellia pulcherrima TVallich. mss. 



Crescit in India orientali. 



Gramen caespitosum, procumbens, stoloniferum ; radicibus fibrosis ; fibris filiformibus, flexuo- 



■ r 



sis, fuscescentibus, villosis. Culmi diffusi, simplices, filiformes, teretes?, ad nodos inferiores geni- 

 culati, glabri, apice monostachyi, S-ia-poUicares; nodis contractis , imberbibus, nigris. Folia 

 linearia , apice rotundata, plana vel complicata , rigida , striata, nervo medio subtus prominente, 

 margine crassiuscula el scabra, supra glabra, subtus pilis raris conspersa, tardius glabrata, 8-20 

 lineaslonga, 1 ilineamlata^ in culmis sterilibus abbreviatis disticho-patula. Vaginae usque ad 



_ _ r 



basim fissae, compresso-carinatae^, striatae, glabrae^ inferiores nodis longiores, superiores iis di- 

 midio breviores, in culmis sterilibus disticho-imbricatoe. Ligula exserta, rotundata, membrana- 

 cea, glabra, Spica e summa vagina longe exserta, linearis, spiculis paraUele conipressa, recta, 

 tardius articulata , 2-2 ^-poUicarls 5 rhachis spiculis contrarie geniculato-flexuosa , triangularis ^ 

 externe planiuscula, trisulcata, viridis et glabra \ interne ad angulum prominentem pubescens. 

 Spiculae tres in quolibet articulo j duo laterales gequales, fertiles, sessiles, per ghimas interiores 

 inter se contiguoe , rhachim ad unum, spiculam pedicellatam tabescentem ad alterum latus margini- 

 busspectantes, articulumpaulosuperantes, oblongo-ellipticoc, glumisparallelecompressx,biflorae; 

 flores sessiles^ inferior unipalaceus , neuter j superlor subbipaleaceus, hermaphroditus. Spicula 

 intermedia pedicellata^ tabescens, ad squamulam parvam, ovatam, obtosam, glabram, cucul- 



lato-comphcatam, cumpedicello continuam redacta; pediceUus adscendenti-crectus, longitudine 

 fere articuli eique oppositus, hber, subtrlangularis , externe canaliculatus , glaber, interne ad 

 angulum prominentem pubescens. Glumae duae, inae^ales j inferior (exterior) elliptico-oblonga, 

 convexiuscula , coriacea , apice membranaceo-producto , bifido (lobis latis , truncato-rotundatis , 

 ad marginem glumae decurrentibus ) , novemnervia , nervis ijuatuor marginaUbus obsoletis , 

 quinque dorsalibus prominentibus , per venas transversas eleganter anastomosantibus , IntervalUs 

 profunde favoso-excavatis , albida, glabra, marglne incrassata et argute dentata, dentibus incras- 

 satis obtusis_, dorso lineoUs sangulneis obsita j gluma superlor ( exterior) longltudine inferior sed 



margini approximatis 



h 



subcoriaceo-membranacea , planiuscula , marginibus involutls, albida , externe piUs punctuUfor- 



L 



mibus obsita. Flos inferior ( glumae exteriori contiguus ) unipaleaceus, neuter, gluma superiore 

 paulo brevior^ palea inferior oblonga , obtusa, tenuissime membranacea, hyaUna, eoervia 



absqiie appendice, oblonga, acutiuscula, trlnervia, nervls lateraUbus 



convexiuscula ; marginibus inflexis, superne ciUatis, Palea superior, S(juamulae et genitaUa plane 

 nuUa. FIos hermaphroditus : palea inferior glumae interiori contigua, flore ncutro paulo brevior, 

 oblonga, acuta, tenuissime membranacea, hyaUna^ subconcava, enervia, glabra; palea supe- 

 rior minutissima, ovario dimidio brevior, lata, irregularlter triloba, lobo medio irregulariter bi- 

 dentato, hyaUno-membranacea. Stamina tria, hypogyna* duo lateraUa; unum anterius, paulo 



> 



longius , paleae exteriori contiguum. Filamenta capillacea, glabra. Antherae oblongo-Uneares , 

 utrin^ue bifidae, paUide croceae, glabrae, lobis obtusiusculls , biloculares, secundum longitudi- 

 nem dehiscentes . PolUnis granula minutisslma, subglobosa, hyalina. Scjuamulae duae, anticae, 



L 



triangulari-dolabriformes, apice inas^aUter repando-bil obae , carnoso-membranacea? , glabrae. 



12;) 



