4 



Tab. i55 et i56. ARUNDINARIA. verticill ata . 



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) 



« 



4 



.. Ramulis fasciculato-verticillatis^ superioribus aphjllis; spiculis ih apice ramu 

 Jorum 1-5, alternis, subracemosis^foliis lineari-lanceolatis, utrinque scabris. 

 Arundinaria verticillata Nees ab Esenb, Agrostogr. BrasiL p, 628. 



Crescit in Brasilia. %. 



T 



Rami stricti, teretes, crassitle pennae cygnaeae, lignosi, medulla alba farcti, leviter slriati, 

 glabri, stramineo-flavidi 5 internodiis 8-12-pollicaribusj ramuli creberrimi, fasciculatim e nodis 

 ramorum erumpentes, verticillato-congesti , simplices, graciles, subpedales, foliati, apice flori- 

 feri, basi vaginis aphyllis abbreviatis imbricatis cincti, illi nodorum superiorum duplo triplove 

 breviores, aphylli ; nodis imberbibus. Folia insecjuilatera, lineari-lanceolata , acutata , basi obli- 

 qiie rotundata et brevlter petiolata, plana, obsolete nervosa, striata, nervo medio tenui, mem- 

 branacea, rigida, utrinque margineque scabra, supra laete vlridia, subtus glaucescentia , ^-^" 

 pollicarla, 6-9 llneas lata; petiolo complanato, glabro, cum vaginaarticulato. Vaginae ramorum 

 nullae, iUae ramulorum usque adbasim fissae, teretes, glabrae, superne striatge, apice rotundato- 

 emarginatae, inferiores internodils multo breviores , superioresiis longiores, imbricatae. Ligula 

 nulla. Splculae i-5, in apice ramulorum subracemosim dispositae , alternae, pedlcellatae, lineari- 

 lanceolatae, teretlusculae , B-ii-florae, ses^ui-vel bipollicares ; pedicellis compressls, puberulo- 

 scabrlusculis , cum spicula haud articulatls. Flores dlstichi, dlstantes, blpaleacel, hermaphrodlti; 



infimus Interdum unlpaleaceus, neuter, glumae superiorl simillimus, sed major ; terminales steriles. 



■ 



Rhachls splculae flexuosa , sub florlbus artlculata; artlculls parum complanalis, superne gradatira 

 incrassatls, interne canaHculalis , ubique pubescenti-scabrls , 2 ^-3 lineas longis. Glumae duae, 

 ovato-oblongae , acutato-mucronatae , concavae, multlnervlae , membranaceae , glabrae, pallide 

 vlrldes, floribus contlguls brevlores eosq[ue Involventes, Inferior brevlor, subnovem-, superlor 



sub i3-nervla. Paleae duae, membranceae, inaequales; inferlor ovato-oblonga , acutato-mucro- 

 nata, concava, multl-(sub 21-) nervla, glabra, pallide vlrldis; superior nunc paulo brevior, nunc 

 longlor, ovato-oblonga , acutiuscula , glabra, argute blcarlnata, carlnis scabris, inter carinas 

 sub trlnervla^ marglnibus qulnquenervlls, inflexls, genitalla amplectentibus. Squamulae tres, 

 hyallno-membranaceae, apice vlx clllolatae, glabrae, Inaequales, ovarlum superantes, ima basi 

 connataej laterales majores, InaequIIatero-ovatae, obtusae; Interlor | brevior, aequllatera, obo- 

 vato-subspathulata , acutluscula. Stamlna trla, hypogyna, sequalia; unum anterius ; duo latera- 

 lia. Filamenta linearia, hyalina, glabra. Antherae longlsslmae, tres lineas longae, lineares^ bilo- 

 culares, basi blfidae, aplce acutato-submucronatae , mucrone subclavato, flavae, glabrae, secun- 

 dum longltudlnem dehiscentes. Ovarlum oblongum, inferne attenuatum, glabrum. Stigmata 

 duo (trla, Interdum duo, teste Nees), termlnalia, elongata, antherls dimidio breviora, pilosa, 

 hyalina, albida; pilis brevlbus, slmpHcibus vel bifidis?, hyallnls. Fructus oblongus, stylo per- 

 slstente subulato cuspidatus, teretiusculus, embryoni parallele compressiusculus, obsolete ar- 

 cuatus , lae vis , glaber, liber, palels Inclusus, qulnque Uneas longus, fuscescenti-stramineus , mo- 

 nospermus. Perlcarpium coriaceum. Semensolltarium, fundo perlcarpii affixum, sessile, locu- 

 lum replens , sed undlque liberum , lineari-oblongum , apice rotundatum , basi acutum , em- 



bryoni paraUele compressiusculum^ apice compressum, dorso convexum et linea longitudinali 



122 



