Gramiseae. TRACHiPOQOBr. 347 



7- TRACHYPOGON SCROBICULATUS. t 



Tr. culmo ramoso nodis glabrls foliis glabris , vaginis 

 ore barbatis , spicis fasciculato -paniculatis bracteatis , rha- 

 chi spiculaque fertili sessili hirtis , glumis spiculae neutrius 

 maximis dorso medio glanduloso - scrobiculatis. 



Radix repens, contorta , crassiuscula, iibrls descendenti- 

 bus plurimis validis fibroso-ramificatis pallidis. Culmus tri- 

 sexpedalis, pcnna cygnea crassior, erectus , strlctus, teres, 

 post ramificationem altero latere explanatus vel canaliculatus, 

 glaber, lacvls , farctus ;, plurlnodis nodis fuscis glabrls , ra- 

 mosus , ramls appressis. Yaglnae , sl inferlores aliquot exci- 

 pis , internodiis breviores, convolutae , striatae, glabrae, 

 niarglnes versus punctis glandulosls elevatis disco excavatis 

 adspersae , ad latera lamlnae pills longls albis barbatae. Ter- 

 minales ramorum , ubl hl fasclculatim solvuntur , approxi- 

 matae, laxae , lanceolatae, subventricosae , compressluscu- 

 lae, sursum dlvergejites , carina et margine glandulosae. Li- 

 gulaexserta, membranacea , rotundala , lacera. Folla Infe- 

 riora pedalla etlonglora, 3 — 4 Hneas lata, superiora ramo- 

 rumque 3 — i f pollices longa, angusta, omnia patula linea- 

 ria , subtillssime acumlnata , plana, striata, utrinque scabra, 

 marglne serrulato - scabra , nervo carlnali valido pallido di- 

 vlsa , rlgldula, laete vlridla , basl macula fusca notata. Rami 

 pedales vel semipedales , subsolltaril , semiteretes , basi nudi 

 simpllces vaglnaque folll niaximam partem tectl , aplce in ias- 

 ciculum proliferura ramulorum vel pedunculorum subfastigla- 

 torum solutl. Pedunculi 3 — 4 pollicares, compressl, basi 

 spathellls lineari-lanceolatis membranaceis fuscescentibus in- 

 terstlncti , apicem versus hlrsuli, infra medlum nodo prae- 

 dili ibidemque recurvi , ex quo nodulo Aagina orltur lanceo- 

 lata , setaceo - acuminata, carinato - compllcata , convoluta, 

 splcam amplectens eaque (demtis arislis) duplo saepe longlor, 

 apbylla, carina glanduloso - scrobiculata , margine membra- 

 nacea. Splcae solltariae, sim])lices. Rhachis vix pollicaris, 

 compressa, artlculata, ferrugineo -hirsuta. Spiculae gemi- 

 natae, indjrlcatae, dissimiles. Altera sessilis , hemlgamo- 

 hermaphrodita , billnearis , lanceolata, conipressa. Glumae 

 chai'taceae : inferior ovata, iruncata , obsoletisslme nervoso- 

 striata , tota ferruglneo-hirta, amplectens alteram lanceola- 

 tam truncatam marglne membranaceam complicatam dorso 

 ferruglneo-hirtam marginlbus ciliolatam. Flosculus inferior 

 neuter , univalvis, valvula hyalina lineari -lanceolata acuta 

 cillata enervi gluma inferiori terlia parte breviori; ilosculus 

 superior hermaphroditus , unlvalvis ^, valvula lincari - angusta 

 tenui mox abeunte in aristam validara quatuor pollices loii- 

 gam fuscescentcm compressam , basin tcisus contortam aU 



