218 MONOCOTYLEDONEA. ISCHJEMUM, 
Rhizoma longe repens. Culmi ascendentes, firmuli, parte erecta 
1—2-nodes, compressi, simplices, apice breviter nudi, haud incrassati. 
Vagin® subcompresse, carinatz, laxe, glaberrim&, nodis saltem 
superioribus puberulis, summa subventricosa laminam brevissimam 
ferens, inferiores dense aggregate internodia multo longiores. Ligula 
brevis, truncata, membranacea, glabra v. ciliata. Laminæ sublanceo- 
. lato-lineares, breviter acuminat®, 3—8 em. longs, 4—6 cm. lat, 
obscure virides, glabrze, excepto margine scaberulo la ves. Racemi 
2—4 em. longi, alter pedicello 4—5 mm. longo fultus, ex alutaceo et 
rufescente variegati, glabrescentes ; articuli pedicellique spicula ses- 
sili duplo breviores, angulo exteriore glabri v. pilis parcis brevibus 
rigidulis obsiti, interioribus pilis albis patentibus mollibus crispulis 
eiliati, pedicelli angulo interiore recti. Spicule sessiles cum callo 
1,5—1,8 mm. longo oblongo 6—7 mm. long& ; gluma I": acutiuscula, 
plus minus bidentula, carinis scaberrima, superne elevato-4—5-nervis 
scaberula, inferne enervis glaberrima sspe rubro-punctulata ; IH: 
lanceolata, glabra ; IV* lanceolata, bidentula v. ad '/, usque bifida, 
aristam imperfectam glumas non v. parum superantes exserens. Spi- 
culæ pedicellatze elliptico-lanceolatz gluma I": acuta, scabra v. ciliata, 
carina exalata, IV* brevissime mucronata. 
Brasilia mer. in prov. S. Paulo (Burchell 3251), in ins. S. Catha- 
rina (d’Urville) ; pr. Montevideo (Balansa, Arechavaleta). Sec. Presl 
a Hzenkeo in ins. Philippinis lectum, sed statio (ut in multis aliis) pro- 
babiliter commutata. 
Obs. Spodiopogon ischemoides W. Hook. et W. Arn. in Beechy's 
Voy. p. 274, ex insula Bonin ortus, ad Ischem. minus Presl cum? 
relatus, nimis breviter descriptus, cum hoc congruere videtur excepta 
arista spicula fere duplo longiore. Adhuc dubius. 
tt Spicule et sessiles et pedicellatze longe denseque villosz. 
14. I. eriostaehyum. Perenne, innovationibus extravaginali- 
bus. Culmi ascendentes, 30—50 cm. alti, robusti, teretiusculi, inferne 
densius foliati, simplices, superne plus minus longe nudi et subincras- 
sati. Vaginze teretiuscule, laxe, nodis longe barbatis, appresse vil- 
los, inferiores internodia superantes, superiores iis breviores, summa 
subinflata laminam brevissimam v. mucroniformem gerens. Ligula 
1—2 mm. longa, IRERTERBEAOB: truncata; dorso pilosa: Laminæ e 
basi parum angustata i in to-lineares, 
acuminata, $145 em. longs, 5—8 mm. lat, rigidze, obscure virides, 
