96 MONOCOTYLEDONER. IMPERATA. 
nulla, palea quam gluma 1I? 3—4-plo breviore. — Hack. in Mart. et 
Eichl. Fl. bras. vol. 2, pars 3, p. 251, t. 59 f. 1; Saecharum Sapé St- 
Hil. Voy. distr. Diam. 1, p. 368 ; Imp. Sapé Anderss. l. c., p. 159 
et I. arundinacea d. americana Anderss. l. c. p. 160 ex. p.; I. cau- 
data Chapm.! Suppl. Fl. South. Stat. p. 668; Syllepis Ruprechtii 
Fourn. 1. c. 
Culmi 30—70 em. alti, graciles, superne longiuscule nudi; vagina 
laxæ, glaberrimse v. innovationum pubescentes, nodis glabris v. 
altero latere barbulatis ; ligula brevissima (1 mm. longa), truncato- 
rotundata, membranacea, glabra, dorso pilis longis stipata. Laminæe 
basi angustata lineari-lanceolatz?e, acuminatis, 10—30 em. longse, 
4—5 mm. latæ, summa abbreviata, flaceidule v. subrigidze, glauco- 
virides, subtus glaberrim&, supra versus basin marginesque longius- 
cule patenti-villosze, ceterum glabrze v. puberulis, leaves excepto mar- 
gine scabro, nervis lateralibus primariis utrinque 3—5, secundariis 
inter hos 5—7-nis tertianisque non prominulis valde confertis per- 
cursæ. Panieula 7—15 em. longa 1,5—2,5 lata, versus apicem obtusius- 
. eulum parum attenuata, densiuscula, rhachi communi gracili praeter 
nodos barbatos glaberrima, ramis primariis solitariis szepius ad basin 
superiusque ramulos secundarios paucos brevissimos edentibus, przeter 
axillas longe barbatas glabris v. parce villosis scabris suberectis subca- 
pillaribus. Racemi primarii 1—1,5 cm. longi, internodiis 4—6 formati, 
secundarii sursum decrescentes, primariis appressi, rhachi capillari 
pareissime lanata; pedicelli 1,5—4 mm. longi gracillimi subclavati, 
scabri et villis ipsis pluries longioribus laxe eiliati. Spicule lineares, 
4 mm. longs, basi subfusc®, superne albe; gluma I“ inferne 
membranacea, apice subhyalina, obtusiuscula, dorso subconvexo a 
basi ad medium usque secus nervos villis glumis duplo longioribus 
densius vestita, apice minute ciliolata, nervis 4, intermediis vix ultra 
medium excurrentibus, exterioribus adhue brevioribus percursa ; 
II^ I^» subsuperans, lineari-lanceolata, membranaceo-hyalina, acu- 
tiuscula v. obtusiuscula v. lacinulata, subcarinata, carinà nervisque 
2 lateralibus villis ipsa duplo longioribus a basi ad medium usque 
lanata, ceterum glaberrima v. apice minute ciliolata, 3—5-nervis, 
nervo medio ad glumæ medium, lateralibus vix ad '/, procurrentibus ; 
HIP quam He '/, brevior, ovata, acuta v. obtusa, ssepe lacinulata, 
hyalina, enervis, glabra. Palea' spe laeinulata, hyalina, enervis, 
' Paleam (nec glumam IV?) hanc esse ex eo elucet quod medio dorso 
glumam Iam et Imam nec (ut gluma IV? deberet) IId2m respicit. 
