& GRAMINEAE, (95) 54 
PENNISETUM, ich. in Pers, $yn. t. p. 72. 
Gluma biflora, bivalvis, inaequalis, valvula exteriori aliquo- 
ties minori, J/osculi dissimiles: exterior masculus v. 
neuter, r—2-valvis, valvula exteriori textura glumae; 
interior bivalvis, chartaceus, hermaphroditus, | Squamulae 
2 hypogynae. Stamina 5. Styli 2, basi quandoque con- 
naü. jStgmata plumosa. Semen perianthio subindurato 
tectum, Spica (simplex v. divisa) /nvolucellis 1—5-floris, 
polysetis, setis distinctis; nunc dimidiatis. 
ss, Huc pertinent Panicum viride, verticillatum , helvo- 
lum. - um 
A Panico differt tantummodo involucellis setosis, a Cenchro 
lisdem distinctis nec. circa. semen induratis, praesentia. 
squamularum hypogynarum? stylisque saepe distinctis, 
ln Pennisetis quibusdam Richardi squamulae hypogynae - 
forsan nujlae. ^ : 
1, P. compressum , spica eylindracea simplici: rhachi pube- 
scente, involucellis unifloris elongatis completis, floribus. 
lanceolato-subulatis, floseulo hermaphrodito laevi, stylis 
basi connatis, foliis canaliculatis vaginisque glabris, cul- 
mo compresso. (Ll). v. v 
2. P, glaucum , spica cylindracea simplici, involucellis dimi- | 
^^. diatis polysetis subunifloris flore ovato 2—5-plo longiori- 
bus, .flosculo hermaphrodito rugoso, stylis. distinctis, 
foliis planis pilosiusculis: collo sericeo barbato » culmo 
- ^ ramoso, (LI. T) ». s. "— 
anicum glaucum, Z.- 
3. P. italicum , spica cylindracea composita, involucellis di- 
— midiatis unifloris flore ovato 2—5-plo longioribus, foliis 
.— planis lato-linearibus marginatis scaberrimis, vaginis lae- 
vibus: eollo barbato pilis strictis. (T.) B. v. s. 
. Panicum italicum, | L, AM 
 CENCHRUS. Z. 
Gluma. biflora, bivalvis, valvula exteriori minori.  Flosculi 
dissimiles: exterior masculus v. neuter; interior herma- 
 phroditus. Sguamulae nullae hypogynae. Styli 2, inferne 
,Connati, Stigmata plumosa,  Znvolucellum  1—5-florum, 
multipartitum, extus setosum , fructiferum induratum, 
1. C. inflexus, involucris unifloris profunde 6—7-fidis: laci- 
. . mus angusto-lanceolatis margine nudis: fructiferis inflexis, 
Spica simplici cylindracea, (T.) v. v, 
» 
