i64 > PRINCIPLES OF BOTANY, ETC. 
number of species, so that it becomes necessary to 
subdivide them; but where it is possible this ought 
to be avoided. 
The essential and artificial character must be in- 
cluded in the natural; when this is not the case 
some of them must be Abeta 
Keeping our former example of the Solanum, we 
shall, in technical language, exhibit its characters. 
SOLANUM. 
CaLyx, perianthium monophyllum, quinquefi- 
dum, erectum, acutum, persistens. 
CorRoLLA, monopetala rotata. Tubus brevissi- 
mus, Limbus magnus quingucidus,. reflexo- Lin 
plicatus. 
STAMINA, filamenta quinque, subulata, minima. 
Antherze oblonge, conniventes, uae apice 
poris duobus dehiscentes. 
PistiLnLuMm, germen subrotundum. Stylus fill- 
formis staminibus Iongior. Stigma obtusum. 
Prricarpium, bacca subrotunda, glabra, apice 
punctato-notata, bilocularis. Receptaculo utrinque 
convexo carnoso. 
Semina plurima subrotunda, nidulantia. 
The above extended description. is called) a na- 
tural character, and is taken from the plant: any 
varieties of species are generally described sepa- 
rately. When we compare this natural! character 
ofthe Solanum, with others of the same class. and 
order, particularly with the allied genera, of Caps 
sicum, Physalis, &c. Hie following discriminating 
character arises ; 
SOLA: 
