A LIST OF THE ABBREVIATIONS AND SIGNS USED. 
Cult. Culture and propagation. 
Clt. Cultivated since. 
Fl. Flowering. 
Tr. Tree. 
Sh. Shrub. 
Pl. Plant. 
Var. Variety. 
cl. climbing. 
tw. twining. 
ft. foot or feet. 
fi. floating on water. 
tr. or trail. trailing. 
pr. procumbent. 
Lin, syst. Linnzean system. 
Hort. or Hortul. signifying of the gardens or of 
gardeners, 
Sect. Section, a division of species. 
v. s. herb. Lamb. 
tian herbarium. 
See Specimen in the Lamber- 
l. c. in loco citato, signifying in the place or work 
cited above. 
D. Dry, succulent plants requiring a dry atmosphere. 
S. Stove or hothouse. 
G. Greenhouse. 
F. Frame. 
H. Hardy. 
W. Aquatic. 
B. Bog. 
h. Tree or shrub. 
yu. Perennial herbaceous. 
¢. Biennial. 
©. Annual. 
u. Climber. 
AO. 'Twiner. 
+ Doubtful, not ascertained. 
?. Expresses a doubt. 
§ Indicating subsections or divisions of orders, genera, and 
species. 
* Stars indicate divisions of species founded on slight cha~ 
racters. 
