EXPLANATIONS AND ABBREVIATIONS. 
IX 
Poa annua L., Holcus lanatus L., Lycopodium denticulatum 
L., Polypodium vidgare L., Pteris aquilina L., Davallia cana- 
riensis L., &c. 
Nature and Duration. 
Herb Herbaceous. 
Shr Shrub. 
Suflr Do. under a foot high. 
Tr Tree. 
Ann Annual. 
Bien Biennial. 
Per Perennial. 
Seasons. 
Spr Spring, i. e. Nov. Dec. Jan. Febr. Mar. Apr. May. 
Sum. . . Summer, i. e. June, July, Aug. 
Aut. . . Autumn, i. e. Sept. Oct. Nov. Dec. 
Terms of Description. 
ach achsenia. 
anth anthers. 
br bracts. 
caps capsule. 
carp carpels. 
cor corolla. 
fil filaments. 
fl flower. 
fr fruit. 
ft feet. 
in inches. 
inv involucre. 
L. 1 leaves. 
lfts leaflets. 
1. c loco citato ; 
i. e. in the 
place last 
quoted. 
ov 
ovul. . . , 
pan. . . 
ped. . . , 
pedic. . . 
pet. . . , 
P 1 
rac 
recept. , 
sds 
segrn. . . 
sep. . . , 
sepals. 
S P 
spec. . . 
st 
stam. . . 
stip. . . 
stipules. 
var. . . . 
\ variety. 
Pubescence. 
1. Hairs soft . 
pubescent . . downy with short fine hairs, 
puberulous . . downy in lowest degree. 
pilose haiiy, with long distinct hairs. 
villous hairy, with copious long close-set hairs. 
lanuginous . . woolly, 
tomentose . . cottony. 
