2088 AN INTRODUCTION 
Liriodendron, Armeniaca, Perfica, Padus, and 
others. 
BRACTEA, a floral Leaf, is fo called 
when it differs in Shape and Colour from 
the reft; asin Ti/a, Fumaria bulbofa, Stoechas, 
and Horminum. 
SPINA, a Thorn, is a kind of fharp 
Weapon or Armature, protruded from the 
Wood of the Plant ; asin Prunus, Rham- 
nus, Hippophaé, Celafirus and Lycium: It 
will often difappear by Culture; as in 
Pyrus. 
ACULEUS, a Prickle, isthe fame Sort 
of Armature, proceeding from the Cortex 
of the Plant only; as in Ro/2, Rubus, 
Rides, and Berberis. 
CIRRAUS, a Clafper, or Tendril, is a 
filiform fpiral Band, by which a Plant faf- 
tens itfelf to any other Body; as in Vitis, 
Bannifteria, Cardiofpermum, Pifum,and Big- 
nonia. 
GLANDULA, a little Gland, isa kind 
of Pap or Teat, ferving for the Excretion 
of fome Humour: Its Situation is common- 
ly on the Petioles, the Serratures of the 
Leaves, or the tender Stipulz. 
PILUS, a Hair ; isa fort of Briftle, ferv- 
ing as an excretory Duc to the Plants. 
CHAP. 
