TERMINOLOGY. 18 
3, Withering, (marcescens), that withers after the 
flower, but still remains for some time, and at last 
drops off, as in the apricot, Prunus Armeniaca. 
4. Caducous, (caducum), that falls off before the 
flower, as in the poppy, Papaver somniferum. 
5. Simple, (simplex). 
6. Double, (duplex), when a double perianthium 
encloses the flower, as in the strawberry, Fragaria 
vesca, mallow, Malva rotundifolia, fig. 23, 5'7. 
7. One-leaved, (monophyllum), when the perian- 
thium consists of one leaf, that is, it may be divided 
into equal or unequal laciniz, but all of them are 
connected at the base, fig. 49, 50, 53, 72, 73, 110. 
8. Two, three, four, five-leaved, (di, tri, tetra, 
penta, &c. phyllum, many-leaved, (polyphyllum), when 
it consists of two or more foliola, fig. 148. 
9. Dentated, (dentatum), when it has at the mar- 
sin short segments or indentations, but which are 
not deeper at most than the fourth part of the whole 
perianth. According to the number of these seg- 
ments the perianth 1s, bi, tri, quadri, quinque, &c. 
or multidentatum, with two, three, four, five, or many 
segments. 
10. Cleft, ( fissum), when the perianthium is di- 
vided into laciniz, but which reach only to the 
middle. It is often bi, tri, quadri, &c. multifidum. 
11, Parted, (partitum), when the perianth is di- 
vided down to the base. ‘These divisions are also 
named according to their number, as i, tri, Guadrl 
yon Re esti 
. Labiated or bilabiated. Wesiarie s. bilabiatum), 
W ce the perianth is deeply divided into two lacinie, 
both 
