OUTLINES OF BOTANY. XLIX 
are much inflexed, the aestivation is at the same time ee: invo- 
lute, if the margins ps rolled inwards; isnt if ~ margins project 
outwards into salient angles; revolute, if th Heer e rolled outwards; 
plicate, if the petals are folded i n Tongitadina plaits 
the w is 8 y some of the 
petals being outside the hele or rg sa their Sroniapanis ch other at 
least -petaled imbricate corol e quincuncially 
imbri e petal is outside, a adjoining one wholly inside, 
the three others intermediate and overlapping on one side; bilabiate, when 
two adjoining ones are inside or outside the three others. Imbricate 
aes are described as crumpled (corrugate) when puckered irregularly in 
e bud. 
twisted, contorted, or convolute, when each petal overlaps an adjoining 
ide, and is overlapped by the other adjoining one on 
the 
the rics gpa is variable, even in the same species, but, in general, it 
ppli onstant character in species, in genera, or even in Natural 
104. ig general ar es the Corolla ij 
tubular, when the whole or the pckes part of it is in the form of 
inder. 
campanulate, when approaching in some measure the shape of a cup 
or be = 
urceolate, when the tube is bsg 2 or nearly pedal contracted at 
an 
se, or nearl 
hypocrateriform or salver-shaped, when the ie er vet is cai 
and the upper portion expanded horizontally. In this e the e of 
tube is restricted to the cylindrica part, and the origpntal soni is 
called the limb, whether it be divided to the base or not. The orifice of 
e tube is called its mouth or throat. 
Be Beier hee or funne eet: when the tube is Re A at the 
ed at the top into a more or less campanulate limb, of 
which he he. often spread horizontally. In this case the aa patiiiats 
part, up to the commencement of the lobes, is sometimes éontidered as 
a i i i imb, and 
as a po e 
botanists again described as independent of either, under the name of 
throat Lrg ‘General speaking, however, in campanulate, infundi- 
bulif ep 
a 
separate, or at the part where the corolla first expands, according to 
which is the most marked. 
105. Irregular abe gree have received various names according to the 
more <n orms they have been compared to. Some of the most 
important are the 
bilabint, or two-lipped corolla, when, in a four- or five-lobed corolla, 
the two or three upper lobes stand obviou usly apart, like an upper lip, 
from big rg r three lower ones or under lip. In Orchideae and some 
Hillebrand, fait of the Hawaiian Islands. 
