XLVIII OUTLINES OF BOTANY, 
§ 9. The Calyx and Corolla, or Perianth. 
he Calyx (90) is usually green, — smaller than the — 
sometimes very minute, rudimentary, or sap sometimes very in 
tinetly whorled, or not whorled at all, or < yhorls, or composed of 
a large number of sepals, of which the cg ones pass scadealy, into 
bracts, and the inset ones into petals. 
97. The Corolla (90) is usually eteeced and of a more delicate texture 
~~ the calyx, and in popular language is often more speciall mean 
on 
a so-called ere Lag ass (15) (of which the 
ce are xo ie sailed leaves or eo ies ich the sepals and 
petals are similar in form and texture, pas ‘present oe ntly a single 
whorl. But if ne thaaihaatag in ri young bud e half of the parts will 
generally be found to be placed ‘outside the an half, and there will 
frequently be some slight difference in texture, size, an colour, anne 
to the close observer the presence of both ban alyx and corolla. Hene uch 
discrepancy in descriptive works. ere one botanist Seatitties a prce 
rianth of six segments, another will sede of a double perianth of three 
abate and three petals. 
99. The following terms and prefixes, pha at y of the modifications of 
form and arrangement of the corolla and it 8 petals, are equally apiieable 
ae ; : 
a long usage, are not strictly correct, for monopetalous (consisting of a 
single petal) should apply rather to a corolla really reduced to i 
petal, which would then be on one Pot of the axis; and potppatnns is 
sometimes used ashi appropriately for a corolla — an indefinite nu sion 
of petals. Som ern botanists ae therefore, proposed the 
ar nr a seid for the corolla with united petals, wank dialypetalous for that 
h free ri but the old-established expressions are still the most 
of the pated are called the teeth, lobes, or segments (39), according as roe 
are short or long in proportion to the whole length of the corolla. When 
the tube i 8 excessively short, the petals appear at first sight free, but 
a wei heaps at the ba ase must be carefully attended to, being 0 of 
ion. 
em The tion of a corolla bes = arrangement of the 
petals, or 
of such portion of them as is free ree, he unexpanded vrs It 
valvate, when they are lakh sa led in their whole length, their 
edges being placed against each other without oreciapping. If the edges 
