THE STRUCTURE OF PLANTS. po. 
and stigma being * essential portions, the style may be, and frequently 
_ is, wanting, when the stigma is sessile. e ovary contains within 
the rudiments of a or Ovule 8s, Which are, after they oe received the 
esting influence of me pollen which is communicated through the 
veloped into seeds. ‘The number of pistils in aoe ower is pi 
pres ssed by prefixing the eck poy HE Yynous ; & monogynous 
ving one pistil; a digynous one having ask pistils, ke. For farther 
in s alatien to _- structure of the pistil, see 45. 
38. The stam pistils being the essential parts of the flower, 
= pe both poled aot i. floral envelo opes may be wanting : when one of. 
bse oe is the corolla, and the flower is then apetalous 
(vith petal) en both are absent, the flowe 
omplete flower F nes all four series of organs prese ait either of 
these fe cree ale is then ris Se An omer a may pro- 
duc : ¢ both stamens and pistils, and a ones re these are 
both bi ant, ge Hee is . fet. If either of these is absent, the flower 
is imperfe:t. These organs are frequently produced in separate flowers 
(Figs. 69 and 70): when the staminate aud istillate flowers are both 
borne on the same plant, they are sai monecious (i. €. in one 
erage es ee “A produced on different Beles greg ie pets house- 
holds). Wh me of the flowers are perfect and the o ted, 
they are 2 Spillet sa having. the different dhs ee ne with 
the same number of n each, are symmetrical ; those having the 
paris in ag series of t pa shape, a regular ; or of different vate: 
oduced 
Rinse ries of parts. Some parts ee man bs 
growing together of series. ‘“ 
It is very common to find the sepals of a calyx or the petals of 
a corolla more or less joined by their contiguous edges so as to forma 
tube. When the sepals are distinct, the calyx is polysepalous; and — 
where united, monosepalous. Lid ere the union is on! ly petal and the — 
ue sepals sa meti ‘that 
more or less poco monope Bt ‘gam wie ll : 
cor rts are ey band for their whole I length the 
free teem on is the ower paleay ‘ube. 
Yt roll iygcahtacs 
uel shaped ot onfundibulform, when -Darrower 
il at os bs pormad at ee oe aa tae “ig a shpat or 
aE 
sage aia sip ea geoage r less igi 
p een ae eased 
or rotate, with a b eon ab 08 
