ay sometimes be noticeable. It may be

_Plicate_ or _Plaited_, that is, folded lengthwise; and the plaits may
either be turned outwards, forming projecting ridges, as in the corolla
of Campanula; or turned inwards, as in that of Gentian Belladonna; or

_Supervolute_, when the plaits are convolutely wrapped round each other,
as in the corolla of Morning Glory and of Stramonium, Fig. 282.

[Illustration: Fig. 282. Upper part of corolla of Datura Stramonium in
the bud; and below a section showing the convolution of the plaits.]

Section IX. STAMENS IN PARTICULAR.

281. =Androecium= is a technical name for the staminate system of a
flower (that is, for the stamens taken together), which it is sometimes
convenient to use. The preceding section has dealt with modifications of
the flower pertaining mainly to calyx and corolla. Those relating to the
stamens are now to be indicated. First as to

282. Insertion, or place of attachment. The stamens usually go with the
petals. Not rarely they are at base

_Epipetalous_, that is, inserted on (or adnate to) the corolla, as in
Fig. 283. When free from the corolla, they may be

[Illustration: Fig. 283. Corolla of Morning Glory laid open, to show the
five stamens inserted on it, near the base.]

_Hypogynous_, inserted on the receptacle under the pistil or gynoecium.

_Perigynous_, inserted on the calyx, that is, with the lower part of
filament adnate to the calyx-tube.

_Epigynous_, borne apparently on the top of the ovary; all which is
explained in Fig. 270-274.

[Illustration: Fig. 284. Style of a Lady's Slipper (Cypripedium), and
stamens united with it; _a_, _a_, the anthers of the two good stamens;
_st_, an abortive stamen, what should be its anther changed into a
petal-like body; _stig_, the stigma.]

_Gynandrous_ is another term relating to insertion of rarer occurrence,
that is, where the stamens are inserted on (in other words, adnate to)
the style, as in Lady's Slipper (Fig. 284), and in the Orchis family
generally.

283. =In Relation to each Other=, stamens are more commonly

_Distinct_, that is, without any union with each other. But when united,
the following technical terms of long use indicate their modes of mutual
connection:--

_Monadelphous_ (from two Greek words, meaning "in one brotherhood"),
when united by their filaments into one set, usually into a ring or cup
below, or into a tube, as in the Mallow Family (Fig. 286), the
Passion-flower (