KEY TO SUB-CLASSES, ORDERS AND GENERA. 125 
COROLLIFLORA:—cont, 
with milky or coloured juice, and either with a hairy ring 
of scales hiding the stamens (Thevetia, Cerbera, Plumeria), 
or a small ring of scales opposite and close to the stamens 
(Uttleria):— 
(*} Stamens 2, alternate with the carpels ; corolla lobes 4—-5 or 
more, imbricate ur valvate ; ovary 2-locular, each cham- 
ber 2-(rarely L-, or 4-) ovaled ; leaves exstipulate :— 
LXXII—OLeEacex. 
(**) Stamens 4 or more, alternate with the corolla lobes :— 
(+) Corolla lobes or free petals, and stamens, 4, segments of 
corolla imbricate; ovary l-locular and l-ovuled, or 2- 
locular with each chamber 2-ovuled ; rudimentary sti- 
pules (sometimes as thorns) usually present :— 
LXXITI—Satvaporace#, 
(+t) Corolla lobes or free petals 5 (rareiy many), or if 4 (LoGanrace#, 
sometimes), then the chambers of the 2-(rarely 1-) locular 
ovary many-ovuled :— 
(§) Carpels free with only the styles united, or if carpels united 
(APOCYNACE®, sometimes), then the corolla with lobes con- 
torted and twisted to the left; style more or less enlarged 
towards the top with the stigmatic surface below the 
tip; stamens and corolla lobes always 5; juice milky or 
coloured :— 
({\) Pollengranular; stigma annular, or interrupted below the 
smooth non-stigmatic, entire or 2-fid, tip of style; fruit 
baccate or drupaceous, or of 2 free (rarely united) folli- 
cles; ovules usually many (sometimes 1—6) in each 
chamber ; stipules O (rarely interpetiolar glands or hori- 
zontal lines):— ... a aE LXXIV—ApocyNnacE®. 
(|||) Pollen aggregated in solitary or paired masses (pollinia) 
in each another cell; apex of style flattened into a 
plane or beaked disk with stigmatic border bearing 5 
glands (corpuscles) to which the pollinia are attached 
in pairs or in fours; stipules always O; fruit usually 
of 2 free’follicles:— ... a ... LXXV—AscLePIADACE®. 
(§§) Carpels as well as the style always united, stigma terminal ; 
corolla lobes imbricate or valvate, or if contorted (Fagrea), 
then twisted to the right and corolla long tubular; corolla- 
lobes and stamens 4—-5; leaves joined at their bases by 
interpetiolar stipules or raisedjhorizontal stipulary lines :— 
LXXVI—Locaniacez. 
(Rf) Leaves alternate or if opposite (PoLEMoNIACEx, sometimes), 
then the pistil 3-merous; carpels never free; stamens never 
hidden by a ring of scales :— 
(*) Carpels 3, and ovary 3-locular; styles simple, shortly 3-fid ; 
corolla lobes contorted ; ovules in each loculus few, attached 
to inner angle of each loculus ; capsule loculicidally dehis- 
cent:— ... — ... ane sae .. LXXVII—PoLemoniacez. 
(**) Carpels 2, or if 3—5 (CoNvOLYULACEX, sometimes) then with 
corolla plicate and ovulesin each loculus 1—4 erect from 
the base of the loculus :— : 
{t) Ovules in each carpel numerons, and ovary 2-locular; corolla 
lobes plicate, or if (rarely) imbricate, then the style 
entire :— “ec aad “rr sae zs LXXX—SoLANACE. 
(++) Ovules in each carpel 2 (less often 1, rarely 4) :— 
(§) Corolla lobes imbricate or contorted ; ovary 2-locular, loculi 
2-ovuled (or spuriously 4-locular with 1 oynle in each 
loculus) ; fruit of two 1—2 seeded pyrenes or four 1-seeded 
nutlets indehiscent) ; embryo with radicle superior :— 
LXXVIITI—Boracinacez, 
(§§) Corolla lobes plicate, rarely (Cressa, Cuscuta) imbricate, and 
then fruit a valvular or circumscissile capsule; ovary 2- 
(rarely 3—5-) locular; fruit usually dehiscent, (except 
