EXOGENS. 70 EXOGENS. 
CLASS VII. EXOGENS (V. K., p. 235.) 
Amone the numerous Alliances in this Class, the following only dema 
the early attention of the student. They are here distinguished by th 
usual characters, which suffice for the identification of common plants :— 
* Sub-class 1, Diclinous. 
AMENTALS,. Males in catkins. Carpels more than 1, superior, con- 
solidated. Albumen 0, 
URTICALS. Males scattered. Carpels 1 only, superior. 
EUPHORBIALS, Males scattered. Carpels more than 1 (3), superior, 
consolidated. Albumen much. 
MENISPERMALS. Males scattered. Carpels more than 1, superior, 
disunited. 
QUERNALS. Males in catkins. Carpels more than 1, inferior, con- 
solidated. Placentz axile. 
CUCURBITALS. Males scattered. Carpels more than 1, inferior, con- 
solidated. Placentz parietal. . 
Sub-class 2. Hypogynous. 
VIOLALS. Stamens definite, equal. Flowers dichlamydeous. Placer 
parietal. 
(Brassicacee. Stamens definite, tetradynamous ; see Cistals.) 
SAPINDALS, Stamens definite. Flowers dichlamydeous, unsymmé 
in the stamens, Placentz axile. g. 
BERBERALS. Stamens definite. Flowers dichlamydeous, unsymm r 
in the ovary. 
ERICALS. Stamens definite. Flowers dichlamydeous, symme 
Anthers porous, 
RUTALS. Stamens definite, Flowers dichlamydeous, symme 
Anthers slit. Petals flat. 
GERANIALS. Stamens definite, Flowers dichlamydeous, symm: 
_Anthers slit. Petals twisted, 
— - SILENALS. Stamens definite. Flowers monodichlamydeous. C 
more than 1. Placenta free central. 
- CHENOPODALS. Stamens definite. Flowers monochlamydeous. 
ee de Placenta free central. 
_ PIPERALS. Stamens definite. Flowers achlamydeous. 3 
| MALVALS. Stamens 00. Flowers dichlamydeous. Calyx valvate. 
* There are 4 Sub-classes of Exogens. 1. Diclinous, in which the flowers are always unisexual: 
4 in which they are usually hermaphrodite, 2 having the stamens Hypogynous, 3 P 
4 Epigynous. 
