SYNOPSIS OF THE GENERA. 
calyx, a five cleft corolla, and stamens in three§ parcels. 
Fertile flowers. Calyx five toothed. Corolla five cleft. 
Style three cleft. Fruzt an inferior berry, globose. Seeds 
small, ovate, compressed, more or less bordered.—Long 
climbing herbaceous plants, with simple or cleft tendrils. 
(See Fagus and Quercus in OrpER Potyanpria. Afroplex in 
; C1iass PoLyGAMIA, 
Orper VI. Hexanpr1a.—6 Stamens. 
16. Ertocau'ton, [Page 1200.] Flowers collected into a com- 
pact scaly head, each scale single flowered, except the 
outer ones, which are barren, and forming an involucre. 
Barren flowers in the centre. Pertanth single, unequally 
four to six cleft. Stamens four to six. Fertile flowers in 
the ray. Perianth single, deeply four partite. Style one. 
Stigmas two or three. Capsules two or three lobed, two 
or three celled, each cell single seeded. 
(See Quercus in ORDER PoLYANDRIA). 
OrpER VII. PotyanpR1a.—Many Stamens. 
* Flowers with a single perianth, or wanting, not in catkins. 
17. CeRatTopHyt'tum, [Page 1201.| Barren flowers with an 
inferior many partite perianth. Stamens sixteen to 
twenty. Fertile flowers with a many partite perianthe 
Ovarium superior. Style filiform, curved, simple. Fruit 
a one celled nwé, with a pendulous seed.—Floating herbs, 
with leaves numerously divided into hair-like segments. 
18. A'rum, [Page 1202.] Spatha of one leaf, convolute at the 
base, and enclosing a spadix. Spadix with the ovaries 
inserted at the base, about the middle numerous rows of 
sessile anthers, and above it is naked. Fruit a berry, 
one celled, many seeded. 
19. Pore'rtum, [Page 1204.] Flowers collected into dense 
heads, with three or four scaly bracteas at the base of 
: each. Barren flowers with a four cleft perianth. Sta- 
mens thirty to forty, with long slender filaments. Fertile 
flowers with a tubular perianth, contracted at the mouth 
with four deciduous teeth. Styles two, filiform. -Stigmas 
tufted. Frutét two, one seeded. Nuts invested with the 
VOL. III. E 
