56 NATURAL ORDERS AND 
GENERA 
Flowers perfect, with stamens and pistils, . 
Stamens ONE OF twWO wreseecssecseeerseeserse SALICORNIA, V. 1. p. 1. | 
Stamens five, rarely three or four. 
Perianth scales furnished with ap- 
pendages at the back ............ SALSOLA, Vv. 1. p. 428. 
Perianth scale’ without appendages 
at the back. 
Fruit loose in the closed perianth Curnoropioy, v. 1. p. 418. 
Fruit adhering to the base of the 
PETIADEN «22 .cccecscssccccecscssvecsese Beta, v. 1. p. 427. 
Flowers polygamous or moncecious, 
female perianth two-partite ......s0.«0. ATRIPLEX, V. 3. p. 1297. 
ORDER LXXI. POLYGONEZ.—Juss. 
Perianth single, persistent, inferior, deeply divided, imbricated in 
estivation. Stamens definite, inserted into the base of the perianth. 
Anthers two celled, bursting lengthwise. Ovary superior. Styles or 
stigmas numerous, fruit usually a triangular nut, one seeded, 
naked, or more or less covered by the perianth. Seeds with farina- 
ceous albumen. Limbryo generally lateral, sometimes central, often 
curved. ftadicle distant from the hilum.— Herbaceous plants, rarely 
shrubs. Leaves alternate with stipules, forming a sheath round the 
stem in the form of an ochrea, when young rolled backwards, Flowers 
occasionally unisexual, often in racemes. 
GENERA. 
Perianth four parted.........s0cescsesecseeeeee OXYRIA, V. 2. p. 517. 
Perianth five parted .....sssceccessssesseseeees POLYGONUM, V. 2. p. 568. 
Perianth six parted ....ccccccccccssssccescsees HUMEX, V. 2. p. 918. 
ORDER LXXII. ELZAGNEA.—Browy. 
Flowers dicecious, rarely perfect. Male flowers with a single four- 
partite perianth. Stamens three, four or eight, sessile. Anthers two 
celled. Female flowers with a single tubular inferior perianth, per- 
sistent, the limb entire, or two to four toothed. Ovary superior, 
simple, one celled, containing a solitary ascending stalked ovule. 
Style very short. Stigma simple, subulate, glandular. Fruit crus- 
taceous, covered with the perianth, becoming succulent. Seed erect. 
Embryo straight, surrounded by very thin fleshy albumen. Radicle 
short, inferior. Cotyledons fleshy — Trees or shrubs, with entire ex- 
stipulate leaves. Flowers axillary, often fragrant. 
GENERA. 
Barren flowers amentaceous, tetrandrous, Hirrorwag, v. 8. p. 1280. 
