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CLASSIFICATIONS OF ORDERS AND GENERA. 
XIX. Syngenesia . . Anthers united, but filaments free. 
XX. Gynandria . . Stamens and style consolidated. 
2. Stamens and pistils usually in different flowers. 
XXI. Moncecia . . . Male and female flowers on one plant. 
XXII. Dicecia .... Male and female flowers on different plants. 
XXIII. Polygamia . . Male and female flowers separate or together, and 
flowers sometimes hermaphrodite. 
XXIV. Cryptogamia . Fructification concealed. 
CLASS I. MONANDRIA. 
Tufted herb. Leaves opposite, subulate Scleranthus, p. 234. 
Water herb. Leaves opposite Callitriche, p. 68. 
Leafless, fleshy, jointed, seaside herb Salicornia, p. 233. 
Small alpiue herb. Leaves subulate, alternate Alepyrum, p. 295. 
Minute, floating, green, scale-like fronds Lemna, p. 277. 
Prostrate herbs. Leaves pinnate. Flowers in a globose head . Acaina, p. 55. 
Besides the above, Orchidece (see XX.) are usually monandrous, but the anther is adnate to 
the style, and a few Cyperacece and species of Chenopodium have sometimes but one stamen. 
CLASS II. DIANDRIA. 
§ Perianth inferior, double. 
Ovary 1-celled. Flowers irregular Utricularia, p. 222. 
Ovary 2-celled. Flowers regular or irregular .... Scrophularinea:, p. 200. 
§§ Perianth inferior, single. 
Trees. Leaves opposite Olea, p. 186. 
Shrubs; bark tough. Leaves alternate Pimelea, p. 242. 
Tufted herbs. Leaves subulate Gaimardia, p. 295. 
Erect herbs. Leaves alternate or opposite Chenopodium, p. 229. 
Prostrate herbs. Leaves pinnate. Flowers capitate . . . AC/Ena, p. 55. 
§§§ Perianth 0. Herb. Leaves alternate Peperomia, p. 254. 
Perianth 0. Shrub, aromatic. Leaves alternate . . . Piper, p. 254. 
Perianth superior. 
Tufted herb. Leaves imbricate. Flowers solitary . . . Donatia, p. 58. 
Prostrate herbs. Leaves pinnate. Flowers capitate . . . Ac.ena, p.55. 
Herb. Leaves simple, radical. Flowers spiked or panicled Gunnera, p. 67. 
(See Lemna and Salicornia in I., Forstera and Helophyllunt in XX.) 
CLASS III. TRIANDRIA.. 
§ 1 . Flowers in spikelets. Perianth incomplete or 0. — Grasses, 
sedges, etc. Leaves sheathing 
Stem terete, hollow. Sheaths split to the base. Anthers 2- 
celled, versatile Gramineai, p. 317. 
Stem solid, often 3-gonous. Sheaths not split. Anthers 2- 
celled, adnate CYperacea:, p. 296. 
Stem solid, terete. Sheaths eutii’e. Anthers 1-celled . . Restiacea:, p. 293. 
§ 2. Flowers in globose, peduncled heads. Leaves pinnate . . Ac-ena, p. 55. 
§ 3. Flowers not in spikelets nor heads. Perianth single. 
Herbs. Perianth superior, of 6 spreading pieces .... Libertia, p. 274. 
Tree. Perianth superior. Calyx-limb 5-9-lobed . . . Mervta, p. 104. 
Herbs. Perianth inferior, of 5 green leaflets Chenopodium, p. 229. 
§ 4. Flowers various. Perianth double. 
Herb. Leaves opposite. Sepals and petals 3 or 4, inferior Elatine, p. 28. 
Herb. Leaves opposite. Sepals 2. Petals 5, inferior . . Montia, p. 27. 
Herb. Leaves linear, imbricate. Stamens 2 or 3, epigynous Donatia, p. 58. 
Herbs. Leaves radical. Stamens 2 or 3, epigynous . . Gunnera, p. 67. 
