CLASSES, ORDERS, AND GENERA. 
XXXIX 
Class XXL MONCECIA. 1 Stamens and pistils in separate flowers 
on the same plant. 
Order I. Monandria. 1 stamen. 
1. Euphorbia. Involucre of 1 piece, including several barren 
flowers and 1 fertile. Perianth none, or a very minute one 
to the fertile flower. Germen 3-lobed. Styles 3, bifid. Caps. 
3 seeded, p. 383. 
2. Callitriche. Bracteas 2 or none. Perianth none. Germen 
solitary, 4-lobed, indehiscent, with 4 1-seeded cells. Styles 
2, simple, p. 387. 
3. Zannichellia. Involucre, spatha, and spadix none. Perianth 
of barren fl. none ; of fertile single, of 1 leaf. Gcrmens 4 or 
more, each with 1 undivided style, p. 485. 
4. Zostera. Perianth none. Stamens and pistils inserted alter- 
nately in 2 rows upon one side of a thin flat spadix inclosed 
within a foliaceous spatha. Anthers sessile. Style bifid. 
Fruit dry. p. 486. 
5. Arum. Perianth none. Stamens inserted about the middle, 
pistils on the lower part of a thick cylindrical spadix which is 
enveloped by a spatha convolute at the base. Fruit fleshy , 1 
many-seeded, p. 475. 
Ord. II. Diandria. 2 stamens. 
6. Callitriche. Flowers solitary. Fruit naked, 4-lobed, 4-seeded. 
Styles 2, simple. — Leaves opposite, sessile, p. 387. 
7. Lesina. Spadix 0. Spatha urceolate, membranous, inclosing 
one barren and one fertile flower. Ovary 4-celled. Style and 
stigma 1. — Minute, floating, frondose plants, p. 477. 
8. Carex. Flowers in spikes. Fruit 1-seeded, contained within 
an urceolate membranous perigynium. Style 1, with 2 — 3 
stigmas. — Leaves alternate, sheathing, p. 499. 
Ord. III. Triandria. 3 stamens. 
9. CYPERACEvE. Flowers in spikes, subtended by glumes. 
Achenes with 1 style and 2 — 3 stigmas. — Leaves parallel- 
veined. p. 487. 
10. TYPHACEJE. Flowers in spikes or capitate, without glumes. 
Pericarps indehiscent, with 1 style and stigma. — Leaves 
parallel -veined p. 473. 
11. Amaranthus. Perianth single, deeply 3-partite. Styles 2 — 3. 
Utricle of 1 cell, bursting all round transversely, 1-seeded. — 
Leaves netted- veined, p. 358. 
Ord. IV. Tetrandria. 4 stamens. 
* Leaves all radical. 
12. Littorella. Barren fl. solitary, on long radical peduncles. 
1 From (Ajvotione, and ixot, a house. 
