322 MONOECIA — TETnANDIUA. lB/f.vu3. 



upon a chaffy or hairy receptacle, united below into 1 filament. 

 — Fe7't. f. Perianth 0. Pericarp pedicellate, surrounded at the 

 base with hairs resembling a pappus. — Nat. Orel. Aiioide^, 

 Juss. — Named from rv^og, a marsh, where the plant grows. 



6. Sparganium. Flowers in sphserical, dense heads. — Bar- 

 ren Ji. Perianth single, of 3 leaves. — Fertile fl. Periardh sin- 

 gle, of 3 leaves. Drupe dry, with 1 seed. — Nat. Ord. AROiDEiE, 

 Juss. — Name ciras^yavov, a little band, from its narrow and long 

 leaves. 



7. Carex. Flotvers coWecte: a into an imbricated 5/jiAe. Calyx 

 (as it is usually called), a scale. — Barren Jl. Cor. 0. — Fertile. 



jl. Cor. of 1 piece, urceolate, swollen. Stigmas 2 — 3. Nut 

 triquetrous, included within the persistent corolla (which is thus 

 considered to form part of the friiit.^ — Nat. Ord. Cyperace^, 

 Juss — Name, supposed to be derived from xs/sw, to shear or cut^ 

 in allusion to its sharp leaves and stems. 



8. Elyna. Spikelets 2-flowered, upper one sterile, lower one 

 fertile, (sometimes 1 is wanting,) included in a broad sheathing 

 bractea, and each within a convolute scale. Cal. 0, Cor. Par- 

 ogen fl. Stam. 3. — Fertile Jl. Pistil 1. Stigmas 3. Nut obtusely tri- 

 gonal, surrounded by its convolute scale. — In habit nearly allied 

 to Scirpus, and still more closely to Blysmus ; but the flowers 



are monoecious. It has not the urceolate corolla of Carex 



Nat. Ord. Cyperacea<:, Juss. — Named, I presume, from sXjw, 

 to involve or surround, which the scale does the flower. 



ORD. IV. TETRANDRIA. 4 Stamens. 



9. LiTTORELLA. Barren Jl. Cal. of 4 leaves. Cor, 4-fid. 

 Stam. very long. — Fertile Jl. Cal. 0, (unless three bracteas can 

 be so called.) Cor. ui'ceolate, contracted at the mouth. Style 

 very long. Caps. 1-seeded. — Nat. Ord. Plantagine;e, Juss. 

 — Named from littus, the shore, from its place of growth. 



10. Alnus. Flowers collected into imbricated catkins. — 

 Barren Jl. Scale of the catkin 3-lobed, with ^ floivers. Peri- 

 anth single, 4-partite. — Fertile fl. Scale of the catkin subtrifid, 

 with '1 Jiowers. Perianth 0. Styles 2. Nut compressed. — Nat. 

 Ord. AiMENTACEyE, Juss. — Name, derived from the Celtic, al, 

 near, and Ian, the river-bank. 



11. Buxus. Flowers clustered, axillary. — Barren Jl. Peri- 

 anth single, of 4 leaves, 2 opposite ones smaller (with one 

 bractea at the base). Rudiment of a germen. — Fertile fl. Cal. 

 as in the barren Jl.. (with 3 bracteas at the base). Styles 3. 

 Caps, with 3 beaks, 3-celled ; cells 2-seeded. — Nat. Ord. Eu- 

 PHORBiACEiE, Juss. — Name, altered from vu'^o;, the Greek name 

 for this tree. 



