Ceratophyllum.'] MONOECIA — POLYANDRIA. 323 



12. Urtica. Barren Ji. Perianth single, of 4 leaves, con- 

 taining the cup-shaped rudiment of 9. pistil. — Fertile fi. Peri- 

 anth single, of 2 leaves. Pericarp 1-seeded, shining.— A'a^. Ord. 

 Urtice^e, Jms. — Named from uro, to burn, in allusion to its 

 stinging property. 



(See Eriocaidon in Ord. VI. Myrica in Cr.. XXII.) 



ORD. V. PENTANDRIA. 5 Stamens. 



13. Xanthiuji. Barren jl. Involucre of few scales, with 

 many small, capitate^ojf?^?,?, upon a common receptacle. Cal. 

 0. Cor. obovate, sessile. Anthers terminating a tube which is 

 inserted at the base of the cor. Germen abortive. — Fertile fl. 

 Involucre single, prickly, with 2 beaks, entirely enclosing 2 

 flowers ; the 2 stigmas only protruded from small apertures 

 within the beaks. Cal. 0. Cor. 0. Fruit I-seeded, included 

 in the enlarged and hardened iiivolucre. — Nat. Ord. Composite, 

 Juss. — Named from gavtio;, yellow, or fair, because an infusion 

 of this plant was supposed to improve the colour of the hair. 



14. Amaranthus. Barren fl. Pmrt^^</^ single, deeply 3 5- 



partite. Stam. 3 — 5. — Fertile fl. Perianth single, deeply 3 — 

 5-partite. Styles 3 or 2. Capsule of 1 cell, with I seed, bursting 

 all round transversely. — Nat. Ord. Amaranthace^, Juss. — 

 Named from a, not, (j^aoaivoi, to fade; or, flowers which do not 

 fade, commonly called " Everlasting Flowers." 



15. Bryonia. Barren fl. Cal. 5-toothed. Cor. 5-cIeft. Fila- 

 ments 3. Anthers 5. — Fertile fl. Cal. 3-dentate. Cor. 5-cleft. 

 Style trifid. Berry inferior, globose, many-seeded. — Nat. Ord. 

 CucukbitacE/E, Juss. — Named from iSouoj, to shoot or grow 

 rapidly, in allusion to the quick growth of the stems. 



(See Fagus and Quercus in Ord. Polvandria. Atriplex in Class 



POLYGAMIA.) 



ORD. VI. HEXANDRIA. 6 Stamens. 



16. Eriocaulon. Flowers collected into a compact, scaly 



head. — Barreji flowers mt\\G cenivQ. Perianth single, 4 6-cleft, 



the inner segments united nearly to their summit. Stam. 4 — 6. 

 — Fertile flotvers in the circumference. Perianth single, deeply 

 4-partite. Style 1. Stigmas 2 — 3. Capsule 2— 3-lobed, 2 — 3- 

 celled. C(f//* I'Seeded. — Nat. Orrf. Restiace^, Br. — Named 

 from ism, wool, and Ka-jy.oc, the stem ; in allusion to the downy 

 stems or scapes of the species first known. 



(See Quercus in Ord. Polyandria.) 



ORD. VII. POLYANDRIA. Many Stamens. 



17. Ceratophyllum. Barren fl. Cal. inferior, multipar- 

 tite. Cor. 0. Stam. 16 — 20. — Fertile fl. Cal. multipartite. 



