5G TETRANDRIA — MONOGYNIA. \_Parie(aria. 



tinct margin to the cal Nat. Ord. RubiacEjE, Juss. — Named 



from asper, rough, owing to tlie roughness of some species of 

 the genus. 



7. Sherardia. Co7\ funnel-shaped. Fruit crowned with the 

 cal. — Nat. Ord. Rubiace^, Juss. — Named in honour of Jas 

 S/ierard, an English Botanist and Patron of that science, whose 

 fine garden at Elthani in Kent gave rise to the famous " Hor- 

 tus Elthamensis" of Dillonius. 



*** Perianth double. Co?; monopetalotis, inferior. Seeds 2 or 

 many. 



8. ExACUM. Cal. 4-cleft. Cor. 4-cleft, salver-shaped, marces- 

 cent, the ^M^e swelling. yl;<;/jer5 opening longitudinally. Stigma 

 entire. Caps. 1 -celled, 2-valved, Seeds attached to 2 sutural 

 receptacles, which at length separate with the opening of the 

 two-valved caps. — Nat. Ord. Gentiane;e, Juss. — Name, s^, 

 out, and ayu, to conduct, anciently applied to the Errjthrcea Cen- 

 taurium, a genus allied to this, and which was supposed to have 

 the property of ejecting poison from the stomach. 



9. Plantago. Cor. 4-cleft, the segments reflexed. Stain. 

 very long. Cajjs. of 2 cells, 2- or many-seeded, bursting all 

 round transversely. — Nat. Ord. PLANTAGiNEiE, Juss. — Name 

 of doubtful origin. — All the species are mucilaginous and as.- 

 tringent. 



10. Centunculus. Cor. tubular, 4-partite. Stam. short. 

 Caps, of 1 coll, many-seeded, bursting all round transversely. — 

 Nat. Ord. PRiJiL'LACEiE, Vent. — Name, itappears, ancientlygiven 

 to the Pimperjiel, a genus allied to this ; and derived, according 

 to Theis, from Cento, a covering, because it was a little weed 

 that covered the cultivated fields. 



(Some Gentiance. See Cl. V. Ord. II.) 



**** Perianth double. Cor. of ^t petals. 



11. Epimedium. Cal. of 4 leaves, caducous. Pet. inferior, 

 with an inflated nectary on the upper side. Pod 1-celled, 2- 

 valved, many-seeded. — Nat. Ord. BERBERiDEiE, Vent. — Name 

 of obscure origin ; applied by Dioscorides to some plant which 

 grew plentifully in Media. 



12. CoRNUS. Cal. of 4 teeth. Petals without a nectary, su- 

 perior. Nut of the drupe with 2 cells and 2 seeds. — Nat. Ord. 

 Corner, DC. — Named from cornu, a horn; owing to the hard 

 nature of the wood. 



(See Euonymus in Cl. V. Cardamine and Coronopus, in Cl. XV.) 



***** Perianth single, 



13. Partetaria. Perianth 4-fid, inferior. Filaments of the 

 stam, at first incurved, then expanding with elastic force. Fruit 



