31 



CLASS 4. TETRANDRIA. 



(Containing Plants with Four Stamens, all of equal length.) 



The fourth class is not a large one, but it contains some very 

 pretty British plants, several of which are common. Besides 

 those mentioned below are the numerous Pond Weeds, the 

 elegant Lady's Mantle, the Madder Plant, and some others, 

 which are small but elegant. 



The garden plants of Tetrandria are not very numerous, but 

 some of them are very pretty ; others very singular. Among 

 them may be mentioned the numerous Proteas and Banksias, 

 the Diandras and Pothos, the Sanguisorba and Contrayerva, 

 the Globularia, Buddlea, Epimedium, Cissus, Sandal Wood, 

 Trapa, and others. 



Order 1. MONOGYNIA. 1 Style. 

 * Flowers above the fruit, on a leafy receptacle, seed one. 



TEASEL, (Dipsacus.) Calyx entire ; corolla regular. 

 SCABIOUS, (Scabiosa.) Calyx bristly ; corolla not regular. 



** Flowers above the fruit, not on a leafy receptacle, seeds two. 

 BEDSTRAW, (Galium.) Calyx none ; corolla of one petal, flat ; 



seeds dry. 

 DOGWOOD, (Cornus.) Calyx of four teeth; corolla of four 



petals ; seeds in a fleshy drupe. 



*** Flowers below the fruit. 

 PLANTAIN, (Plantayo.) Calyx four-cleft ; corolla bent back ; 



capsule two or more seeded. 

 PELLITORY, (Parietaria.) Calyx none ; capsule one- seeded. 



Order 2 . TETRAGYNIA. 4 Styles. 

 HOLLY, (Ilex.) Corolla of one petal ; fruit a berry. 

 PEARL- WORT, (SaginaJ Cor. of four petals ; fruit a capsule. 



