44 CLASS VI. ORDER I. 



Apium. Fruit ovate, striate : involucre 1 -leafed : pet- 

 als equal. 



* Polygonum. 



ORDER III. TRIGYNIA. 



A. Carols. superior , 5 -cleft. 



Viburnum. Calyx 5-parted : berry or drupe 1 -seeded, 

 Sambucus. Calyx 5-parted : berry 3-seeded. 



JJ. Carols inferior 9 5-petalled. 



Staphylea. Calyx 5-parted : capsules inflated, con- 

 nate ; nuts globular, having a cicatrice. 



Rhus. Calyx 5-parted ; berry 1 -seeded. 



Jttsine. Calyx 5-leaved t petals equal : capsule 1 -cell- 

 ed, 3-vaived, many seeded $ having a free central colu- 

 mella. 



* Euphorbia. 



ORDER IV. TETRAGYNIA. 



Parnassia. Calyx 5-parted : corol 5-petalled : necta- 

 ries 5, with stamen-like divisions, globular tips : cap- 

 sule 4-valved, 2 -celled : seed membranaceous-margined* 



ORDER V. PENTAGYITIA. 



JJralia. Umbellets involucred : perianth 5-toothed, su- 

 perior : petals 5 : berry crowned, 5-celled -, cells 1 -seed- 

 ed. 



Linum. Calyx 5-leaved : corol 5 -petal led : capsule 5- 

 valved, 10-celled : seeds solitary : filaments thickening 

 at the base. 



* Cerastium. 



CLASS VI. HEXANDRIA, 

 ORDER I. MONOGYNIA. 



A. Flowers 'with a perianth and corol 9 without a spathe. 



Tradescantia. Calyx inferior, 3-leaved : corol 3-petaI- 

 led : filaments with jointed hairs : capsules 3-celled. 



Berberris. Calyx inferior, 6-leaved : petals 6, with 2 

 glands at the claw of each : style o : berry 1 -celled, 2- 

 seeded. (Stigiria navelled ; stamens spring up on being 

 irritated.) 



