DECANDR1A. xlv 



ORDER II. DIGYNIA. 2 Pistils. 

 * Perianth single. 



7. POLYGONUM. Perianth deeply 5-cleft ; seed 1. 

 Herbaceous plants with alternate leaves and sheathing 

 stipules. PERSIC ARIA TRIBE. P. 537. 



8. SCLERANTHUS. Perianth contracted at the mouth, 

 5-cleft ; seed 1. A humble herbaceous plant, with 

 repeatedly forked stems, linear leaves, and small green 

 flowers. KNAWEL TRIBE. P. 535. 



9. CHRYSOSPLENIUM. Capsule 2-beaked, many-seeded. 

 Herbaceous aquatic plants, with juicy stems and 

 leaves, and small greenish yellow flowers. SAXIFRAGE 

 TRIBE. P. 241. 



* * Perianth double. 



10. SAXIFRAGA. Petals 5 \ capsule opening with 

 valves or teeth. Mostly alpine herbaceous plants, with 

 tufted leaves and panicled large flowers. SAXIFRAGE 

 TRIBE. P. 241. 



{Petals 5 ; capsule 1 -celled, open- 

 ing with teeth. Herbaceous plants 

 with glaucous, opposite leaves, and 

 i -u j \ a V> 



terminal handsome flowers. PINK 

 TRIBE. P. 87. 



ORDER III. TKIGYMA. 3 Pistils. 



13. POLYGONUM. Perianth single ; seed 1. Herba- 

 ceous plants with alternate leaves and sheathing stipules. 

 PERSICARIA TRIBE. P. 537. 



14. SILN r Sepals 5 ; petals 5 ; capsule many- 



15. STELLARIA. seeded. Herbaceous plants with 



16. HONCKENYA. I opposite leaves and terminal 



17. ARENARIA, 1 flowers. CHERLERIA is often with- 



18. MALACHIUM. out petals. PINK and CHICKWEED 



19. CHERLERIA. I TRIBES. P. 87. 



d 



