418 ARRANGEMENT OP THE GENERA 



Order XIII. TAMARISCINE^!. 



Calyx five-parted, persistent. Petals four or five, regular, withering, 

 imbricate. Stamens as many as the petals, or double in number. Cap- 

 sule one-celled, three-valved, many-seeded. Seeds comose. 



1. Tamarix, 114, 159. 



Order XIV. ELATINE^E. 



Sepals three or five. Petals three or five, sessile. Stamens as many 

 as the petals, or double their number, free. Ovary three-celled, or five- 

 celled, styles three or five, stigmas capitate. Capsule with three or ive 

 cells, and as many valves. Seeds numerous. 



1. Elatine, 182, 190. 



Order XV. CARYOPHYLLEjE. 



Sepals five or four, distinct or united. Petals five or four, clawed. 

 Stamens ten or eight, inserted upon a fleshy disk or ring, anthers open- 

 ing longitudinally. Ovary often stalked, stigmas from two to five, 

 filiform. Capsule one-celled, or with from two to five imperfect cells, 

 opening by twice as many teeth as stigmas. Placenta central. Seeds 

 generally numerous. 



1. Dianthus, 192, 198. 8. Mcenchia, 64, 108.' 



2. Saponaria, 192, 198. 9. Holosteum, 61, 95. 



3. Silene, 192, 199. 10. Stellaria, 192, 201. 



4. Lychnis, 192, 207. 11. Arenaria, 192, 202. 



5. Agrostemma, 192, 206. 12. Cerastium, 192, 208. 



6. Sagina, 96, 108. 13. Cherleria, 192, 204. 



7. Spergula, 192, 209. 



Order XVI. LINE^. 



Sepals three to five, persistent. Petals three to five, twisted, clawed, 

 caducous. Stamens as many as the petals, united at the base into a 

 hypogynous ring, with intermediate teeth. Ovary with about as many 

 cells as sepals, and as many styles ; stigmas capitate. Capsule globose, 

 generally tipped with the hardened base of the styles, and having four 

 or five cells, each subdivided. Seeds one in each division, pendulous. 

 1. Linum, 114, 161. 2. Radiola, 96, 109. 



Order XVII. MALVACEAE. 



Calyx five-cleft, involucrate. Corolla regular, of five twisted petals. 

 Stamens numerous, monadelphous, anthers one-celled, kidney-shaped, 

 opening transversely. Ovary of several carpels, united round a common 

 axis. Carpels with one or several seeds. 



1. Lavatera, 279, 284. 2. Malva, 280, 283. 



3. Althaea, 280, 283. 



Order XVIII. TILIACE,E. 



Sepals four or five, valvate. Petals four or five, sometimes none. 

 Stamens generally numerous, anthers two-celled, opening longitudinally. 



