418 ARRANGEMENT OF THE GENERA 



Order XIII. TAMAKISCINEJE. 



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

 ering, imbricate. Stamens as many as the petals, or double in 

 number. Capsule 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 five cells, and as many valves. Seeds numerous. 



1. Elatine, 182, 190. 



Order XV. CAEYOPHYLLE^. 



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

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

 opening longitudinally. Ovary often stalked, stigmas from two- to 

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

 fect cells, opening by twice as many teeth as stigmas. Placenta 

 central. Seeds generally numerous. 



1. Dianthus, 192, 198. 8. Moenchia, 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. LINEJE. 



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 cepals, and as many styles ; stigmas capi- 

 tate. 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. Eadiola, 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. Althjea, 280, 283. 



Order XVHI. TILIACE^E. 



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

 Stamens generally numerous, anthers two-celled, opening longitu- 



