THE GENERA OF BRITISH FLOWERING PLANTS 209 



Order 8. CiSTACE^E 



58. Helianthemum. Sepals 5, 2 outer smaller; 

 petals regular, 5, deciduous, white or yellow; 

 stamens numerous, free; capsule 3-valved. 



Order 9. VIOLACE.S 



59. Viola. Sepals 5, produced at the base; petals 

 5, unequal, the lower spurred; stamens 5; anthers 

 united, 2 lower spurred. 



Order 10. POLYGALACE.fi 



60. Polygala. Sepals 5, persistent, 2 inner 

 winged, petaloid ; corolla irregular, petals 3-5, 

 united, lower keeled; capsule flattened; seeds 

 solitary. 



Order n. FRANKENIACE/E 



61. Frankenia. Style 3-fid, lobes oblong with 

 stigma on inner side; capsule i-locular, 3-4- 

 valved. 



Order 12. CARYOPHYLLACE^E 



62. Dianthus. Calyx gamosepalous, with 2 

 opposite bracts below, 5-toothed; styles 2, free; 

 capsule 4-valved, i -celled; seeds many, peltate, 

 keeled. 



63. Tunica. Like 62 ; petals narrowed below, 

 wedge-shaped. 



64. Saponaria. Calyx without bracts below, 

 round in section, 5-toothed; styles 2; capsule 

 4-valved above, i -celled; seeds granulate. 



65. Silene. Calyx 5-toothed; styles 3-4; capsule 

 3- or 6-valved, with 6 apical teeth. 



66. Cucubalus. Calyx 5-toothed; styles 3; 

 capsule a berry, i-seeded, globular. 



67. Lychnis. Calyx 5-toothed ; petals, with 

 scale below; styles 5; capsule 5-celled, opening 

 above by 5 or 10 teeth. 



68. Holosteum. Sepals 5; petals 5, jagged; 

 stamens 3-5; styles 3; capsule 6-valved, cylin- 

 drical. 



69. Cerastium. Sepals 5 ; petals 5, 2-fid ; 

 stamens 4-10; styles 4-5; capsule tubular, open- 

 ing above by 10 teeth. 



70. Stellaria. Sepals 5; petals 5, 2-fid; sta- 

 mens 10 ; styles 3-5; capsule globose, 6-10- 

 valved ; seeds many. 



71. Arenaria. Sepals 5; petals 5, entire or 

 slightly notched; stamens 8-10; styles 3-5; cap- 

 sule 3-io-valved. 



72. Sagina. Sepals 5 entire; petals 4-5, entire, 

 or o, shorter than sepals; stamens 4-10; styles 

 4-5; capsule 4-5-valved; seeds wingless, uniform. 



73. Spergula. Stipules membranous; sepals 

 5; petals 5 entire, as long as calyx; stamens 

 5-10; styles 5; capsule 5-valved; seeds many. 



74. Spergularia. Sepals 5, petals 5, entire; 

 stamens 5-10; styles 3 or 5; fruit a capsule 

 3-valved. 



75. Polycarpon. Sepals keeled on back ; petals 

 5, notched; stamens 3-5; styles 3, united below, 

 short; capsule i -celled; seeds many. 



VOL. V. 



Order 13. Pc-RTULACE^E 



76. Portulaca. Calyx 2-fid, falling; petals 4-6, 

 distinct or united below; stamens 8-15 distinct. 



77. Claytonia. Sepals 2, persistent; petals 5, 

 free; stamens 5, opposite and adnate to petals; 

 style 3-cleft ; capsule 3-valved, globose ; seeds 3. 



78. Montia. Sepals 2, persistent; petals 5, 

 united below; stamens on throat of tube; style 

 short ; stigmas 3 ; capsule 3-valved. 



Order 14. TAMARiCACE.fi 



79. Tamarix. Shrub; sepals 4-5; petals 4-5; 

 styles 3 ; seeds crowned with tuft of hairs. 



Order 15. ELATINACE.B 



80. Elatine. Aquatic; sepals, petals, stamens 

 and styles 3-4; capsule 3~4-celled. 



Order 16. HYPERICACE^E 



81. Hypericum. Flowers yellow; sepals 5; 

 petals 5; styles 3 or 5; capsule 3-celled; seeds 

 numerous. 



Order 17. MALVACEAE 



82. Althaea. Calyx double; inner 5-fid; outer 

 of 6-9 lobes, united below; styles numerous; 

 carpels in a ring, i-seeded. 



83. Lavatera. Calyx double, inner 5-fid, outer 

 3-lobed, united below; styles many; carpels in a 

 ring, i-seeded. 



84. Malva. Calyx double, inner 5-fid, outer 

 of 3 free segments; carpels in a ring, i-seeded. 



Order 18. TlLlACEfi 



85. Tilia. Trees; sepals 5, deciduous; petals 

 5, with or without a scale below ; stamens numer- 

 ous, free or not; style i; capsule i-celled; seeds 

 1-2. 



Order 19. LiNACE.fi 



86. Radiola. Sepals 4, united below, 3-fid; 

 petals 4; stamens 4; styles 4; capsule 8-celled, 

 8-valved. 



87. Linum. Sepals 5, entire; petals, stamens, 

 styles 5; capsule lo-celled, lo-valved. 



Order 20. GERANIACE^: 



J8. Geranium. Sepals 5; petals 5; stamens 

 10, all functional; carpels rounded above, of cocci, 

 i-seeded; awns not spirally coiled. 



89. Erodium. Sepals and petals 5; stamens 5; 

 staminodes 5 ; carpels with 2 depressions above ; 

 awn spirally coiled. 



90. Oxalis. Sepals 5, united below; petals 5, 

 united below; stamens 10; styles 5; capsule 

 5-io-valved, cells with 2 or more seeds. 



91. Impatiens. Sepals 3, petaloid, lower 

 hooded, spurred; petals 3, upper symmetrical, 

 lateral unequally 2-lobed ; stamens 5 ; anthers 

 united ; capsule explosive ; cells 2 or more seeded. 



76 



