CARYOPHYLLACEAE 65 



Fruit indehiscent or bursting irregularly, petals wanting. 

 ■ Fruit a berry. 6. Phytolacaceae. 



Fruit an achene or utricle. 



Fruit a lenticular or 3-angular achene, stipules usually united, 

 sheathing i. e. ocreae. 10. Polygonaceae! 



Fruit a utricle or anthocarp, stipules not forming ocreae. 



Calyx corolloid, its limb deciduous, the base persistent around 

 the fruit. 7. Nyctaginaceae. 



Calyx not corolloid, green or scarious. 



Leaves with scarious stipules, 1. Caryophyllaceae. 



Leaves without stipules. 



Flowers usually bractless, bracts if present not scarious. 



9. Chenopodaceae. 

 Flowers with scarious bracts, sepals usually also scarious. 



8. Amaranthaceae. 



1. CARYOPHYLLACEAE. 



Calyx of united sepals, styles distinct to the base. 

 Calyx with ten or more ribs. 

 Styles 5. 

 Alternate with the calyx teeth. 1. Agrostema. 



Opposite the calyx teeth. 3. Lychnis. 



Styles 3-4. 2. Silene. 



Calyx with 5 ribs. 



Petals with a scale at the base of the blade, flowers 2.5 cm. long. 



4. Saponaria. 

 Petals not appendaged at the base of the blade, flovv^ers 8 mm. 

 broad. 5. Vaccaria. 



Calyx of distinct sepals, styles united or distinct. 

 Ovules few to many, friut a dehiscent capsule. 

 Styles distinct to the base. 

 Petals deeply 2-parted. 



Styles 3-5, if 5 alternate with the sepals. 6. Alsine. 



Styles 5, rarely 3-4, opposite the sepals. 7. Cerastium. 



Petals not 2-cleft. entire or em.arginate. 



Seeds many, without a stophiole. 8. Arenaria. 



Seeds few, with a strophiole. ' 9. Moehringia. 



Styles united below; leaves subulate. 10. Loeflingia. 



Ovule solitary, fruit a utricle. 12. Anychia. 



1. Agrostemma. 388. 



1. Agrostemma githago (L.) Ait. 



A common weed in wheat fields. Lincoln; IMinden; Weeping Water. 



2. Silene. 388. 



Leaves apparently verticillte in fours. 1. S. stellata. 



Leaves all opposite. 



Calyx bladdery inflated. 

 Flowers few, subtended by leaf-like bracts, 2. S. nivea. 



Flowers numerous, bracts small or wanting. 3. S. vurgarls. 



Calyx not bladdery, merely expanded by the capsule. 

 Annuals. 



