54 Resedaceae, Droseraceae 



Fam. 3. Resedaceae. Herbs with spiral leaves. 

 Flowers in racemes, spiro-cyclic, hermaphrodite, zygo- 

 morphic. Flower-axis passing into a short gynophore 

 which expands below the stamens into an eccentric or 

 semilunar disc. K 4-8. C 0-8. A 3-10. G (2-6). 

 Ovary i-locular, open above. Ovules usually many on 

 parietal placentae. Fruit usually a coriaceous capsule 

 open at the top. No endosperm. Embryo curved. 



Only British genus : Reseda. 



Order 12. Sarraceniales. Herbs with spiral 

 leaves adapted to insect catching. Flowers spiro-cyclic 

 to cyclic, homo- or heterochlamydeous, hypogynous, 

 actinomorphic. Carpels (3-5) with parietal or axile 

 placentation and 00 ovules. Seeds minute with endo- 

 sperm. 



Fam. Droseraceae. Herbs, mostly without main 

 root. Leaves stipulate, spiral, often rosulate ; with 

 digestive glands and irritable hairs or tentacles. Flowers 

 cyclic, heterochlamydeous, hermaphrodite, actinomor- 

 phic. K 5-4. C 5-4. A 5-4-00. G (5-3). Styles 

 5-3, rarely i. Ovary i-locular with 00-3 parietal or 

 basal ovules. Capsule mostly i -celled, loculicidal. Seeds 

 00 -3 with endosperm. Embryo minute. 



Only British genus : Drosera. 



7. Apocarpy ajtd Hypogyiiy still occur but Perigyny becomes 

 more frequent. By si7iking of the Gy?taecium into the hollow 

 flower-axis Syncarpy and Epigynous i?isertion of the periatith and 

 stamens also takes place. (For /3 see page 48, for S see page 61.) 



Order 13. Rosales. Flowers cyclic, rarely spiro- 

 cyclic {Rosaceae — Rosoideae), usually heterochlamy- 

 deous and actinomorphic. Carpels often free. Placefitae 



