IgO. U». ACANTHACEAE. 



2 or 5 parted. Corolla 2 lipped, spurred or saccate. Stamens 2. 

 Anthers 1 celled. Ovary superior, 1 celled with free central 

 placenta. Ovules several or many. Fruit a capsule. Seeds exen- 

 dospermic. 2 genera 10 species. 



Calyx of 2 sepals. 1 UTRICULARIA. 



Calyx deeply 5 partite. Bladders tubular with 2 spirally twisted 

 arms. 2 GENL1SEA. 



1. UTRICULARIA. (In vleis or streams. Bladders usually pre- 



sent.) 



1. livida E.M. Terrestrial. Coast and Midlands. Common. 



2. tribracteata Hochst. Terrestrial. Coast and Midlands. 



3. sandersoni Oliv. Terrestrial. Midlands. 



4. prehensilis E.M. Terrestrial. Coastbelt. 



5. stellaris L. Aquatic. Coastbelt and Midlands. 



6. foliosa L Aquatic. 



7. elevata Kam. Near Durban. 



8. exoleta R.Br. Aquatic. Coast to Drakensberg. 



9. engleri Kam. Drakensberg. 



2. GENLISEA A. St. Hil. 



hispidula Stapf. 



FAMILY 140— ACANTHACEAE. 



Herbs or shrubs. Leaves opposite, simple exstipulate. Flowers 

 more or less irregular, hermaphrodite, 4 — 5 merous. Petals united 

 below. Fertile stamens 2 or 4. Style simple. Stigma entire or 2 

 lobed. Ovary superior, 2 celled. Fruit a capsule, more rarely a 

 drupe. Seeds 2 or more. Funicle with an outgrowth (except in 

 Thunbergia). Seeds mostly exendospermic. 22 genera 91 species. 



1. Corolla with contorted aestivation (i.e., no lobe wholly within 



or wholly outside the others in the bud). 2. 



Corolla imbricate, but not contorted in the biio. 0. 



2. Ovules 2 in each cell collateral. Funicle without a distinct out- 



growth. Stamens 4. Bracteoles 2 large, enclosing the 

 small calyx. 1 THUNBERGIA. 



Funicle with an outgrowth distinct, usually hook-shaped. 

 Stamens 4 (or 2 in Chaetacanthus). Seeds covered with 

 fine white hairs. Corolla nearly regular. (Ruelliaae). 3. 



3. Stamens 2 with or without rudiments of 2 others. 



4 CHAETACANTHUS. 

 Stamens 4, all fertile. 4. 



4. Fruit compressed from back to front, 2 — 4 seeded. Calyx seg- 



ments very unequal, the posticous ovate, bractlike. 



5 PHAULOPSIS. 



Fruit terete or 4 angled. Calyx equally lobed or obscurely 2 



lipped. 5. 



