182: : 134. SCReflPHULARIACEAE. 



6. DATURA L 



1. stramonium L. Common weed. "Stinkblaar." "iVoii' 



2. fasiuosa L. Near Durban. Introduced. 



7. NICOTIANA L. 



1. glauca- R. Graham. Small tree. Introduced.'' 



2. tabacum L. Cultivated. 



FAMILY 134— SCROPHULARIACEAE. 



Herbs, shrubs or trees, sometimes hemiparasitic on roots. 

 Leaves exstipulate. Flowers hermaphrodite, usually irregular. 

 Petals 4 — 5, united below, imbricate in bud. Stamens usually 4, 

 rarely 2, 3 or 5. Anthers 1 or 2 celled. Ovary superior 2 celled, 

 the partition at right angles to the median plane of the flower, 

 rarely 1 celled or (Bowkeria), 3 celled. St3'le simple or 2 cleft. 

 Fruit usually capsular. Seeds few or man}^ endospermic. 31 



genera II2 species. 

 1. Posterior lip or upper lobes of corolla exterior in the bud. 2. 



Posterior lip or upper lobes of corolla overlapped in the bud 

 by one or both the lateral lobes. 2O. 



2. Leaves all alternate or rarely opposite. Corolla almost regular. 



Tube long. Lobes nearly equal. i PELIOSTOMUM. 



■ Leaves (at least the lower) opposite or all radical. 3. 



3. Corolla with 1 — 2 spurs, pouches or pits. " 4. 

 Corolla without any pocket or spur. 6. 



4. Corolla tube very short or obsolete. Limb rotate or concave. 



2 DIASCIA. 

 Corolla with a distinctly developed tube. 5. 



5. Posterior lip entire or emarginate. Anterior lip 4 lobed. 



3 NEMESIA. 

 Posterialip 2 lobed. Anterior lip 3 lobed. 4 DICLIS. 



6. Shrubs (in one case epiphytic) or trees. Flowers in cymes or 



cymose panicles or fascicles. Occasionally solitary with 



2 bracteoles on the pedicel. 7. 



Herbs or undershrubs. Flowers solitary or in heads, spikes, 



racemes, or racemose panicles. I2. 



7. Corolla tube short and wide. 8. 



Corolla tube long and narrow. 9. 



8. Leaves opposite. Calyx shortly 5 cleft valvate. 



9 ANASTRABE. 



Leaves usually tcrnately whorled. Calyx 5 parted imbricate in 



the bud. 10 BOWKERIA. 



9. Leaves decussate, fleshy. Epiphyte. 5 DERMA.TOBOTRYS. 

 Leaves not decussate. Trees and shrubs. 10. 



10. Calyx 3—5 cleft. Anther halves divergent. 6 HALLERIA. 

 Calyx 5 parted. Anther halves parallel or nearly so, separate. 11 



