v.] SOLANACEJE, OROBANCHACE^. 133 



mature at the same time; but as the former project 

 above the latter, they are necessarily touched first. 

 If the visits of insects be too long deferred, the 

 flower fertilises itself. C. arvensis closes in _wet 

 weather and at night. 



C. sepium, on the contrary, remains open during 

 rain, but closes at night, unless there be a moon, 

 when it remains expanded. It has no smell, and is, 

 perhaps, on that account, in spite of its large size 

 comparatively little visited by insects. 



SOLANACE^. 



The British genera are the following : Hyoscyamus (the Henbane) 

 Solanum (the Nightshade), and Atropa. Datura is sometimes found 

 growing wild, but it is not a true native. 



Solanum secretes no honey, and is little visited by insects. Hyos- 

 cyamus, on the contrary, is melliferous, and cross-fertilisation is favoured 

 by the projectiL'U of the stigma beyond the anthers. 



OROBANCHACE^. 



A curious family, with simple or rarely-branched stems, and scales 

 instead of leaves. The species are either brown or purplish, but never 

 green, and are parasitical on the roots of other plants. There are two 

 British genera : Orobanche (Broomrape) and Lathrasa. 



SCROPHULARIACEjE. 



This is a large family consisting of fourteen genera; 

 and contains Veronica (Fig. 97), Verbascum (Mullein), 

 (Fig. 98), Linaria, Antirrhinum (Snapdragon), Scro- 

 phularia (Fig. 99), Digitalis (Foxglove), (Fig. loo), 

 Euphrasia (Eyebright), (Fig. 106), Rhinanthus 

 (Rattle), &c. 



