PLOT E 75 



votnica and S. toxifera yield strychnine and the celebrated Wourali poison 

 used for arrows by the Guiana natives. Buddleia albiflora, colvilei, and 

 variabilis are shrubby herbs of recent introduction, but B, globosa is 

 still one of the best. The genus was formerly regarded as Scrophularine. 



Along the north end of the plot are 



Ord. 1 1 8. GENTIANEAE. A bitter tonic is prepared from 

 the root of G. lutea. 



Ord. 119. POLEMONIACEAE include Jacob's Ladder, Pole- 

 monium coeruleum, Phlox, and the useful green-house climber, 

 Cobaea scandens. 



Ord. 120. HYDROPHYLLACEAE, including Nemophila and 

 Eutoca, have divided leaves and fruits technically described as 

 capsules. 



Ord. 121. BORAGINACEAE include the Forget-me-nots, 

 Myosotis ; Comfrey, Symphytum ; Hound's -tongue, Cyno- 

 glossum ; Lungwort, Pulmonaria and the green-house plant, 

 Heliotropium peruvianum. 



Ord. 122. CONVOLVULACEAE, or Bindweeds, are well-known 

 climbing plants which, in the case of the members of the 

 genus Cuscuta, the Dodders, have twined themselves into such 

 close relations with their support as to have become wholly 

 parasitic upon it. Cuscuta trifolii is very injurious to clover. 



The Sweet Potatoes of tropical America are the roots of 

 Ipomoea Batatas. /. learii flowered in June in the open 

 border in 1842. 



Ord. 123. SOLANACEAE. The Nightshades are mostly 

 harmful 



Foxglove and nightshade side by side 

 Emblems of punishment and of pride ( SCOTT) ; 



but, on the other hand, Lycopersicum esculentum, the Tomato, 

 and Solatium tuberosum, the Potato, go far to redeem the good 

 character of the order. The Deadly Nightshade, Atropa 

 belladonna, and Henbane, Hyoscyamus niger, yield the well- 

 known alkaloids of the same name. The Thorn Apple, 

 Datura stramonium, belongs to a second section of the order, 



