326 Borraginacece Heliotropiwn. 



varieties in cultivation, varying in every shade from white to 

 a rich dark blue and violet, or white and blue. H. grandiflorum, 

 differing mainly in its larger foliage and flowers, is probably 

 the parent or co-parent of some of these varieties. The only 

 objection to the second species is its comparatively scentless 

 though larger flowers. The variety commonly seen in gardens 

 under the name of Voltaireanum should be Volterrianum, 

 after the village of Volterra in Italy. 



H. suaveolens is a beautiful hardy annual species from the 

 Caucasus, with white highly fragrant flowers. It appears to 

 be almost unknown in this country, but in Eussian gardens it 

 takes the place of the Peruvian species. 



Tournefortia heliotropoldes is an allied hardy suffruticose 

 perennial from South America with violet-blue flowers. 



ORDER LXXV1L SOLANACE^I. 



Herbs or shrubs with alternate or -sub-opposite entire or pin- 

 natisect leaves and regular pentamerous flowers. Calyx 

 inferior, 5- or rarely 4-lobed. Corolla regular or slightly 

 unequal, hypogynous, usually 5-lobed, plaited, imbricated or 

 valvate in aestivation. Stamens free, of the same number as 

 the corolla-lobes, and alternate with them. Fruit usually 2- 

 celled, capsular or baccate, rarely 4- or many-celled. Seeds 

 many, albuminous, usually kidney-shaped. This is a large and 

 important order, comprising about 50 genera and upwards of 

 1,000 species, the greater part from tropical countries. Amongst 

 the useful species we may quote the Potato (Solanum tuberb- 

 sum), and Tomato or Love- Apple (Lycopersicum esculentum). 

 It is worthy of remark, too, that many of the members of this 

 family are virulently poisonous. 



1. EABIANA. 



Shrubs with small scattered or imbricated leaves and solitary 

 extra-axillary flowers. Calyx tubular, 5-lobed. Corolla tubular, 

 funnel-shaped ; limb shortly 5-lobed. Stamens 5, included. 

 Fruit capsular, 2-celled, 2-valved, enveloped in the persistent 

 calyx. The few species described are all South American. 

 The name is commemorative. 



1. F. imbricata. A Heath-like evergreen shrub of close 

 erect growth. Leaves small, crowded. Flowers jmre white, 



