326 Borraginacce—F{cliotropium. 
varieties in cultivation, varying in every shade from white to 
a rich dark blue and violet, or white and blue. H. grandiflérum, 
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 Voltaireanwm should be Volterrianum, 
after the village of Volterra in Italy. 
H. suavéolens 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 Russian gardens it 
takes the place of the Peruvian species. 
Tournefortia heliotroporides is an allied hardy suffruticose 
perennial from South America with violet-blue flowers. 
Orper LXXVIL—SOLANACEZE. 
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 xstivation. 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 tuberd- 
sum), and Tomato or Love-Apple (Lycopérsicum esculéntwm),. 
It is worthy of remark, too, that many of the members of this 
family are virulently poisonous. 
1. FABIANA. 
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-cellcd, 2-valved, enveloped in the persistent 
calyx. The few species described are all South American. 
The name is commemorative. 
1. FL imbricctu.—A Heath-like evergreen shrub of close 
erect growth. Leaves small, crowded. Flowers pure white, 
