394 FLOWERS OF GARDEN AND GREENHOUSE 



Phacelia campanularia (bell-flowered). Stem much 

 Principal SP^^^i^s-b^anelied, 6 to 8 inches high. Leaves oblong, with rounded 

 teeth. Flowers, ^-inch across, deep blue spotted with white; June to 

 September. Annual. Introduced from California, 1882. 



P. visciDA (sticky). Stem erect, branched, 12 inches high, with 

 broad-ovate, saw-toothed leaves, and blue or purplish flowers in many- 

 flowered, erect racemes ; July. Annual. Introduced from California, 1834. 

 P. WHITLAVIA (Whitla's). Stem downy, 2 feet high, with oval- 

 wedge-shaped, doubly-toothed leaves, and rich blue bell-shaped flowers 

 in terminal racemes ; June. Annual. Introduced from California, 1854. 

 Phacelias succeed in almost any garden soil with the 

 treatment usually accorded to annuals. Seeds should be 

 sown thinly in the open border from the end of February to the end of April. 



WIGANDIAS 



Natural Order Hydrophyllace^. Genus Wigandia 



WiGANDiA (named in honour of John Wigand, 1523-1587, a Bishop of 

 Pomerania). A small genus containing only three or four species of 

 bristly perennial herbs, with alternate, broad, wrinkled leaves, and 

 five-lobed, bell-shaped, tubular flowers. They are natives of the 

 mountain regions of Tropical America. 



Wigandia macrophylla (large-leaved). Stem erect, 

 ) 20 feet high. Leaves heart-shaped, hairy, rusty above ; 

 the lower ones 2 to 3 feet long. Flowers lilac, in one-sided spikes ; April. 

 Introduced from Caraccas, 1836. Commonly known as W. caracasana. 

 In Tropical countries this grows to a large size, 20 feet or more in height 

 and 40 feet through, and bears a profusion of lilac-blue flowers in spring. 

 It is a popular summer-bedding plant in the London parks. 



W. URENS (stinging). Stem branched, 6 feet high. Similar to the 

 last, but leaves with longer reddish stalks and of more spreading habit. 

 Flowers violet-blue ; September and October. Introduced from Mexico, 

 1836. The hairs in this species are of a virulent stinging nature. 



W. ViGiERi (Vigier's). Stem 6 feet high. Leaves with footstalks 

 9 inches long. Flowers lilac-blue turning to fawn-colour, in large 

 panicles; September and October. Introduced from Mexico, ISfiH. 



Wigandias require stove or gi-eenliou.si' titutnitnt, 

 but may be used for Sub-tropical gardening in the middle 

 They are propagated by means of seeds and cuttings. 



Principal Species 



