NICOTIANA.] SOLANACE^. 135 



t.t. xvi Sf xvii ; Prain Beng. PL 752 ; Oooke FL Bomb, ii, 276. N. 

 rustica differs from N. Tabacum in it 3 smaller stature, its sub-orbicular 

 leathery leaves, and in the greenish-yellow flowera, the segments of 

 which are much shorter. 



Petunia. Varieties of P. nyctaginiflora, Juss.,and of P. violacea Lindl. 

 both natives of Argentina, are largely grown in gardens throughout 

 India. They thrive remarkably well, especially in Upper India, and 

 are very showy. They appear to hybridize freely, and when self -sown 

 or as escapes, the colour of the flowera reverts to dull-white, the 

 characteristic colour of P. nyctaginiflora. The flowers are very 

 fragrant during the evening, and this is characteristic of P. violacea. 



LXXIX. SCROPHULARIACEJE. 



Herbs or shrubs, rarely trees, often semi-parasitic. Leaves all, or 

 the lower only, opposite, rarely all alternate or whorled, stipules none. 

 Flowers hermaphrodite, usually more or less irregular ; inflorescence 

 centripetal or composite. Calyx inferior, usually persistent ; lobes 

 5, rarely 4. Corolla hypogynous, more or less 2-lipped or sometimes 

 personate, 4- or 5-lobed. Stamens usually 4, didynamous or sub- 

 equal, with or without a staminode, rarely 5 or only 2 ; anthers 

 variously shaped, 1- or 2-celled, the cells distinct or more or less 

 confluent. Disk annular glandular or cup-shaped. Ovary 2-celled, 

 style simple, stigma capitate or 2-lobed or 2-lamellate ; ovules many, 

 rarely few or only 2 in each cell, anatropous or amphitropous. Fruit 

 capsular, rarely a berry, placentas on a free central axis or remaining 

 attached to the margins of the valves. Seeds small, albumen fleshy, 

 rarely none. Species about 2,209, in all parts of the world. 



Leaves all alternate, corolla sub-rotate : 



Stamens 5 t 1. VERBASCUJI. 



Stamens 4 2. CELSIA.. 



Leaves all opposite or the lower only : 



Corolla spurred or saccate at the base in 

 front : 



Corolla spurred in front . . . .3. LINARIA. 

 Corolla saccate in front . . , .4. A.NTIBEHINUM. 

 Corolla not spurred or saccate at the base in 

 front, capsule opening by valves : 



Corolla with the upper lip or the 2 upper 

 lobes outside in bud : 



