FLOWERS, THEIR STRUCTURE AND KINDS 163 



indicated by the lobes, two broad outer ones and a smaller 

 middle one. The lower part of this lip is prolonged into a long 

 straight spur. The upper part of the lower lip, at the point to 

 which the incision extends that indicates the lobes, is of a deep 

 orange color and arched upward so that it closes the " throat" 

 of the corolla. This is called the palate, and when at rest it 

 closes the throat. By pulling apart on the two lips the throat is 

 exposed, and at the same time it is seen that the incision which 

 separates the two lips is much deeper than those which separate 

 the petal lobes of each lip. 



259. The stamens are four in number and are seated on the 

 corolla near the base of the broad part of the throat around the 

 ovary. The stamens are of two forms (dimorphic), the two lower 

 ones being shorter than the upper ones. They are shown in 

 fig. 1 10 attached to the base of the corolla tube, the corolla having 

 been removed from the receptacle and the lower lip cut away. 

 The anther lobes are two in number and nearly confluent at one 

 end, where the filament is inserted between them, and diverge 

 somewhat from this point. Each locule opens by a longitudinal 

 slit along the inner face, the face opposite to the attachment of 

 the filament. 



260. The pistil is single and entire. The ovary is superior, 

 oval in shape, and two-loculed. There is a thickened placenta on 

 either side of the partition which is covered with numerous ovules 

 which fill the locules. The style is simple, short, filamentous and 

 slightly enlarged at the end, the upper surface being the stigma. 



The Sweet Pea. 



261. The flowers of the sweet pea are produced singly or in 

 loose clusters of two or three on long flower stems or peduncles. 

 The calyx is regular, gamosepalous, green, and divided into five 

 even or nearly even pointed lobes which represent the sepals. 

 It is inferior. 



262. The corolla is irregular and peculiar in form, said to be 

 butterfly-shaped (papilionaceous). The upper petal is the 

 broader one, nearly rounded and with a short limb. It usually 



