172 SUMMER FLOWERS. 



tt Corolla gibbous at the hase in front. 



(239) Antirrhinum — calyx five-parted; corolla personate, the 



lower lip three-cleft, with a prominent palate closing the 

 mouth. 



fft Corolla equal at the hase in front. 

 X Calyx five-cleft, 



(240) Scrophularia — corolla globose, the limb minute, upper lip 



two-lobed, lower three-lobed ; rudimeut of a fifth stamen 

 often present. 



(241) Digitalis — corolla bell-shaped, with broad tube, and oblique, 



4-5-cleft flat limb. 



(242) Pedicularis — calyx inflated ; corolla ringent, the upper lip 



compressed laterally, the lower plane, three-lobed. 



XX Calyx four-cleft. 



(243) Bartsia — calyx bell-shaped ; corolla tubular, two-lipped, the 



upper lip erect, arched, or concave, entire or notched ; 

 seeds many, striated or furrowed. 



(244) Euphrasia — calyx tubular or bell-shaped ; corolla tubu- 



lar, two-lipped, the upper lip two-lobed, spreading or 

 reflexed ; seeds few, furrowed. 



(245) Rhinanthus — calyx inflated, compressed, with a contracted 



mouth ; corolla ringent, the upper lip compressed laterally ; 

 seeds compressed, with an orbicular margin. 



(246) Melampyrum — calyx tubular; corolla ringent, upper lip 



compressed laterally, with reflexed margins ; seeds smooth. 



52. Orobanchaceous Plants. Orobanchace^. 



(247) Orobanche — calyx deeply divided into 2-4 pointed sepals ; 



corolla tubular or bell-shaped, often curved. 



53. Chenopodiaceous Plants. Chenopodiace^. 



* ^tem jointed^ without leaves. 



(248) Salicoruia — stamens 1-2 ; succulent maritime herbs. 



