GROUPS AND ORDERS. 293 



Grocp 8. Ovary free, 1 - 2- (sometimes spnriously 4-) ceUed, with numerous ovules. Corolla 2-lipped or irregular ; the 

 stamens inserted upon its tube, and mostly fewer than its lobes, or often didynamous. 

 * Ovary one-celled. 



64. Lentibclace^. Oxary with a free central placenta.— Herbs, Rowing in water or wet places. Flowers on 



scapes. 



65. OROBiNCniCE^. Ovary with parietal placenta;.— Herbs ; parasitic on roots, destitute of foliage; 



*• Ovary 2-celled, with the placenta; in the axis. 



66. PEDiLucEi. Ovary surrounded wth a fleshy disk. Fruit indurated or drupaceous, often 2 - 4-homed. Seeds 



without albumen. — Usually viscid herbs. 



67. ScHoPHULARiAcEa:, Stamens 4, didynamous (rarely only 2, or with a 5th sterile filament). Capsule 3-valved. 



Seeds numerous, albuminous. 



Grocp 9. Ovary free, 2 - 4-Iobed, and in fruit separating into as many one-seeded little nuts or achenia, or else entire 

 and drupaceous, including as many one-seeded nucules. Corolla regular or irregular ; the st'amens inserted 

 upon its tube, equalling its lobes, or fewer in number. 



68. Verben-acej:. Corolla 2-lipped, or 4 - 5-lobed and more or less irregular. Stamens mostly 4 and didynamous 



sometimes only 2. Ovary entire, 2 - 4-celled. Fruit drupaceous, baccate or dry, usually splittin.^ 

 into 2-4 indehiscent carpels. "^ 



69. Labiate:. Corolla 2-lipped. Stamens 4, didynamous, or only 2. Ovary deeply 4-lobed ; the style proceeding 



from the base of the lobes. Fruit consisting of 4 little nuts or achenia included in the persistent 

 calyx, — Aromatic herbs, or somewhat shrubby plants with square stems. 



70. B0RAGIKACE.1:. Corolla regular; the limb 5-lobed, often with a row of scales in the throat. Stamens as many 



as the lobes of the coroUa, and alternate with them. Fruit consisting of 4 little nuts or achenia. — 

 Herbs or sometimes shrubby plants, with round stems and alternate rough leaves. 



Group 10. Oyary free (superior), compound or with the carpels distinct, with several or numerous (rarely soUtary) ovules 

 in each cell. Corolla regular ; the stamens inserted on its tube, as many as its lobes and alternate with them . 

 • Ovary compound, of 2 or more united carpels. 



71. Htdroputllaceje. Calyx 5-cleft, with the sinuses often appendaged. Corolla usually furnished with scales 



or honey-bearing grooves inside ; the five stamens inserted into its base. Ovary with two parietal 

 placenta;.— Herbs with lobcd leaves. 



72. DiAPE.s-siACEi:. Calyx of 5 imbricated sepals. Corolla 5-lobed. Stamens with petaloid filaments : anthers 



transversely 2-valved. Capsule 3-vaIved. Embryo with a slender radicle and short cotyledons.— 

 Low evergreen shrubs. 



73. CoNVOLVCLACEiE. Calyx of 5 imbricated sepals. Corolla plaited and twisted in Estivation ; the limb often 



entire. Stamens 5. Capsule 2-4- (sometimes 1-) celled, septifragal. Seeds large, with foliaceous 

 crumpled cotyledons. — Twining plants, with showy flowers. 



74. SoLA-VEi. Calyx of 4 - 5 more or less united sepals. Corolla regular or sometimes a little irregular, plaited in 



estivation. Capsule or berry 3-celled, many-seeded. Embryo mostly curved, in fleshy albumen. — 

 Herbs or shrubs, with watery juice and alternate leaves. 

 i5. GENTiA.VACEi:. Calyx of 4 - 5 persistent, more or less united sepals. Corolla mostly twisted in a;stivation. 

 Ovary onc-celled, with 2 parietal but often introflexed placentae. Capsule many-seeded. Seeds with 

 fleshy albumen and a minute embryo.— Herbs with a waterj' juice. Leaves mostly opposite. Flowers 

 showy. 



•• Ovaries mostly 2, and distinct. Fruit usually consisting of 2 follicles. 

 7C. Apocy.NACEa:. FilamcnU distinct ; the anthers sometimes slightly connected. Pollen granular. 



77. AscLEPlADACE*:. Stamens consolidated with the stigma. Pollen collected into masses, which arc attached to 



the angles of the stigma. 



Group U. Otary free, 2K:eiled, with 1 -3 ovule, in each cell. Fruit 1 - 2-seeded. Corolla regular, sometimes nearly 

 polypctalous, occasionally wanting. Stamens 2, or fewer than the lobes of the corolla, inserted upon its 

 tube or upon the receptacle. — Shrubs or trees. 



78. OLEACEjt. Calyx persistent. Corolla 4-cloft, or of 4 distinct petals. Stamens 2. Fruit usually onc-celle<l 



1 - 2-«ccded. 



