5& SYMPETAIAE 



650. Seeds exalbuniinous, usually horizontal and winged. Ovules numerous. 



Stigmas 2. Stamens 4. Shrubs or trees. Leaves usually compound. 



209. Bignoniaceae, 

 Seeds albuminous. Leaves simple, but sometimes dissected. . . 651 



651. Albumen very thin, nearly membranous. Stigmas or stigma-lobes 2. 



Stamens 4. Plants with glandular hairs. Lower leaves opposite. 



210. Pedaliaceae. 

 Albumen distinctly developed 208. Scrophulariaceae. 



652. (641.) Corolla with contorted aestivation. Stamens 4 653 



Corolla with valvate or imbricate, not contorted aestivation. . . 654 



653. Style stigmatose below the apex. Mostly shrubs or trees. 



200. Apocynaceae, 



Style stigmatose at the apex or between the apical lobes. Fruit a septi- 



cidal capsule. Herbs or undershrubs. . . . 199. Gentianaceae. 



654. Corolla scarious. Stamens 4. Disc wanting. Stigma i. Fruit dehis- 



cing by a lid. Flowers in spikes or heads. Plantago, 



218. Plantaginaceae. 

 Corolla not scarious. Fruit dehiscing lengthwise or indehiscent. 655 



655. Anthers with confluent halves, opening by a transverse slit. Disc more 



or less distinctly developed 208. Scrophulariaceae. 



Anthers with distinct halves, opening by two longitudinal slits or apical 

 pores 656 



656. Leaves alternate, simple, but sometimes dissected. Corolla usually 



folded in bud. Partition of the ovary usually placed obliquely to the 

 median plane of the flower. Ovules generally numerous. 



207. Solanaceae, 



Leaves opposite or whorled, rarely alternate, but then compound. 



Corolla not folded. Trees, shrubs, or undershrubs 657 



657. Leaves provided with stipules or connected at their base by transverse 



lines or ridges, simple, opposite or whorled. Ovules usually numerous. 



198. Loganiaceae.. 



Leaves without either stipules or transverse lines or ridges at their base. 



Ovules 3 — ^4 in each ovary-cell. Disc none. . . . 197. Oleaceae. 



658. (640.) Leaves opposite or whorled 659 



Leaves alternate 662 



659. Leaves provided with stipules or connected at their base by transverse 



lines or ridges. Shrubs or trees 198. Loganiaceae. 



Leaves without stipules, but sometimes connected by transverse lines ; 

 in this case herbs or undershrubs. Stamens 5 660 



660. Corolla with imbricate, not contorted aestivation. Style stigmatose 



at the entire apex. Fruit a berry. Shrubs growing upon trees. 



Deniia/obotrys, 208. Scrophulariaceae. 

 Corolla with contorted aestivation 661 



