56 SYMPETALAET 



625. Seeds borne on a hook-like outgrowth of the funicle, exalbuniinoüs. 



216. Acanthaceae. 

 Seeds not on a hook-like outgrowth of the funicle, albuminous. 



208. Scrophulariaceae. 



626. (622.) Fertile stamens 4 627 



Fertile stamens 5 — 30 634 



627. Corolla with 4 divisions. 628 



Cor-olla with 5 divisions. 632 



628. Flowers more or less irregular. Seeds exalbuminous. Leaves opposite 



or whorled, without stipules. . . . . . . 216. Acanthaceae. 



Flowers regular. Seeds albuminous 629 



629. Corolla scarious, regular. Stigma entire. Fruit opening by a lid. Leaves 



sessile Plantago, 218. Plantaginaceae. 



Corolla not scarious 630 



630. Leaves alternate. Styles or stigmas 2. Ovules erect 



202. Convolvulaceae. 

 Leaves opposite or whorled. Shrubs or trees. 631 



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



lines or ridges 198. Loganiaceae. 



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



197. Oleaceae. 



632. Leaves alternate, at least the upper ones. Flowers regular or nearly so. 



Corolla white. Stigma entire or 4-lobed. Fruit a drupe. Seeds 



albuminous 217. Myoporaceae. 



Leaver opposite or whorled, rarely the upper ones alternate, but then 

 flowers irregular, stigma 2-partite and fruit a capsule or nut. . . 633 



633. Seeds with scanty albumen. Plants with glandular hairs. 



210. Pedaliaceae. 

 Seeds without albumen 216. Acanthaceae. 



634. (626.) Stamens 5 635 



Stamens 8 — 30 639 



635. Style (or styles) stigmatose beneath the thickened and sometimes 2-lobed 



apex. Corolla with contorted aestivation. . . 200. Apocynaceae. 

 Style (or styles) stigmatose at the apex or between the apical lobes. 036 



636. Leaves opposite or whorled, stipulate or connected by transverse lines 



or ridges. Shrubs or trees. ....... 198. Loganiaceae. 



Leaves alternate O37 



637. Ovules erect. Corolla lobed or nearly entire, usually folded in bud. 



202. Convolvulaceae. 



Ovules pendulous. Styles or stigmas 2. Corolla lobed, but imbricate 



in bud, or deeply divided. vShrubs or trees. . . . . . 638 



638. Leaves stipulate. Flowers in axillary cymes or panicles. Fruit a drupe. 



Dichapetaliim, 121. Dichapetalaceae. 

 Leaves exstipulate. Flowers in terminal spikes or heads. Fruit a capsule. 



Lonchostoma, 100. Bruniaceae. 



