28 ANALYTICAL KEY. 



B, Stamens having anthers as many as eorolla-lobcs and opposite them. 

 Ovary I-celled. 



Capsule cc-ovuled : style 1. Primulace^, 515 



Utricle 1-seeded : styles 5 or 1 with 5 stigmas. .... Plumbaginea:, 510 



C. Stamens as many as corollorlobes, alternate with them, or fewer. 

 1 . Ovary adherent to calyx-tube, i.e., inferior. 



Tendril bearers, anthers sometimes united. Cucurbitace^, 322 



Tendrils 0. 

 Anthers syngenesious. 



Filaments separate : flowers axillary. Ecballium, 324 



Filaments separate : flowerets in involucred heads. . . . . Composite, 405 

 Filaments more or less united : flowers scattered, bilabiate, . . Lobehacejs, 501 

 Stamens separate. 



Free from corolla. Campanulace.*:, 501 



Implanted on corolla. 

 Less in number than corolla-lobes. 



Corolla funnel-shaped, VALERiANACEie, 894 



Corolla bilabiate. Morina, 399 



2-5, usually as many as corolla lobes. 



Flowers usually in an involucred head Dipsaceje, 399 



Flowers in cymes or panicles. 

 Leaves opposite, exstipulate and entire, or stipulate and 



pinnate Cafrifoliace.e. 378 



Leaves whorled, exstipulate, or opposite, stipulate. . . Rubiacewe, 379 



1 . Ovary free from calyx, i.e. superior. 

 * Corolla irregular : stamens with anthers only 4 or 2. 

 Ovules 1 in each cell : cells 1-4. 



Ovary 1-celled : inflorescence globular GLOBULARiEJi, 608 



Ovary 4-lnbed. Aromatics with labiate flowers. Labiatje, 611 



Ovary 9-4-celled, not lobed. VERBENACE.aj, 609 



Ovules numerous, or at least 2 in each cell. 

 Ovary and capsule 1-celled. 



Herbs without leaves, parasitic. Orobanchace^, 601 



Herbs, aquatic or marshy, with dissected leaves. . . . LsNTiBULARiEai, 605 

 Ovary and capsule 2-celled : placentae central. 



Seeds few, borne on hook-like processes. Acanthacejj, 606 



Seeds many or few, not on hook-like processes. . . . Scrophulariaceje, 5/1 



Ovary and capsule incompletely 4-celled Fedahne^, 606 



* * Corolla slightly irregular : fertile stamens 5. # 



Filaments, or some of them, woolly : fruit a 2-celled capsule. . . Verbascum, 573 



Filaments not woolly. 



Fruit a 2-celled capsule. Hyoscyamus, 570 



Fruit 4 nucules : style arising from their midst Echium, g50 



* * * Corolla nearly or quite regular. 

 f Stamens as many as corolla-lobes. 

 Ovaries 9, united by styles or stigmas in flower, separate in fruit. 

 Filaments separate : pollen granular. . . . . . . Apocynaceje, 521 



Filaments usually 1-adelphous : anthers adherent to stigma ; pollen 



in masses. ......... AscLEPiADEiB, 523 



Ovary 1, divided into 4 lobes around the style Borraginej;:, 529 



Oyary 1, not divided or lobed. 



1-celled : fruit a pod or capsuled Mimose.*:, 211 



Style 1, stigma 1 : fruit a pod. 



Style 1, stigmatose on 2 lines : pyxis incompletely 4-celled. . . Plantago, 667 



Styles, stigmas, or parietal placentae 9 GrENxiANEJi, 528 



Styles : stigmas 2-lobed : fruit a small drupe Salvadorace^, 521 



2-10-celled, style 1 : partitions sometimes not found in fruit. ^ 



Stamens distinct irom corolla or nearly so. Linejj, 181 



Stamens inserted on corolla. 

 4 : corolla scarious : capsule imperfectly 4-celled Plantago, 667 



