KEY. 201 



528, Leaves without stipules 529 



Leaves with (sometimes minute) stipules, or a con- 

 necting stipular membrane (which are often furnished with 

 bristles) 530 



599. Leaves whorled, in fours, sixes, or eights (rarely in 

 fives). Corolla wheel-shaped, 4-cleft. Styles 2. Ovary 

 2-celled. Fruit dry, or fleshy, globular, twin, separating, at 

 maturity, into two 1-seeded, indehiscent nutlets. Stems 

 4-angled. Herbs. (276) Galium (645). 



Leaves opposite. Calyx-tube globose, limb 4- (or 5-) 

 toothed. Corolla funnel or bell-shaped, the border 4- (or 5-) 

 lobed. Stigma capitate. Berry globose, 2-seeded, snow- 

 white, or rarely dark red. (^1^) Symphoricarpus. 



530. Flowers one to each ovary. Fruit dry 531 



Flowers 2 on each double ovary, fragrant. Calyx 

 4-parted. Corolla funnel-form, white, tinged with purple 

 within. Stigmas 4. Fruit red, a berry-like double drupe, 

 crowned with the calyx-teeth of the 2 flowers, each contain- 

 ing 4 nutlets. Evergreen herbs, smooth, trailing. 



Mitchella repens, L. 



531. Ovules, or seeds, solitary in each cell. Flowers 

 small, w^hite. Stipules fringed with bristles 532 



Ovules, or seeds, many or several in each cell of 

 the 2-celled ovary, or pod. Stipules small, united to the 

 petioles 533 



532. Flowers in dense axillary sessile clusters. Corolla 

 scarcely exceeding the calyx; throat bearded. One of the 

 2 carpels dehiscent. Glabrous, spreading herbs. 



Spermacoce glabra, Mx. 



Flowers 1-3 in each axil. The 2 carpels of the 



fruit indehiscent. Stem hairy, or smooth. JDiodia. 



533. Seeds angular, minute, very numerous in each cell. 

 Pod completely enclosed in the calyx-tube. Corolla wheel- 

 shaped, white, much shorter than the calyx. Anthers short. 

 Stems branched, spreading, pubescent. Leaves oblong. 

 Flowers in sessile, axillary clusters. 



(515) Oldeulandia glomerata, Mx. 



Seeds saucer-shaped, -with a ridge down the middle 



of the concave inner face, rather few in each cell (4-20). 



Pod partly included. Corolla salver- or funnel-form, purplish. 



