GUIDE TO PLANT FAMILIES 



XXIX 



(6) Calyx persistent at base. 



Four to eight nutlets. Ilicace^ . . . . 

 Five to ten nutlets. Trailing or depressed 

 shrub. Arctostaphylos in 



Ericace^ . . . . 

 Low evergreen shrub with leaves rolled 

 backwards until the margins meet. 

 Empetrum in 

 Empetrace^ . . . 

 II. Calyx absent. 



Single nutlet. Thymeleace^e . . 



Two to four nutlets of cartilaginous texture. 



RHAMNACEiE . . . 



Page of 



Families and 



Species 



Xli 



XXXVlll 



Typical Dnipes 

 I. Calyx persistent, 

 (a) Calyx teeth or top of tube crowning the summit. 

 Small drupe with usually globose stone. 



CORNACEiE . . . . xl 



One-seeded, flattened or tumid, thin, crus- 

 taceous stone. Viburnum in 



CAPRIFOLIACEiE . . 



Dryish drupe with usually 3 nutlets. 

 Triosteum in 

 Caprifoliace^ . . 

 (6) Calyx persistent at base. 



Drupe borne on fleshy red pedicel. 

 Sassafras in 

 Laurace^ .... 



Drupes in elongated racemes. 



Prunus serotina in 

 Drupace^ .... 



Drupes in loose panicles. Chionanthus in 



Oleace^ .... xlii 



xlii, 

 xliii 



xliii 



XXXVlll 



