^88 TENTANDRIA MQNOGYNIAt 



3. Tenax. 



B. spinosa ; foliis cu- f Spiny ; leaves wedge 

 neato-lariceolatis, pie- | shaped lanceolate, fre- 

 rumqiie obtusis, subtiis quently obtuse, silky uii- 

 sericeo-aitentibus. | derneath. ■ 



Bumelia tcnax. Sp. pi. 1. p. 1085. 



—_ chrysophjlloides, Pursh, 1. p. 155. 



Sideroxylon chrysophylloides, Mich. 1. p. 125, 



sericeum, Walt. p. IQO. 



A small tree sometimes 20 — 30 feet high ; young branches slender^ 

 straiy;!it, flexible, and, as in all of the species, very difficult to break. 

 The Flojvers, also the mode of flowering and the drupes are similar in 

 all. The Imves in this species are clothed on the urlder surface witk 

 a soft, white, silky down. Drupes oval. 



Grows in dry sandy soils. 



Flowers June — ^July. 



4. Lanuginosn. Mich. 



B- spinosa ; ramulis I Spiny ; branches ex- 

 patentissimis, pubescen- f panding, pubescent j 

 tiljus ; foliis ovali-hmceo- leaves oval lanceolate. 



lali 



woolly on the under 

 face. 



Pursh, 1. p. 155. 



Walt 



Mich 



Smaller than the preceding species. Leaves frequently obtuse obc. 

 vate, clothed with a ferruginous down on the under surface. Drupes- 



globose. 



Grows in light soils. 

 Flowers June — July. 



RHAMNUS.' Gen. PK 358. 



Calyx tubulosu's. Co- ] Calyx tubular. Scalesr 

 rofe squamsB stamina of the corolla protecting 

 munientesjcalyciinsertae. the stamens, inserted into 

 ^Bacca 3— 4 spenna, | the calyx. Berry 3—'* 



i seeded. 



