SAXIFRAQACE^. (SAXIFRAGE FAMILY.) 55 



Order CALYCANTHACE^, is represented by Cabjcantkus occidentalism Hook. 

 & Am., an erect shrub 6 to 12 ft. high, with opposite entire lanceolate leaves, 3 to 6 

 inches long and large sohtary livid or purplish red flowers; sepals and j)etal3 numerous, 

 linear-spatulate. The common name of the Eastern species — Sweet-Scented Shrub — ia. 

 scarcely applicable to our species. 



Order 22. SAXIFRAGACE-ffi. 



Herbs, shrubs, or small trees, distinguished from BosacecB by albummous seeds; usually 

 by definite stamens, not more than twice the number of the calyx-lobes; commonly by 

 the want of stipules; sometimes by the leaves being opposite; and in most by the partial 

 or complete union of the 2 to 5 carpels into a compound ovary. Seeds usually indefinite 

 or numerous. Petals and stamens on the calyx. Styles inclined to be distinct. Onjy 

 the HydrangiecB have many stamens. 



Tribe 1. SAXIFRAGES. Herbs, leaves mostly alternate and without distinct 

 stipules. Styles or tips of the carpels distinct. Fruit capsular or follicular. 



* Ovary with 2 or rarely more cells, or oj as many distinct carpels. 



Stamens 10, rarely more Saxifraga. 1 



Stamens 5 Boykinia. X 



* * Ovary 1-celled. 



Stamens 10, included Tellima. 3 



Stamens 10, exserted Tiarella, 4 



Stamens 5, and styles 2 Heuchera. 5 



Tribe 2. H YD RANGIER. Shrubs, leaves opposite, simple, no stipules. Fiuit 



capsular. 



A tall shrub. Large white flowers Philadelphus. 6 



Low, scarcely shrubby. Small flowers Whipplea. 7 



Tribe 3. GROSSULARIE.aE3. Shrubs, leaves alternate with stipules adnate to the 



petiole or wanting. Fruit a berry. 

 Calyx-tube adnate to the ovary Ribes. 8 



1. SAXIFRAGA, L. Saxifrage. 



Calyx 5-lobed, free, or its tube coherent with the lower part of the ovary. Petals 5. 

 Fruit of 2 follicles, or a 2-lobed capsule. — In our species stemless; flowers white. 



1. S. Virginiensis, Michx. Leaves thickish, oblong-ovate to spatulate-obovate, 

 coarsely toothed or almost entire, an inch or two long and the margined petiole often as 

 long; scape viscid pubescent, 4 to 12 inches high, at length loosely many flowered in a 

 paniculate cyme; flowers, small white. 



