SAXIFEAGACE^. (SAXIFRAGE FAMILY.) 55 



Order CALYCANTHACE^, is represented by Cahjcantlms occidentalls, Hook. 

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

 inches long and large solitary livid or purplish red flowers; sepals and petals numerous, 

 linear-spatulute. The common name of the Eastern species — Sweet-Scented Shrub — is 

 scarcely applicable to our species. 



Order 22. SAXIFRAGACEiE. 



Herbs, shrubs, or small trees, distinguished from Hosacece by albuminous 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 pai'tial 

 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. Only 

 the II >jdrangle(& 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. 2 



* * Ovary 1-celled. 



Stamens 10, included Tellima. 3 



Stamens 10, exserted Tiarella. 4 



Stamens 5, and styles 2 Heuchera. 5 



Tribe 2. HYDRANGIBS. Shrubs, leaves opposite, simple, no stipules. Fruit 



capsular. 



A tall shrub. Large white flowers Philadelphus. 6 



Low, scarcely shrubby. Small flowers Whipplea. 7 



Tribe 3. GROSSULARIES, 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. 



