KAXIFKAOACE^. (SAXIFKAGE FAMILY.) 65 



Order CALYCANTHACE-SJ, is represented by Calycanthus occ'ulentalis, IIooli. 

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

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

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

 scarcely applicable to our species. 



Ordee 22. SAXIFRAGACEiE. 



Herbs, shrubs, or small trees, distinguished from Hosacecs 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 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. Only 

 the Hydrangiece 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 vnth 2 or rarely more cells, or oj as many distinct carpels. 



Stamens 10, rarely more Saxifraga. 1 



Stamens 5 Boykinia, 2 



• * Ovary l-celled. 

 Stamens 10, included Tellima. 3 



Stamens 10, exserted Tiarella. 4 



Stamens 5, and styles 2 Heuchera. 5 



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



capsular. 

 A tall shrub. Large white flowers Philadelphus. 6 



Low, scarcely slirubby. Small flowers Whipplea. 7 



Tribe 3. GROSSULARIE-ai. 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 & 

 Fruit of 2 follicles, or a 2-lobcd capsule. — Li our spe'cies stemless; flowers whitp» 



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 sk 

 paniculate cyme; flowers, small white. 



