210 CALYCJ FLORAE. 



a wash or gargle, in cases of salivation or disease of the gums. 

 The principal use to which the Chaw-stick is applied, however, 

 is as a substitute for the tooth-brush itself. For this purpose, 

 the extremity of a piece of a branch, which is usually about the 

 thickness of the little finger, is softened by chewing, and then 

 rubbed against the teeth. In this manner a tooth-brush and, 

 with it, a powder are obtained, equal, if not superior, to any 

 in use in Europe. 



CEANOTHUS. 



Calyx 5-fid, bell-shaped ; the base under the fruit 

 persistent and sub-adhering. Petals 5, small, with a 

 long claw, hooded, seldom O. Stamens 5, exserted, 

 before the petals. Styles 2-3, united as far as the 

 middle. Berry juiceless, 3- rarely 2- or 4-locular, 

 with chartaceous coccules, 1 -seeded, pervious at the 

 base, bursting on the inner side : seeds ovate. 



Trees or shrubs ; leaves ovate. Name, from xsavodoc, derived 

 from xsu to prick, the name of a prickly plant, noticed by 

 Theophrastus. 



1. Ceanothus sarcomphalus. Sea-side Buckthorn. 



Leaves ovate or oval glabrous very entire obtuse or 

 emarginate, peduncles terminal or axillary shorter 

 than the leaf racemoso-corymbose. 



Sarcomphalus, Brown, Jam. 179. Rhamnus sarcomphalus, 

 Linn. Amcen. V. 395 Kunth,Nov. Gen. Am. VII. 57 Poiret, 

 Enc. Meth. IV. 467. Ceanothus sarcomphalus, De Cand. Prod. 

 II. 30. 



HAB. Common, between Kingston and Albion, on the Wind- 

 ward road. Near Hanson's Salt Pond. 



FL. April. 



About 15 feet in height: branches erect, terete ; the bark 

 brownish-black, and, to the touch, scabrous. Leaves alternate, 

 shortly petiolate, glabrous, membranaceous, slightly emarginate. 

 Panicle axillary or terminal, cymose. Flowers small, greenish 

 yellow, very shortly pedicelled. Peduncles and pedicels mi- 

 nutely puberulous. Calycine segments acute. Petals scarcely 

 broader than the filaments which lie in their embrace. Disk 

 fleshy, surrounding the ovary. Style 2-fid. Berry rounded, 

 bilocular : seeds solitary, hemispherical. 



2. Ceanothus sphaerocarpus. Round-fruited Jamaica 



Buckthorn. 

 Leaves oblong acuminate serrated glabrous, pedun- 



