RHAMJSTACE.E. (BUCKTHOKN FAMILY.) 77 



nutlets. Raphe dorsal. Cotyledons leafy, revolute. Shrubs, with alternate 

 stipulate finely -veined leaves, and small axillary clustered polygamous or 

 dicecious greenish flowers. 



1. R. lanceolatus, Pursh. Leaves oblong-lanceolate, acute, or those of 

 the flowering branches oblong and obtuse, serrulate; flowers clustered, on 

 short pedicels, with long styles, or the more fruitful ones scattered on 

 longer pedicels, and with short styles ; petals emarginate ; drupe 2-seeded ; 

 seeds grooved. Hills and river banks, in the upper districts, Alabama and 

 northward. Jime. A tall shrub. Drupes black, as large as a grain of 

 pepper. 



2. R. Carolinianus, Walt. (CAROLINA BUCKTHORN.) Leaves oblong, 

 wavy and finely serrulate on the margins, the slender petioles and many-flow- 

 ered short-stalked umbels pubescent; petals 5, minute; stigmas 3; drupe 

 globose, 3-seeded ; seeds even. Fertile soil, Florida to North Carolina, and 

 westward. June. A shrub or small tree. Leaves 3'- 4' long. 



6. CEANOTHUS, L. JERSEY TEA. 



Calyx colored, 5-cleft, with the tube adnate to the ovary and persistent, the 

 lobes counivent, deciduous. Petals 5, longer than the calyx, hooded, long- 

 clawed. Stamens exserted. Style 3-parted. Drupe drv, composed of three 

 2-valved 1-seeded nutlets. Embryo in fleshy albumen. Cotyledons flat. 

 Shrubby plants, with alternate serrulate minutely stipulate 3-ribbed leaves, 

 and small flowers in lateral and terminal corymbs or panicles. 



1. C. Americanus, L. Branches pubescent ; leaves deciduous, variable 

 in size, ovate or ovate-lanceolate, acute or obtuse, sharply serrate, more or 

 less pubescent, petioled ; peduncles elongated, mostly 2-leaved above. Dry 

 woods. July. Plant shrubby, l-2 high. Leaves 3-ribbed, varying from 

 3' (C. intermedius, Ell.) to 3' long, often nearly smooth (C. herbaceus, Raf.). 

 Flowers and pedicels white. 



2. C. microphyllus, Michx. Stem erect, diffusely much-branched; 

 leaves perennial, small, obovate, .slightly crenate, 3-ribhed, glossy above, with 

 scattered hairs beneath; those in the axils clustered ; corymbs small, terminal. 

 Dry barrens, Florida and Georgia, and westward. April -May. Shrub 

 l-2 high, yellowish. Leaves 2" -3" long. Pedicels and flowers white. 

 Drupe black. 



3. C. serpyllifolius, Nntt. Decumbent, diffusely branched ; branches 

 filiform ; leaves very small, ovate elliptical, serrulate, obtuse, the lower sur- 

 face, as well as the petioles, strigose ; peduncles axillary ; flowers few, in a 

 simple corymbose head. Near St. Mary's, Georgia. Leaves 3"- 5" long. 

 Peduncles 12-15-flowered. 



7. COLUBRINA, Rich. 



Calyx herbaceous, with spreading lobes Nutlets opening at the apex and 

 down the inner angle. Embryo in thin albumen. Otherwise chiefly as in 

 Ceanothus. Tropical shrubs, witli alternate parallel-veined leaves, and 

 small flowers in close axillary cymes. 



