74 RHAMNACE^. (BUCKTHORN FAMILY.) 



3-seeded. (Rhamnus Carolinianus, Walt.) — Banks of rivers, 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 

 connivent, deciduous. Petals 5, longer than the calyx, hooded, long-clawed. 

 Stamens exserted. Style 3-parted. Drupe dry, 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, 

 Florida to Mississippi, and northward. July. — Plant shrubby, l°-2°high. 

 Leaves 3-ribbed, varying from f (C. Intermedius, Ell.) to 3' long, often nearly 

 smooth (C. herbaceus, Raf.). Flowers and pedicels white. 



2. C. microphyllus, Michx. Stem erect, diff'usely much-branched ; 

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

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

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

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

 Drupe black. 



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

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

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

 corj-mbose head. — Near St. Mary's, Georgia. — Leaves 3" -5'' long. Pe- 

 duncles 12-15-flo\vered. 



7. COLUBRINA, Rich. 



Calvx herbaceous, with spreading lobes. Nutlets opening at the apex and 

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

 anothus. — Tropical shrubs, with alternate parallel-veined leaves, and small 

 flowers in close axillary cymes. 



1. C Americana, Nutt. Leaves coriaceous, ovate-oblong, entire, tiie 

 lower surface, as also the branches and calyx, covered with a dense rust-colored 

 pubescence ; cyme small, shorter than the petiole ; petals spatulate, emarginate, 

 shorter than the calyx ; drupe 3-lobed. — South Florida. — Leaves 2' - 4' long. 

 Drupe 4" in diameter. 



8. GOUANIA, Jacquin. Ch.4^wstick. 



Calyx 5-cleft, partly adnate to the ovary, the lobes spreading. Petals 5, 

 shorter than the calyx, and inserted into the sinuses of the 5-lol)ed disk which 

 lines its tube, hooded, and enclosing the short stamens. Ovary 3-cclled, 3-ovuled. 

 Style 3-clcft. Drupe dr}', 3-lobed or 3-winged, separating from the central axis 



