74 rhamnacejK. (buckthorn family.) 



3-6ecdcil. (Khamnus Carolinianus, Wall.) — Banks of rivers, Florida to North 

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



6. CEANOTHUS, L. Jkrsky Tea. 



Calyx colored, 5-elcft, with the tube adnate to the ovary and pci-sistent, the lobes 

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

 Stamens exserted. Style 3-partcd. l)ru])C dry, composed of three 2-valvcd 

 1-seeded nutlets. Embryo in fleshy albumen. Cotyledons flat. — Shiuhhy jilants, 

 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, pctioled ; peduncles elongated, mostly 2-leaved above. — Dry woods, 

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

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

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



2. C microphyllus, Michx. Stem erect, diflFusely 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 

 10-2° high, yellowish. Leaves 2"- 3" long. Pedicels an(> flowei-s white. 

 Drupe black. 



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

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

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

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

 duncles 12 -15-flowcrcd. 



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 Ce- 

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

 flowers in close axillary cymes. 



1. C. Americana, Nutt. Leaves coriaceous, ovatc-oblong, entire, the 

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

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

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

 Drupe 4" in diameter. 



8. GOUANIA, Jacquin. Ciiaw-stick. 



Calyx 5-cloft, partly ndnnte to the ovary, the lol>os spreading. Petals 5, 

 shorter than the calyx, and inserted into tlic sinuses of the 5-iobed disk which 

 lines its tube, lioodfd, and enclosing the short stamens. Ovary 3-ecIled, 3-ovulcd. 

 Style 3-cleft. Drujie dry, 3-lobcd or 3-wiuged, separating from the central axis 



