ORDER 41. V1TACEJS. 77 



2. BERCHEMIA, Necker. SUPPLE JACK. Calyx 5-partcd Pet. 5, 

 convolute, enclosing the 5 stamens. Ovaiy half immersed in the disk, but 

 tree from it, 2-cellecl. Style bifid. Drupe oblong, with a bony, 2-celled 

 nut. 5 *> Unarmed. Lvs. pinnate-veined. Panicles terminal, small. 

 It. vo lii bills DC. Climbing, glabrous; Ivs. ovate, straight-veined, repandly Ferrate ; 

 drupe dark purple. Damp soils, S. Stem supple, 10 20f. May, June. 



4. CEANOTHUS, L. JERSEY TEA. RED-ROOT. Calyx tubular-cam- 

 [mnulale, 5-cleft. Petals 5, saccate, arched, with long claws. Sta. mostly 

 exserted. Style 3-clefL Capsule obtusely triangular, 3-celled, 3-seeded, 

 sunouuded at base by the persistent tube of the calyx. > J> Thornless. 

 Fls. small, aggregated at the end of the branches. 



1 C. Amerlcanus L. Leaves oblong-ovate, or ovate, serrate, 3-veined; flowering 



branches leafy or leafless, elongated. Dry woods. 2 4f. June. 

 ! C. o valla Bw. Lvs. oval-lanceolate or narrowly oblong, with glandular serratures, 



3-veined, veins pubescent beneath ; thyrse corymbous, abbreviated. Vt. to Mich. 



2 3f. Less common than No. 1. Lvs. smooth, shining. May. 

 3 C. mioropliylliiN MX. Diffusely branched, branches very slender; leaves minute. 



obovate, rigid, glabrous, strigons beneath. Pine-barrens, S. 1 2f. April. 

 /3. ttrpyllifoliu*. Very slender ; branches filiform; Ivs. oval (2 3" long). S. 



5. RHAMNUS, L. BUCKTHORN. (The Greek name.) Calyx urceo- 

 late, 4 or 5-cleft. Pet. 4 or 5, notched, lobed, or entire, or sometimes want- 

 ing. Ov. free, not immersed in the thin torus, 2 4-celled. Styles 2 4, 

 more or less united. Drupe containing 2 4 cartilaginous nuts. J> Lvs. 

 alternate, rarely opposite. Fls. in axillary clusters. 



Flowers tetrameroua. Leaves with arcuate veinlets Nos. 1, 2 



Flowers pentamerous. Leaves with the veinlets nearly straight Nos. 3, 4 



1 If. cathartlcns L. Thorny; Ivs. ovate, denticulate-serrate; fls. fascicled: poly- 



gamo-dicecious, mostly tetrandrous ; sty. 4. at apex distinct and recurved : fr. globu 

 lar, 4-seeded. Hedges, rarely wild. 10 15f. Drupes black, cathartic. May +. Eur. 



2 R. Ianceola.tus Ph. Thornless ; Ivs. lanceolate or oblong, acute at each end, the 



earlier ones obtuse ; fls. 13 together ; pet. 4, minute ; sty. 2 at apex, distinct ; drupe 

 2-seeded. Pa. to Iowa (Colman). Rare. 4 8f. May. 



3 R. alnifolius L'Her. Unarmed ; Ivs. oval, acute, serrate ; ped. aggregate, 1-flow- 



ered ; fls. mostly pentandrous and apetalons ; sep. acute ; styles 3, united, very short; 

 fruit 3-seeded. Pa. to Can. 2 4f. June. 



4 R. Carolinlanus Walt. Unarmed ; leaves oblong-oval, serrulate, acute, paler be- 



neath ; fls. perfect, in short, axillary umbels, petals minute ; stigmas 3 ; fr. 3-seeded. 

 River banks, Va. to Fla. 7 15f. June. 



ORDER XLI. VITACE^. VINES. 



Shrubs with a watery juice, tumid nodes, and usually climbing by ten- 

 drils. Flowers small, regular, racemous, often polygamous or dioecious. 

 Calyx minute, truncated, the limb obsolete or 5-toothed. Petals hypogy- 

 nous, valvate in aestivation, as many as and opposite to the stamens. 

 Stamens inserted on the disk which surrounds the 2-celled, 1-styled ovary. 

 'Fruit a berry, usually 4-sueded. Seeds bony. Albumen hard. Figs. 187, 250. 



VrnS, L. GRAPE-VINES. (Celtic gwyd, a tree or shrub.) Petals 4 01 



