PECALIACEX. 'i55 SESAMDM, 



This plant is called Calalpa by the Indians. American trees. Flowers 

 paniculate. Dissepiment of the pod-shaped fruit opposite the valves. 



C. CORDIFO'lIA. Ell. Bignonia Catalpa. L. 



Leaves cordate, smooth, entire ; floicers in panicles. A fine, wide-spreading 

 tree, native in the Southern Stales, but cultivated in man)' places at the 

 North, for ornament and shade. In favorable circumstances, it attains the 

 hight of 50 feet, with adiameter of nearly 2 feet. It exhibits a wide-spreading 

 top, with comparatively few branches, its leaves are beautifully heart shap- 

 ed, and smooth, resembling those of the lilac, but much larger. In color the 

 bark is a light, shining gray. In May it puts fortli blossoms in great profu- 

 sion. Their form is campanulate, color white, with yellow and violet spots. 

 Capsule cylindric, pendent, a foci in length ; seetj wingejd. Catalpa, 



ORDER XC. PEDALIACEiE. The oilseed Tribe. 



Col. — 5-clpft, nearly equal. 



Cor. — Hypoijynous, irregular, tube ventricose, limb 3 — 5-lohed, mostly bilabiate. 



.Sta. — 4 (with the rudiment of a 5th), didynamous. 



Qoa. — 1 — 'i-celled, of 2 carpels. Style 1. Srigj^a divided. 



Fr. — Drupaceous or capsular, often 2 — 4-horned. sometimes with 4 — 8 spurious cells form.- 



ed by ilie divergent lobes of the placenta cohering with the walls of the pericarp. 

 Sds. — Few, large, wingless. 



An unimportant order of herbs with opposite, angled leaves. Flowers axillary. Naliv,es 

 of tropical America, &.c. Some of them have been introduced into the United States. 



Ge7ie7a. 



Corolla 5-lobed. Leaves suborbicular Martynia. 1 



Corolla S-ilobed. Leaves ovate-lanceolate. Sesamum. 2 



1. MARTY'NIA. 

 Calyx 6-cleft:; corolla ringent,; capsule ligneoys, corticate, 

 4-cellcd, 2-valved, each valve terminating in a long hooUed 

 beak. 



Named in honor of Martyn, a distinguished English botanist. Handsome 

 annual herbs, natives of the Middle an4 Southern States. Lvs. palmate- 

 veiped. Fls. disproportionately large. 



M. PROBO'SCIDA. — Stem viscidly pubescent, branched, branches mostly 

 decumbent ; leaves alternate, cordate, suborbicular, entire, villous ; jloiccrs on 

 long, a.xillary peduncles. Native on rive-r banks in i^eiinsylvauia, sometimes 

 cultivated for ornament in our gardens. Stem ]— 2 feet long. Leaves paler 

 beneath. Corolla pale, dull yellow, very large, the limb nearly as broad as 

 the leaves, spotted with brownish purple. Stamens bright yellow, exserted. 

 Aug. Sept. Beaked Martynia. 



Other ornamental species are M. diandra, flowers pink, spotted with 

 pjirple ; and M. lutca, flowers deep yellow. 



2. SE'SAMUM. 

 Calyx 5-parted ; corolla campanulate, S-cleft, the lower 

 lobe the longest; stiji^ma lanceolate; capsule 2-celled, thq 

 cells divided by the inflexed edges of the valves. 



Named from the Arabic, seinsem. Oriental, anntjal herb§. 



