320 BIGNONIACE.E. Chilopsis. 



Bot. Mag. t. 1094; Pursli, Fl. i. 10. Bi<jnonia Catalpa, L. (excl. syn.); Catesb. Car. i. 

 t. 49; Mifhx. f. Sylv. ii. 64. — River banks, S. Illinois to Georgia, W. Florida, and Louis- 

 iana. Cult, north to New England. 



4. CHILOPSIS, Don. {XeTlOi,', lip, and oxpig, resemblance; nantie of no 

 particular application.) — Single species. 



C. Saligna, Don. Shrub or low tree, 10 to 20 feet high, with hard wood, pubescent 

 wlien young, soon glabrous : branches slender : leaves linear or linear-lanceolate, 4 to 

 inches long, of firm texture : lower leaves often opposite or verticillate : flowers in a short 

 terminal raceme : corolla an inch or two long, white and purplish : capsule G to 10 inches 

 long. — Edinb. Piiil. Jour. ix. 2G1 : G. Don, Syst. iii. 228; Gray, Bot. Calif, i. 587. C. 

 linearis, DC. Prodr. ix. 227. Bi(/nonia linearis, Cav. Ic. iii. 35, t. 209. — Water-courses in 

 dry districts, S. Texas to S. California. (Mex.) 

 Crescentia Cujete, L., the Calabash tree of the West Indies, the type of an anomalous 



tribe of this order, with indehiscent cucurbitaccous-like fruit, has been introduced on the 



Keys of Florida, and in consequence has been figured by Nuttall, Sylv. iii. t. 103; but it 



has no claim to a place in our flora. 



Order C. PEDALTACE^. 



Herbs, with mucilaginous or watery juice, chiefly opposite simple leaves, and 

 flowers as of the preceding order (to which it has more usually been annexed), 

 except in the structure of the ovary and fruit. Ovary either one-celled with two 

 parietal intruded placentas expanded into two broad lamellae or united into a 

 central columella, or variously 2-4-celled by the extension of the placentiB and by 

 spurious partitions from the wall. Fruit capsular, drupaceous, or nucumentaceous, 

 few-many-seeded. Seeds wingless, mostly with a thick and close coat, filled by 

 the large embryo ; the cotyledons thickish. — A small extra-European and mainly 

 African order, or suboi'der, of warm climates, rejjresented in the United States by 

 one sparingly naturalized, and one or two jirobably indigenous species. 



1. SESAMUM. Calyx herbaceous, 5-parted, persistent. Corolla ventricose-campanulate 

 or funnclform ; limb bilabiately 5-yiarted, spreading; uj)per lobes smaller. Stamens didy- 

 namous : antlier-cells ])arallel. Stigmas linear. Fruit an oblong quadrangular and 4-sul- 

 cate capsule, septicidal at summit, spuriously 4-celled, a false jjartition fnjm the dorsal 

 suture of each of the two carpels reaching tiie columnar placenta at tlie centre. Seeds 

 numerous in a single series in each half-cell. 



2. MARTYNIA. Calyx 1-2-bracteolate, meml)ranaceous, somewhat bladdery-campanu- 

 late, 5-cleft, sometimes splitting anteriorly to base, deciduous. Corolla ventricose-funnel- 

 form or campanulate, somewliat oblique or decurved ; tlie lobes of tiie bilabiately 5- 

 parted limb broad, somewhat undulate, siiglitly unequal. Stamens 4, strongly didynamous, 

 or sometimes only the anterior pair antlieriferous : anthers tipped by a gland; the cells 

 divaricate. Stigma T)ilaniellar. Ovary onc-eelletl, witli two parietal ])lacenta; which 

 meet in the axis and tliere diverge in broad lanu'lhe, bi'aring single or double rows of 

 ovules. Fruit fleshy-drupaceous, tapi'riug into an incurved beak: fleshy exocarp at 

 maturity 2-valved and deciduous: endocarp fibrous-woody, scrobiculate, cristate at the 

 sutures, 2-valved through the slender beak to the summit of the cells, indehiscent below ; 

 the cavity by the extension of the placentae to tlie walls 4-locellate, and witli a small 

 empty central cavity. Seeds rather numerous, oblong, large, with a tliiek and somewliat 

 spongy tuberculate-rugose coat. Cotyledons obovate, fleshy : radicle very short. 



1. SESAMUM, L. Benk, Oil-plant. (From the Arabic semseu.) — 

 Chiefly African annuals ; the following widely dispersed through cultivation. 



S. Indicum, L. Somewhat pubescent annual, 1 to 3 feet high, with mucilaginous juice and 

 oily seeds : leaves ovate-oblong or lanceolate, petioled ; lower often 3-lobed or divided : 

 corolla white or tinged with rose, inch long: capsule velvety-pubescent. — Bot. Mag. 



