DIDYXAMIA ANG10SPERMIA 363 



Trees : leaves simple, without stipules, opposite, or verticillate in threes ; flow- 

 ers in terminal panicles. Nat. OrcL 217. Lindl. Biqnoniace*. 



I. C. cordifolia, Duham. Leaves cordate, acuminate, entire, peti- 



olate; flowers paniculate. Beck, Bot. p. 245. 



C. syringcefolia. Ait. Kew. 1. p. 24. Pttrsh, Am. 1. p. 10. Lindl. 



* B^gnonfa Catalpa. Marsh. Arbust.p. 21. Willd. Sp. 3. p. 289. Mx. 

 Am. 2. p. 25. Per 8. Syn. 2. p. 170. Muhl. Catal. p. 58. Mx. f. 

 Sylva, 2. p. 63. Icon, tab. 64. 

 Heart-leaved Catalpa* Fu/jo— Catawba. Bean tree. 



Stem 15 to 20 or 25 feet high, with irregular spreading branches. Leaves 4 

 to 6 or 8 inches in length, and nearly as wide as long, opposite, or disposed in 

 threes, cordate, with a slender acumination, smooth above, somewhat pubescent 

 beneath, especially along the nerves and veins; petioles 2 to 6 inches long, terete, 

 striate, smooihish. Flowers in terminal pyramidal panicles, withtrichotomous 

 branches. Calyx-segments obovate, mucronate. Corolla whitish, tinged with 

 violet-purple, the throat spotted with purple and yellow ; lobes unequal, crcnate 

 and waved. Stamens mostly 2 fertile, and 1 or 2 abortive (sometimes perfectly 

 didynamous). Capsule 6 to 9 or 12 inches long, and about half an inch in diameter, 

 resembling a long silique, pendulous, persistent. Seeds lance-oblong, about half 

 an inch in length, apparently of 2 flat oval divaricate lobes which are confluent 

 at base, with a membranous covering which is extended at the margin, and especi- 

 ally at the apex,— each apex tcwmiuaing in a slender filamentous tuft, or fringe. 

 Hab. Foot of the N. Valley hill : not common. Fl. June— July. Fr. October. 



Obs. This tree occurs in the above locality, and about several old settlements ; 

 but I should judge it to have been introduced here. It is the only species in the U. 

 States. 



294. GRATIOLA. L. JYutt. Gen. 14. 

 [Latin, Gratia, grace, or favor; from its supposed medical virtues.] 



Calyx deeply 5-partcd, mostly with 2 bracts at base. Corolla tubu- 

 lar, irregular, sub-bilabiate ; upper lip emarginate, or bifid ; lower lip 

 nearly equally 3-lobed. Stamens 2 fertile, and mostly 2 abortive ones. 

 St iff ma 2-lobed. Capsule ovoid, subcompressed, 2-celled, 2-valved ; 

 dissepiment contrary to the valves. Seeds numerous, minute. 



Herbaceous: leaves opposite; peduncles axillary, solitary, 1-flowered. Xat- 

 Ord. 211. Lindl. ScrophularinejB. 



1. G. virginica, L. Stem assurgent, terete, somewhat pubescent; 

 leaves lance-oblong, and obovate-lanceolate, rather obtuse, sparingly 

 dentate-serrate, smooth, narrowed at base, sessile; sterile filaments none. 

 Beck , Bot. p. 265. Not of Ell. 



Virginian Gratiola. Vulgd — Hedge Hyssop. 



Root perennial ? coarsely fibrous. Stem 4 to 8 or 10 inches long, decumbent, or 

 oblique, branching, especially at base, more or less pubescent above, often smooth 

 below. Leaves 3 fourths of an inch to an inch and half long, and 1 third to 2 thirds 

 of an inch wide, varying from lance-oblong to elliptic and obovate-lanceolate, or 

 simulate, mostly obtuse, dentate- serrate above the middle, often nearly entire, 

 or obsoletely repand-denticulate, narrowed at base, smooth, nerved, sessile and 

 ampleaicaul, or subconnate. Peduncles half an inch to an inch long, slender, 



