14 DIALYPETALOUS EXOGENS 



inches in length. Scape 4 to 6 or 8 inches high, 1-flowered; flower white, rather 



large. 



Hob. Rich woodlands : common. Fl. April. Fr. June. 



Obs. The rhizoma possesses emetic and other medicinal properties, 

 which have been favorably spoken of by respectable physicians. 



ORDER IX. FUMARIACEAE. 



Herbs ; smooth, glaucous and delicate, with a watery juice ; leaves compoundly dis- 

 sected ; stipules none ; flowers irregular ; petals 4, somewhat united ; stamens >, 

 diadelphous ; fruit and seeds much resembling those of some Papaveraceae. 



t Capsule slender, siliquose, opening ly 2 valves. 



24. ADL.IPMIA, Rafin. 



[Dedicated to Major John Adlum, a zealous American cultivator of the Tine.] 

 Sepals 2, deciduous. Petals cohering in an ovate-oblong corolla, 

 bigibbous at base, withering-persistent and spongy, including the 

 silique-like capsule. Seeds not crested. 



1. A. cirrliosa, Rafin. Stem slender, climbing by means of the 

 tendril-like petioles ; leaves tripinnately dissected. 

 CIRRHOSE AIXLUMIA. Climbing Fumitory. 



Biennial. Stem 8 to 15 or 20 feet long, branching and climbing. Leaves 4 to 6 

 or 8 inches long, loosely dissected or branched, the common petiole twining like a 

 tendril. Flowers in compound axillary racemes; corolla, pale violet-purple, or 

 flesh-color, finally a dirty white, and of a fungous texture, including the stamens 

 and capsule. 

 Hob. Thickets; West Brandy wine: rare. Fl. July. Fr. Aug. 



Obs. This is often and deservedly cultivated, as a delicate orna- 

 mental climber, over arbors, &c. 



25. mCEWTRA, Borkh. [DICLTTRA. DC.] 



[Gr. Dis, double, and kentron, a spur; in allusion to the flower.] 

 Sepals 2, small and membranaceous. Petals connivent, but scarcely 

 united, deciduous, the 2 outer ones spurred or gibbous at base. 

 Filaments slightly united. Capsule siliquose. Seeds with a lateral 

 crest. Tuberous-rooted, stemless perennials ; leaves radical, ternately 

 multifid ; flowers racemose, on simple scapes. 



1. D. II cull Aria, DC. Root granulate-bulbous ; raceme 4- to 

 10-flowered; spurs divergent, straight, rather acute, longer than 

 the pedicel ; inner petals minutely crested. 



Dielytra Cucullaria. Hook. $ Fl. Cestr. ed. 2. p. 398. 

 HOOD-LIKE DICENTRA. Dutchman's Breeches. Breeches-flower. 



Bulbs usually trigonous-ovoid and acuminate, pale red and purple-dotted, eur- 

 rounded at base by smaller 'ones. Scape 6 to 10 inches high, slender, naked. 

 Flowers white, yellowish or cream-color at apex, destitute of fragrance. 

 Hob. Moist shaded grounds : frequent. Fl, April. Fr. May. 



Obs. The name of this genus seems to have been written Dielytra, 

 and Dielytra, by different authors, in consequence of a typographical 

 error, resulting from a misconception of the original manuscript, in- 

 tended for Dicentra. 



2. D. CanaclensiS, DC. Root tuberiferous; raceme about 

 4-flowered; spurs nearly parallel, incurved, obtuse, short; inner 

 petals conspicuously crested. 



