D1ADELPHIA HEXANDRIA 399 



3. D. exixia, Hook. Tubers depressed-globose; raceme about 4-flow- 

 cred ; spurs short, slightly incurved, obtuse, nearly parallel. Hook. 

 Am. Up. 35. (Diclytra. DC. Beck, Hot. p. 23.). 

 JliO, D. canadensis. DC. Prodr. I. p. 126. Lindl. Ency. p. 600 



Choice, or excellent Dielytra. 



Root perennial, tuberous, with numerous slender fibres below ; tubers depressed- 

 globose, smooth, tawney-yellow throughout, clustered and concatenated, the lar- 

 gest ones half an inch in diameter. Leaves nearly as in the precedins,-but the 

 segments narrower, more linear, and of a deeper green, or not quite so glaucous. 

 Flowers very fragrant. Srape 4 to 6 or 8 inches higb> slender, naked ; raceme 

 simple, short, 3 to 5- ( usually 4-) flowered; pedicels short, with each an ovate-ob- 

 iong bract at base which is often mucronatc, serrate, and marked with lines of 

 purple dots on the back,— als/i a pair of opposite bracts near the flower, colored 

 slightly on the back. Sepals very small, dentate— sometimes a mere subulate 

 point, or rudiment. Petals 4; the 2 outer ones gibbously produced at base, or 

 with nearly parallel short rounded spurs about 2 lines long, very white, contracted 

 at throat, with an ovate concave spreading border, which is mostly white, some- 

 limes tinged with purple,— the 2 inner petals linear, strongly keeled, the summits 

 dilated, concave, fuliUeform, broadly crested on the back, dark purple within, 

 cohering at apex and embracing the stigma. Style somewhat quadrangular ; 

 stigma compressed, round ish-ovate. 



Hab. Rich, moist grounds; Kimbcrton : rare. Fl. April — May. Fr. May— June. 



Obs. This is the D. canadensis, DC. or var. b. {canadensis) of Prof. Hooker ,— 

 who thinks it is not specifically distinct from D. exiniia. It may, also, be the D. 

 formosa.oi s »me of the American Hotanists; but that species, as I recollect it some 

 years since in the Bertram Botanic Garden, has bright purple /lowers The flow- 

 ers of our plant are remarkably fragrant,— the odor resembling that »»f the lilac. 

 It was first detected in this County by .Miss A. Kimber, in 1820,— in the meadow* 

 along French Creek, near Eimberton. I have received very fine specimens from 

 Kentucky, from my friend Prof. Short. One or two additional species are enu- 

 merated in the U. States. 



330. ADLUMIA. Raf. D C .Syst. 2. /,. 1 1 1 . 

 [Dedicated to the late Major John Adlum; a distinguished cultivator of the vine.] 



Sepals 2, lance-ovate, membranaceous, deciduous. Petals 4, cohering 

 in a monopetalous spongy persistent corolla, 4-lobed at apex, and bi-gib- 

 bous at base. Capsule siliquose, linear-oblong, 2-valved, many-seeded, 

 invested by the fungous corolla* 



Herbaceous: caulescent; climbing; leaves alternate, bipinnctely dissected ; 

 flowers in axillary corymbose racemes. Nat. Ord. 10. Lindl. Fu.mariacejs. 



1. A. cirrhosa, Jtaf. Stem slender, climbing by the cirrhose peti- 

 oles ; leaves superdecompound, glaucous. Beck, Hot. p. 24. 

 Fumaria fungosa. mild. Sp. 3. p. 857. Ait. Ktrw. 4. p. 239, 

 F. recta. Mx. Am. 2. p. 51. 



Corydalis fungosa. Pers. Syn. 2. p. 269. Muhl. Catal. p. 63. 

 Pursh,Am.2.pA63. JSTutt. Gen. 2. p. 86. Bigel. Bost. p. 263. Torr 



Comp. p. 259. Eat. Man. p. 1 10. 



Cibrhose Adlumia. Vulgd— Climbing Fumitory. 



Plant smooth. Rootbiettohl. Stem 8 to 15 or 20 feet long, slender, branching 

 and climbing. Leaves 4 to 6 or 8 inches long, bipinnately dissected, or branched 



