BUCHNERA. 



SCROPHULARIACE.E. 



39 



Tribe V. BUCHNEREjE. Benth. 



Calyx 5-cleft or 5-toothed. Corolla 5- or unequally k-cleft {never 2-lipped) ; the lobes all 

 flat. Stamens 4, ascending : anthers one-celled. Stigma small, somewhat capitate. 

 Capsule 2-valved ; the valves entire or 2-cleft. 



10. BUCHNERA. Linn. ; Endl. gen. 3960 ; Benth. syn. Buck, in Hook. comp. hot. mag. 



1. p. 365. BUCHNERA. 

 [ In honor of John Gottfried Bdchner, a German botanist.] 



Calyx tubular, 5-toothed. Corolla somewhat salver-form, with a long and slender tube ; the 

 limb fiat, almost equally 5-lobed ; the lobes cuneate-obcordate. Stamens didynamous, all 

 perfect, included : anthers 1-celled. Capsule ovoid, 2-celled, loculicidal, opening elastically ; 

 the valves entire. Seeds rather numerous, angular. — Perennial herbs, turning black in 

 drying. Leaves opposite, mostly rough. Flowers opposite, in a terminal spike. 



1. Buchnera Americana, Linn. Blue Hearts. 



Hairy-hispid ; stem simple ; leaves lanceolate, somewhat toothed, sessile, rough ; spike 

 finally elongated, with the flowers rather distant ; tube of the corolla twice as long as the 

 calyx. — Linn. sp. 2. p. 630 ; Walt. fl. Car. p. 169 ; Michx. fl. 2. p. 18 ; Pursh, fl. 2. 

 p. 421 ; Ell. sk. 2. p. 112 ; Torr. compend. p. 240 ; Beck, hot. p. 263 ; Benth. I. c. ; Dar- 

 lingt. fl. Cest. p. 371. 



Whole plant clothed with short rough hairs, turning grayish black in drying. Stem 1-2 

 feet high, straight ; the upper part nearly naked. Leaves 3-nerved ; the lowest often ovate- 

 or oblong-lanceolate ; the cauline diminishing in breadth upward, remotely and often obscurely 

 toothed. Flowers at first approximated, but finally remote. Bracts much shorter than the 

 calyx, ovate. Calyx-tube oblong-tubular, slightly curved ; the teeth short and acuminate. 

 Corolla purple ; the tube about twice as long as the calyx : border half an inch in diameter ; 

 the two upper lobes shortest. Stamens much shorter than the tube of the corolla : anthers 

 oblong, acute. Style included : stigma obtuse. Capsule ovoid-oblong, coriaceous, enclosed 

 in the enlarged ventricose calyx ; the placenta extending into the cavity of the cells. Seeds 

 minute, black. 



Moist meadows. Gorham, Ontario county (Dr. Gray) ; on the Genesee river, north of 

 Rochester (Dr. Bradley). Fl. August. Fr. October. 



