DIDYNAMIA— ANGIOSPERMIA. Bartsia. 117 



like making a character " give a genus, not a genus a 

 character," one of the great causes of so many unnatural 

 genera in Zoology as well as Botany. An American 

 writer has remarked also that " the recent custom among 

 Geologists, of cutting up and subdividing, seems to be 

 upon the point of ruining the simplicity of the Wernerian 

 arrangement, as the same custom among Botanists has 

 already nearly ruined the Lmneean system of vegetables." 

 Van Rensselaer' s Survey of the Erie Ca7ial, p. 17. I hope 

 this last remark is not correctly true, and that such in- 

 judicious attempts will be resisted by those who jiossess 

 the talent of scientific combination ; which, in Natural 

 History, is full as necessary as that of observation and 

 discrimination, and much less conmion. 



303. BARTSIA. Bartsia. 



Linn. Gen. 303. Juss. 100. Fl. Br. 647. 



'N'dL Ore]. Personaf^c. Linn. 40. Pecliculares. Juss.33. Scro- 

 l)hularincc. Br. Prodr. 433. 



Cal. tubular, more or less coloured; the border in 4 acute, 

 nearly equal, segments. Cor. ringent, rather compressed; 

 tube short ; throat funnel-shaped ; upper lip longest, 

 concave, undivided ; lower reflexed, small, in 3 deep, 

 nearly equal lobes. Filam. thread-shaped, about the 

 length of the upper lip, incurved. Anth. incumbent, a 

 little hairy, of two cells opening longitudinally in front, 

 and all collected together under the upper lip. Germ. 

 simple, ovate, acute. Style thread-shaped, curved. Stig- 

 ma obtuse, undivided. Caps, ovate, pointed, compressed, 

 of 2 cells and 2 valves ; the partition contrary to the 

 valves, finally splitting lengthwise, and each portion 

 bearinga longitudinal receptacle. Seeds numerous, small, 

 angular, attached by their inner e(\ge to each receptacle. 



Downy herbs, mostly perennial, turning black in drying. 

 Stems erect, leafy, square or round ; simple or branched. 

 Leaves simple, nearly or quite sessile, mostly opposite, 

 serrated. Fl. purple, red, or yellow, in leafy, or brac- 

 teated, terminal, upright spikes. 



1. B. alp'ina. Alpine Bartsia. 



Leaves opposite, ovate, somewhat heart-shaped, bluntly 



serrated. Stem square. Root creeping. 

 B. alpina, Linn. Sp. PL 839. WiUd.v. 3. 187. Fl. Br. 6i7.E7igl. 



