m. 23. OOLLXNSONZA. 1 1 1 



V 



No. 23- 



COLLTNSONIA CANADENSIS. 



&GLISH Naiie—BROADLEAF collinsonia 



French Name — Collinsone du Canada. 

 German Name — Canadische Colli>'so>'ie, 

 Officinal Name — Collinsonia, 

 Vulgar Names — Richweed^ RIchleaf, Heal-all, 

 Horseweed, Knot-root, Stone-root, Knot-weed, &c. 

 Authorities — ^Lin, Mich. Pursh, Schoejpf, Mease^ 



Genus Collinsonia — Calix eampanulate, bilabiate 



labiate, campaniilate, upper lip very short, notched? 

 lower lip fringed. Stamina two or four, or rather 

 four, tw^o of which are often sterile, or without an- 

 thers. One pistil, one style, stigma lateral. Fruit, 

 four seeds, often only one or two by abortion — Leaves 

 opposite, flowers terminal panickd, commonly yel- 

 lowish. 



Species C. canadensis — Smooth; leaves few, am- 

 ple, petiolate, cordate, seri'a'e, acuminate; panicle 

 lax, teeth of the calix subulate, e(jual to the lube of 

 the corolla, two fertile stamina. 



DESCRIPTION— Root perennial, knottj-, depres- 

 sed, hard witli many slender fibres — Stjm simple, 

 round, straight, about two [eet high — Only two or 



three pairs of lar^ethin leaves, on lon^ petioles, cor- 



