190 GENUS COLLINSIA. [December. 



to obtain the plant fronn which the accompanying drawing 

 was taken by my friend, Mr. C. A. Le Sueur. This, plant 

 has for several years been known to Dr. Drake of Cin- 

 cinati, in whose collection I saw specimens of it, and 

 also with Dr. Short of Lexington, Kentucky, two gentle- 

 men, who, amidst the avocations of an irksome profession, 

 have still found leisure to cultivate some of the branches 

 of natural science. 



I have dedicated this genus to the name of Zaccheus 

 Collins, Esq. of Philadelphia, a gentleman, whose talents 

 as a botanist and a mineralogist are deservedly acknow- 

 ledged. 



LinnaanC'LAsz and Order. 

 DIDYNAMIA ANGIOSPERMIA. 



Natural Order. ANXiRRHiNEiE, 



Genus COLLINSIA. 



Calyx quinquefidus. Corolla bilabiata clausa; labio 



superiore bifido, inferiore trifido; lacinia intermedia, ca- 



rinato-saccata genitalia arete tegens. Capsula rotunda, 



subunilocularis, subquadrivalvis. Semina duo vel tria. 



Planta annua; folia opposita et verticillata, integra; pe- 

 dunculi verticillati axillares, uniflori. 

 Collin SI A verna. 



Description* Root fibrous, annual. Stem often sim- 

 ple or branched towards the base, terete, nearly smooth, 

 about twelve inches high. Radical leaves petiolate, round- 

 ish, or obovate-spathulate, denticulate; stem leaves ovate 

 or ovate-lanceolate, sparingly denticulate and somewhat 

 scabrous on the margin, sessile, and subamplexicaule, 

 sometimes a little pubescent, but usually smooth; floral 



