Britton, Nathaniel Lord, 1859-1934 <br/><br/>
An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic ocean westward to the 102d meridian, by Nathaniel Lord Britton and Addison Brown. The descriptive text chiefly prepared by Britton, with the assistance of specialists in several groups; the figures also drawn under his supervision 

 - New York  New York Botanical Garden  1923 
 - 3 v.  il. ; 28 cm. 
<br/><br/> Contine: v.1 Ophioglossaceae to Polygonaceae. Ferns to buckwheat -- v.2 Amaranthaceae to loganiaceae. Amaranth to polypremun -- v.3 Gentianacaeae to Compositae. Gentian to Thistle  Incluye: glosario, índice y listado de nombre vulgares en inglés.  Reimpresión en 1936 de la 2Ğ edición de 1923. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CANADA<br/>ESTADOS UNIDOS<br/>FLORA