123 



An undescribed Species of Hydrophvllum. — Early in May 

 of 1 899 Dr. MacDougal collected a number of plants in northern 

 Minnesota and sent them to the New York Botanical Garden. 

 A Hydrophyllum of this collection bloomed in June of this year 

 for the first time, alongside of plants of Hydrophyllum Virginicum, 

 obtained in 1896 from Mr. Harrison, of Lebanon Springs, N. Y. 



The Minnesota plant much resembles H. Virginicum in habit 

 and foliage ; but differs from it strikingly in floral characters. 

 At the time of flowering the calyx-segments are erect against the 

 corolla, while in Virginicum they are widely spreading, and in 

 the new species they remain nearly erect in fruit ; in both species 

 they are narrowly linear and about equally ciliate. In H. Vir- 

 ginicum, the corolla-segments are erect, while in the Minnesota 

 plant their tips are spreading ; the color of the corolla is a 

 marked purple in the new species, while in the plants of Virgin- 

 icum studied, the corolla is pale, nearly white, although I think, 

 from observations made on Virginicum in the Alleghanies, that 

 the color in that species varies considerably. In H. Virginicum 

 the petioles are slightly ciliate, while in the Minnesota plant the 

 upper ones are strikingly so. 



The foliage of the two species is however so similar that I 

 have not yet been able to sort them satisfactorily in the herba- 

 rium, except by the ciliate petioles, which I am not sure is a con- 

 stant character. I call the new species Hydrophyllum patens. 



N. L. Britton. 



Notes on Verbena. — I. Verbena racemosa. Annual (?), 

 hirsute. Stem branched at the base, the several branches erect 

 and ascending, 10-20 cm. tall : leaves firm ; blades oval or 

 ovate in outline, about 2 cm. long, 1.5 cm. wide, deeply twice 3- 

 parted into linear segments, the lower ones petioled, the upper 

 nearly sessile : spikes terminating the branches, short-peduncled, 

 cylindric, 2-4 cm. long at maturity, rather dense : bracts 4—7 mm. 

 long, lanceolate : calyx rough-hairy, surpassing the bracts ; lobes 

 linear-subulate, shorter than the tube : corolla light blue or nearly 

 white, 1 cm. long, persistent ; limb about 4 mm. broad : fruit 

 3 mm. long. 



In low places on sandy soil, from the. vicinity of El Paso to 

 Martin County, Texas. April to June. Verbena racemosa is 



