238 The Ohio Journal of Science [Vol. XXI, No. 7, 



1. Flowers yellow, %-lM in- long; spur of corolla subulate, nearly as long as 



the body L. linaria. 



1. Flowers blue to white, J^-J 2 in. long; spur of the corolla filiform . .L. canadensis . 



1. Linaria linaria (L.) Karst. Yellow Toadflax. 



A very common but beautiful perennial, with slender, erect, glabrous 

 stems, sometimes glandular-pubescent above, and slightly glaucous, 1-3 

 ft. high. Leaves linear, pale green, entire, Yi-^Yi in. long, about )i in. 

 wide, mostly alternate, but growing close together on the stems. Flowers 

 pale yellow with darker spur and orange-colored palate, about V/i in. 

 long, crowded in dense racemes. Capsule ovoid. Seeds rugose, winged. 

 In fields and waste places. June-October. General, but no specimens 

 from the north-western counties. From Europe. Commonly called 

 Butter-and-Eggs. Used in medicine; flowers used as a dye. 



2. Linaria canadensis (L.) Dum. Blue Toadflax. 



Glabrous biennial or annual, 6 vci.-lYi ft. high, the flowering stems 

 erect or ascending, the sterile shoots spreading or procumbent, and very 

 leafy. Leaves linear or linear-oblong, \i-\Yx in. long, 's in. wide, those 

 on the sterile shoots usually opposite. Flowers blue or white, M^^s in. 

 long, in long, slender racemes; spur of corolla filiform, curved, as long 

 as the tube or longer; palate white. Seeds angled, wingless. In dry 

 or sandy soil. May-September. Richmond Township, Huron County. 



25. Chaenorrhinum (D. C.) Lange. Toadflax. 



Herbs, with alternate, usually entire leaves, and blue, 

 violet, or white, axillary flowers. Corolla two-lipped, definitely 

 spurred on the lower side, the throat not closed by the palate. 

 Stamens four, didynamous. Capsule inequilateral, one carpel 

 longer than the other. Seeds ovoid or cuneate, ribbed. 



1. Chaenorrhinum minus (L.) Lange. Lesser Toadflax. 



Annual, glandular-pubescent all over, often branched, 5-13 in. tall. 

 Leaves linear-spatulate to linear, mostly obtuse, narrowed at the base, 

 3^~lM in. long. Flowers blue or bluish, about ^g in. long, shorter than 

 the pedicels; spur short and stout, much shorter than the body of the 

 corolla. Capsule globose-ovoid. Waste grounds and ballast. August- 

 October. Portage, Huron and Belmont Counties. From Europe. 



26. Kickxia. Dum. Cancerwort. 

 Spreading or creeping herbs, with pinnately-veined, short- 

 petioled leaves, and solitary, white, yellow, or variegated, 

 axillary flowers. Corolla two-lipped, spurred on the lower 

 side, the throat closed by the palate. Stamens four, didynamous. 

 Seeds numerous, ovoid, mostly rough or tubercled. 



1. Leaves cordate or rounded at the base, ovate-orbiculai ; corolla spur curved. 



K. spuria 

 \ . Leaves hastate; corolla spur straight K. elatine. 



