800 Labiatae Teucrium 



B. Upper lip of corolla flat, or the corolla regular. 

 C. Flowers in axillary whorls or clusters, or these forming terminal spikes. 

 Corolla more or less 2-lipped; upper lip erect or spreading, the lower lip also 

 spreading. 

 Anther-bearing stamens 2. 



Calyx teeth equal; stamens long-exserted 7323. Cunila, p. 821. 



Calyx teeth not equal; stamens not exserted. . . .7302. Hedeoma, p. 817. 

 Anther-bearing stamens 4. 



Calyx 15-nerved 7313. Hyssopus, p. 819. 



Calyx 10-13 nerved. 



Stamens curving more or less, ascending under the upper lip. 

 Corolla tube curved upward; calyx 13-nerved, not hairy in the throat. 



7304. Melissa, p. 818. 



Corolla tube straight; calyx 10-13-nerved, usually hairy in the 



throat 7305. Satureja, p. 818. 



Stamens straight. 



Plants tall, erect ; calyx nearly regular 



7317. Pycnanthemum, p. 819. 



Plants low, creeping at the base; calyx 2-lipped 



7319. Thymus, p. 820. 



Corolla nearly regular, 4- or 5-toothed. 



Anther-bearing stamens 2 7326. Lycopus, p. 821. 



Anther-bearing stamens 4 7328. Mentha, p. 823. 



C. Flowers in terminal panicled racemes or spikes; corolla 2-lipped. 



Anther-bearing stamens 2; corolla yellow, lower lip not fimbriate; native. . 



7331. Collinsonia, p. 826. 



Anther-bearing stamens 4; corolla usually purplish, the lower lip fimbriate; 

 introduced 7332. Perilla, p. 826. 



7212. TEUCRIUM [Tourn.] L. Germander 



Pubescence of the upper part of stem and of the inflorescence sparse or dense, consisting 

 mostly of recurved hairs about 0.5-0.75 mm long, glandless. 



Bracts exceeding the calyx; leaves narrowed at the base 1. T. canadense. 



Bracts not exceeding the calyx, equaling it or shorter; leaves usually more or less 



rounded at the base la. T. canadense var. virginicum. 



Pubescence of the upper part of stem and of the inflorescence dense, consisting usually 

 of spreading or slightly recurved hairs about 1 mm long or longer. 



Hairs of the inflorescence mostly gland-tipped 2. T. occidentale. 



Hairs of the inflorescence mostly without glands 2a. T. occidentale var. boreale. 



1. Teucrium canadense L. (Rhodora 35: 295. 1933.) (Teucrium lit- 

 torale Bickn. and Teucrium canadense var. littorale (Bickn.) Fern.) Amer- 

 ican Germander. Map 1726. Infrequent throughout the state in moist soil 

 along roadsides, in low, open woods, especially along streams, about lakes, 

 and in fallow and cultivated fields. The amount of pubescence of the stem 

 and calyx varies greatly. 



N. B. to Ind., southw. to Fla. 



la. Teucrium canadense var. virginicum (L.) Eaton. (Teucrium cana- 

 dense of Gray, Man., ed. 7, not L.) Map 1727. Rather frequent through- 

 out the state in habitats similar to those of the species. I admit that the 

 distinction between the species and the variety is not very constant since 

 the bracts of the flowers become progressively shorter toward the end of 

 the raceme. The lowest bracts may be conspicuously longer than the calyx 

 while the remainder may be shorter. Other characters that have been 



