obscurely or strongly toothed, the upper surfaces glabrous or variably pubescent 

 with curled or straight hairs or variably hirsute with elongate stiflish glandular 

 or eglandular hairs, the lower surfaces silvery with minute closely appressed hairs 

 or pubescent with small curled hairs or even tomentose with longer curled hairs 

 or hirsute with glandular spreading hairs, rarely glabrous; median petioles to 15 

 mm. long; flowers subsessile, disposed in usually dense conspicuously bracteate 

 spikes 2-3 dm. long, the bracts usually exceeding the calyces; flowering calyces 

 5-7 mm. long, silvery with minute appressed hairs or pubescent with curled and 

 spreading glandular hairs or hirsute with elongate mostly glandular hairs, these 

 variably combined in some forms, the tube enlarged and cuplike at maturity but 

 scarcely saclike or inflated, the orifice oblique; calyx teeth deltoid, the three upper 

 more or less joined and tending to be obtuse or blunt, the two lower more or less 

 acute or acuminate and generally about 2 mm. long; corolla 1 1-18 mm. long, the 

 tube 4-7 mm. long; cocci glabrous, wrinkled. Inc. var. virginicum (L.) Bat., T. 

 virginiciim L. 



In water and mud along streams and canals, about lakes, in marshes and wet 

 grassy swales throughout Tex., Okla. (Alfalfa, Caddo, Haskell, Choctaw, Mc- 

 Curtain, Logan, Jefi'erson, Johnston and Murray cos.), N. M. (Colfax, Valencia, 

 San Juan, McKinley, Socorro, Dona Ana and Chaves cos.) and Ariz. (Navajo, 

 Yavapai, Graham and Pima cos.), May-Sept.; a variable species that occurs from 

 Que. to B.C., s. to Cuba and Mex. 



The following varieties are found in our area. 



1. Pubescence very fine and appressed var. angustatum Gray. 



1. Pubescence not as above (2) 



2(1). Hairs of the stem and lower leaf surface elongate, spreading, dense, more 

 or less glandular; calyx tomentose with short as well as long glan- 

 dular hairs {T. occidentale Gray) 



var. occidentale (Gray) McCl. «& Epl. 



2. Hairs of stem and lower leaf surface minute, curling and eglandular; calyx 



mostly thinly pubescent with nonglandular hairs var. canadense. 



2. Teucrium cubense Jacq. Fig. 658. 



Annual or perennial weedy herb; stems usually several from a taproot, branch- 

 ing at the base and often above, more or less bushy, as much as 7 dm. high, 

 usually much smaller, glabrous or cinereous with minute spreading or downwardly 

 curled hairs, sometimes pubescent in the inflorescence with longer somewhat curled 

 hairs; basal leaves oblong to obovate, shallowly lobed to crenate or entire, atten- 

 uate to petioles that are usually shorter than the blades, soon withering, these 

 passing into the cauline leaves that are variably lobed, these (in turn) passing 

 gradually into the leaves of the inflorescence that are sometimes subentire, some- 

 times lobed to the middle or sometimes lobed nearly to the base with the lobes 

 linear; flowers with slender pedicels 4-12 mm. long, usually in the upper half of 

 the stem, sometimes nearly to the base; flowering calyces campanulate, glabrous 

 or hirtellous with minute spreading hairs and glandular or sometimes pubescent 

 with longer somewhat curled hairs, 5-10 mm. long, the tubes 2-3 mm. long; 

 calyx teeth 3-6 mm. long, deltoid-lanceolate, closed over the cocci at maturity or 

 spreading; corolla white, often with purple lines in throat, pubescent, tending to 

 be bearded in the throat, 7-15 mm. long, the tube 1-2 mm. long, the lower lip 

 4-8 mm. long; stamens glabrous, the longer pair 6-8 mm. long; cocci pitted or 

 grooved lengthwise (the grooving may be a function of the degree of maturity), 

 glabrous or pubescent at the tip. Melasma cubense (Jacq.) Small. 



In clay or hard sandy loams, along streams and draws, in wet soil along 

 streams, sand-gravel bars subject to flooding, in palm groves and low grassy soils, 



1411 



