102 VEBBENACE^. (VERVAIN FAMILY.) 



2. S. albens, Gr. Soft-tomcntose with whitish wool, 3 to 5 ft. high; leaves mostly 

 cordate at base, obtuse, crenate, 2 or 3 inches long; flowers several or many in capitate 

 clusters which usually exceed the small floral leaves and form an interrupted spike; corolla 

 white with purple dots on the lower lip. 



3. S. pycnantha, Benth. Very hirsute, with long and mostly soft spreading hairs, 

 not white, two feet high or more; flowers in a dense cjdindraceous naked spike (an inch 

 or two long), exceeding the small bract-like floral leaves excejit in the lowest and some- 

 times rather distant clusters; corolla white or cream-color, with purple on the lower lip. (?) 



* * Corolla purple, the iipper lip hairy 07i the hack ; p'uhescence somewhat Jiispid; no tomentum, 



4. S. buUata, Benth. Stem retrorsely hispid, especially on the angles, 1 to 3 ft. 

 high; leaves somewhat rugose, nearly all petioled, 1 to 2 inches long; flowers usually 6 in 

 the false whorls, these rather distant, forming a narrow interrupted spike; lower lip of 

 the corolla fully as long as the tube, 4 or 5 lines long, the ujjper half as long. — Variable. 



* * * Tube of the rose-red corolla twice as long as the calyx, 6 to 9 lines long. 



5. S. Chamissonis, Benth. Stem 2 to 5 ft. high, stout, mostly rough-hispid, with 

 retrorse rigid bristles; leaves 2 to 5 inches long; lips of the corolla pubescent outside. — 

 Wet ground. 



13. TRICHOSTEMA, L. Bluk-cuels. 



Calyx campanulate and almost equally 5-cleft. Corolla with short or slender tube and 

 an almost equally 5-parted limb. Stamens with long capillary curved filaments, some- 

 times cohering at the base. — Strong scented herbs; with entire leaves, and blue or purple 

 corolla and stamens. In ours the flowers are in cymose axillary clusters, somewhat 

 raceme-like in age; the corolla about 5 lines long, and the stamens twice as long or more. 



1. T. laxum, Gr. Minutely soft pubescent, about a foot high, simple or loosely 

 branched from the base; leaves rather distant, lanceolate or oblong-lanceolate, tapering 

 into a petiole at the base; flower clusters distinctly peduncled, usually forked and iu 

 age equaling the leaves; corolla almost smooth. 



2. T. lanceolatum, Benth. Leafy; leaves much longer than the internodes, lance- 

 olate or ovate-lanceolate, sessile by a broad base, 3-5-nerved, an inch or less long; flower 

 clusters nearly sessile, short, one-sided; corolla somewhat pubescent. — Its odor sicken- 

 ing, tarry. 



Oeder 46. VERBENACE-ffi. 



Herbs or shrubs difl'ering from Lahiatce mainly in the ovary and fruit, which is undi- 

 vided and 2^-celled, at maturity either dry and splitting into as many 1-seeded nutlets, 

 or drupaceous, containing as many little stones. 



