Hedeoma. LABIATE. 363 



calyx hirsute or hispid, from cylindraceous to at length ovate-tubular, slightly gibbous, in 

 age more or less curved, not obviously bilabiate ; the subulate-setaceous teeth at length all 

 connivent and slightly curved upward ; the lower nearly twice the length of the upper : 

 corolla from 3 or 4 lines long, and little exserted, to 6 lines and double the length of the 

 calyx. — Lab. 308, & DC. 1. c. 245; Gray, 1. u. H. ciliala, Nutt. Gamb. 183, not Benth.— 

 Common from Texas to Arizona, and north to the plains of Colorado and even Nebraska. 

 (Adjacent Mex. ) 



"Var. Reverchoni. Rigid : leaves greener, coriaceous, elliptical (half inch long, 3 

 lines or more broad), or the floral oblong, hirsute-pubescent or at least ciliate, the few 

 veins more prominent beneath. — Rocks, Brown Co., Texas, Reverchon. 

 H. hyssopif olia, Gray. Nearly glabrous throughout : stems slender, erect and simple 

 from a lignescent perennial base, 8 to 12 inches high : leaves all sessile and entire, nervose 

 veined (especially beneath), narrowly linear-lanceolate and about half inch long, or the 

 lowest much shorter and oblong or oval : short peduncles linear-bracteate, 1-5-flowered : 

 calyx obscurely pubescent, narrowly cylindrical, not gibbous (the tube 2k lines long), not. 

 bilabiate ; the subulate-setaceous lower teeth nearly twice the length of the similar upper 

 ones, all straightish : corolla much exserted, 7 or 8 lines long, purplish. — Proc. Am. Acad. 

 xi. 96 ; Rothrock in Wheeler Rep. ined. t. 17. — Arizona, on Mount Graham, Rothrock. 



-H- -H- Leaves serrate with salient acute and callous teetli in which the veins terminate, all sub- 

 sessile or the lower short-petioled : many-stemmed perennials: cymes few-flowered: calyx nar- 

 row, at length somewhat gibbous or curved, 2 or 3 lines long, minutely hirsute. 



H. dentata, Torr. Hirsute-pubescent : stems erect and slender, a, foot high : leaves 

 oblong-lanceolate (4 to 6 lines long), coarsely few-dentate ; veins ascending, rather indis- 

 tinct: calyx-tube slender ; limb hardly bilabiate; subulate-setaceous lower teeth erect and 

 moderately longer than the recurved-spreading upper ones : corolla pink, nearly twice the 

 length of the calyx, 4 lines long. — Bot. Mex. Bound. 130, in part ; Gray, 1. c. — S. Arizona, 

 near Santa Cruz, Thurber, Rothrock. 



H. plicata, Torr. 1. c. Minutely soft-pubescent, a span or more high, at length diffuse : 

 leaves approximate, rigid, rhombic-ovate or the lower roundish-ovate and the uppermost 

 floral oblong (3 or 4 lines long), numerously and coarsely callous-serrate, conspicuously 

 lineate with the copious strong and straight mostly simple veins, which are very prominent 

 beneath and extend from the midrib through the acute teeth : calyx of the preceding, but 

 less slender and more gibbous or curved, also more evidently bilabiate : corolla shorter, 2 

 or 3 lines long. — Mountains along the Rio Limpio and Rio Grande, S. W. Texas, Wright, 

 Dicjelow. (There is a similar, but larger flowered and villous species, II. coslata, S. Mex,, 

 Ghiesbreyht, no. 815.) 



§ 2. Stachydeoma, Gray, 1. c. Flowers sessile or subsessile, verticillastrate 

 in a terminal interrupted spike, the floral leaves diminished to bracts, except 

 sometimes the lowermost : throat of the pink or purple corolla with a pair of 

 longitudinal projecting folds under the lower lip : calyx hardly at all gibbous, 

 rather short, long-hirsute : stem erect : leaves all sessile or nearly so, glabrous or 

 glabrate, with at least the uppermost hirsute-ciliate. 



H. ciliata, Benth. A span or two high from an annual root : stem retrorsely puberu- 

 lent and above mostly hirsute with some spreading hairs : leaves oblong, obtuse, entire, 

 veinless (inch or less long) : flowers several in the clusters of the spike : calyx moderately 

 bilabiate ; its 15-nerved tube and the subulate-linear bractlets conspicuously white-hirsute ; 

 throat villous-bearded ; teeth more naked, similar and of equal length, slender-subulate 

 ciliolate, connivent after anthesis : tube of the rose-purple corolla not exserted ; upper lip 

 2-lobed; throat hairy at the insertion of the short included stamens: sterile filaments 

 wanting. — DC. Prodr. xii. 245; Gray, I.e. 367. — Sandy ground, Texas, Berlandier (ex 

 Benth.), Drummond, E. Hall. 



H. graveolens, Chapm. Stems numerous, a foot or more high from a perennial base 

 or root, strict, often simple, soft-hirsute or pubescent: leaves round-ovate, subcordate, 

 obscurely pinnately veined (the larger half inch long) ; lower short-petioled and sparingly 

 dentate ; upper passing into similar bracts, which are shorter than the usually solitary 

 flowers they subtend : bractlets oblong, foliaceous : tube of the 12-13-nerved and conspic- 



