

DIDYNAMIA GYMXOSPERMIA 361 



Ga///c(?-Marrube blanc. Germ.-Der weisse Andorn. Zfo/>.-Marrubio. 

 Root perennial. Stein 9 to 18 inches high, cespitose or branching from tha 

 base, ascending, clothed with a white wool. Leaves about 2 inches long, and 

 nearly as wide as long, unequally crenate-dentate, rugose, greenish above, ab- 

 ruptly narrowed at base to a flat nerved woolly petiole half an inch to an inch long. 

 Verticils distant, axillary, sessile, dense ; bracts linear, woolly, as long as the 

 calyx, with a smooth subulate recurved apex. Calyx woolly, 10-nerved, with 10 

 smooth subulate recurved teeth, the alternate ones shorter. Corolla white, small, 

 pubescent; the upper lip oblong, bifid. 

 Hob, Stony banks ; about houses, &c. frequent Fl. July— August. Fr. Sept. 



Obs. This foreigner is naturalized in many places ; but does not seem to extend 

 itself very fast. The herb is a deservedly popular tonic ; And a syrup prepared 

 from it makes an excellent pectoral medicine. There are no native species in the 

 U. States. 



11. Ajttoa Tbibb. Corolla with the upper lip sometimes very short, sometimei 

 split, with the segments depending, rarely erect and vaulted ; lower lip elonga- 

 ted. Stamens ascending, generally much exserted. Akencs reticulately rugose. 

 Ajugoide-s. Denth. 



291. TRICHOSTEMA. L. Mitt. Gen. 519. 



[Greek, Thrix, trichos, a hair, and Sterna, a stamen ; from its hair-like stamens.] 



Calyx depresscd-campanulate, oblique, resupinate, unequally 5-cIeft ; 

 the 3 upper teeth (becoming the lower ones by the twisting of the 

 peduncle) elongated, connate; the lower teeth (finally upper) short. 

 Corolla with the tube slender, mostly exserted; limb 5-cleft; lobes ob- 

 long, declined, the lower ones scarcely larger. Stameiis much exsert- 

 ed, the lower ones longer ; filaments often sub-monadelphous ; anthers 

 % celled, cells divaricate, or diverging, Akenes rugose-pitted. 

 1. T. dichotomum, L. Leaves lance-oblong, or rhomboid-lanceo- 

 late, rather obtuse, entire, pctiolate ; flowers solitary, opposite, resupin- 

 ate; calyx very oblique. Beck, Bot.p. 275. (con, Bart. Jim. 3. p. 93. 

 Di chotomous Trichostema. FaZ^o-Bastard Pennyroyal. Blue Curls. 

 Root annual. Stem 6 to 12 or 15 inches high, obtusely quadrangular, with nu- 

 merous opposite branches, often bushy, or paniculate, clothed with a short ciner- 

 eous roughieh pubescence. Leaves 1 to near 2 inches long, and 1 third to 2 thirds 

 of an inch wide, pubescent, tapering at base to a petiole 1 fourth to half an inch 

 long. Flowers from the axils of bract-like leaves on the branches, on pubescent 

 peduncles 1 fourth to near half an inch in length, the terminal ones di- or tri- 

 chotomous ; bracts lanceolate, shorter than the peduncles. Calyx inflated-campan- 

 ulatc, ribbed and veined, roughish-pubesccnt, somewhat bilabiate, finally very 

 oblique and unequal, resupinate, the upper lip becoming the lower, much longer, 

 and with 3 lance-ovate acuminate teeth ; the lower (or finally upper) teeth short] 

 ovate, acute. Corolla bright blue (rarely purplish), slightly pubescent, somewhat 

 ringent ; the upper lip slender, falcate, lower one linear, oblong. Stamens exaert- 

 ed, the filaments very long, slender and hair-like, curved. Akencs somewhat 

 obovoid, reticulately rugose-pitted, light brown. 



Hob. Sandy grounds; old fields, &c. frequent. FL August. /V.September. 



Obs. This herb has a resinous odor, considerably resembling that of the ripe 

 kernels of the Juglans nigra, or black walnut. The calyx is subject to a mons- 

 trosity (probably from the puncture of insects),-becoming elongated, and re- 



Z™T:n\^T bl0ne Cap5Ule * 0n '^*P«ciei, with linear leaves, but 

 nearly allied to this, occurs in the U. States. 



31 



