ORDER 89. LABIAT^L 545 



4. On Lookout Mt. Tenn. I to Middle Ga. Plant 1 to 2f high, simple. 

 Lvs. large (6 to 8' long), petioles about 2'. Rac. 5 to 10'. Fls. twice larger (7 

 to 9" long) than in Nos. 2 and 3. Stem, and sty. very long, spreading. Lower 

 lip strongly fringed. May, Jn. 



5 C. anisata Ph. Viscid-pubescent ; Ivs. broad-ovate, acute, subserrate, at base 

 cordate or truncate, scabrous above, the floral similar, very small, sessile ; pan- 

 icle dense-flowered; fls. opposite; col. teeth ovate, obtuse, with a short mucro, Vie 

 3 upper longer; stem. 4. Middle Ga. (Feay), Ala., Fla. ? Plant 1 to 2f high. 

 Lvs. 5 to 7' by 3 to 5', very rugous, often short acuminate, petioles 1' to 15". 

 Fls. about as large as in No. 1. JL Sept. 



12. HYSSO'PUS, L. HYSSOP. (Hebrew ezeb ; Arabic uzzof ; English 

 hyssop.) Calyx tubular, 15-striate, equally 5-toothed, upper lip of the 

 corolla erect, flat, emarginate, lower lip 3-parted, the middle segment 

 largest, tube about as long as the calyx ; stamens 5, exserted, diverging. 

 H. officinalis L. Lvs. linear-lanceolate, acute, entire, sessile ; caL teeth erect -, 

 fls. in racemous, secund verticils ,- middle division of the corolla 2-lobed, entire. 

 U Cultivated for its reputed medicinal properties. A handsome plant, grow- 

 ing in tufts 2f high, with delicate foliage and bright blue flowers. JL * S. Eur. 

 13. PYCNAN THEMUM, MX. BASIL. (Gr. -nvKvdg, dense, dvOog ; 

 alluding to the dense, capitate inflorescence.) Calyx tubular, 10 to 13- 

 striate, 5-toothed, teeth equal or subbilabiate, throat naked within ; up- 

 per lip of corolla nearly entire, lower lip trifid, middle lobe longest, all 

 ovate, obtuse, stamens 4, distant, subequal, anthers with parallel cells. 

 2 Erect, rigid herbs, all N. American. Verticils dense, many-flow- 

 ered. 



Calyx subbilabiat*, in flattish, often loose cymes. Leaves petiolate. (a) 

 | Calyx subequally cleft, in roundish, dense heads, (b) 



a Teeth of the calyx ovate, acute, awnless No. 1 



a Teeth of the calyx produced into bearded awns, shorter than corolla is us. 2 4 



b Calyx teeth and bracts with naked awns equaling the corolla Nos. 5, 6 



b Calyx shorter than the corolla. Heads panicled. Leaves subpetiolate.. .Xos. 7 9 

 Heads corymbed. Leaves sessile . . .Nos. 10 ]2 

 Head solitary, large No. 13 



1 P. albescens Torr. & Gr. Lvs. ovate or lance-ovate, subserrate, acute at each end, 

 subglabrous, whitened beneath, the upper whitened both sides, all petiolate ; fls. 

 separate, at length in little secund racemes; cal. teeth much shorter than its 

 tube. Ala. to La. St. 2 to 3f high, much branched. Lvs. 18'' to 3' long, often 

 puberulent beneath. Cymes many, in fruit 1' to 18" broad. Fls. as in all the 

 species, small, reddish. 



2 P. Tiillia Benth. Lcs. ovate or oblong, acute or acuminate, subserrate, and 

 with the stem viUous-pubescent, the floral whitened, fa. separate, at length in little 

 secund simple racemes; cal. teeth ending in subulate, bearded awns, about equal- 

 ing the tube. Mts. of E. Teun.. X. Car. to Ga. Lvs. as in No. 1, varying from 

 ovate to lanceolate. Lower lip of calyx somewhat shorter. 



3 P. incanum Ms. WILD BASIL. Lvs. oblong-ovate, acute, subserrate, rounded 

 at the base, petiolate, hoary -tomentous beneath, the floral whitened both sides ; 

 cymes dilated, not in racemes ; cal. teeth subequal, subulate, aristate, bearded at 

 apex. Rocky woods and barrens, Can., K Mid., W. States. St 2 to 4f high, 

 covered with soft, whitish down like the rest of the plant. Cymes all canescent, 

 1' or less broad. Cor. pale red, dotted with purple. Aug. (P. Loomisii, Nutt) 



4 P. clinopodioides Torr. & Gr. Lvs. oblong-lanceolate, acute at each 

 end, subserrate, smoothed above, pubescent beneath ; sts. and branches villoug- 

 pubescent ; cymes contracted and almost capitate, terminal and sessile at the upper 

 nodes ; bracts ciliate ; cal. teeth subulate, often tufted with hairs at apex. Dry 

 soils, N. Y., N. J., to Ind. Plant corymbously branched, 2 to 3f high, scarcely 

 canescent, never whitened. Lvs. 2 to 3' long. Cymes less than 6" broad. Aug., 

 Sept 



5 P. aristatum MX. Lvs. ovate-oblong, acute, subserrate, rounded at base, on short 

 petioles, and with the stem glabrous or minutely canescent-downy ; bracts rigid, 



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