I>IDTNAMIA. GYMNOSPEKMIA. 59 



A considerable genus, chiefly indigenous to the south 

 of Europe, but extending into Barbary and the Levant. 



418. CALAMINTHA. Tournefort. 



Calix after fluwering closed with villous 

 hairs. Orifice of the corolla somewliat inflated, 

 upper lip emarginate; lower 3-parted, interme- 

 diate segment entire, subcmarginate or crenu- 

 late. 



Herbaceous or sufFruticose; peduncles many flowered. 

 Species. 1. C- J\epeta. 2. caroliidana. Thymus caro- 

 Umanus. Mich. 2. p. 9. Suffruticose: leaves lanceolate- 

 ovate, entire, smooth and opaque; m.argin partly revolute; 

 verticills many-flowered, subpedunculate; upper lip of 

 the calix 3-toothed, obtuse. — v. v. A few miles from Au- 

 gusta in Georgia. Bractes obsolete; calix closed with a 

 tomentose villus; leaves sometimes partly oval. The 

 Thyinbra cnvoliniana of Walter, according to the observa- 

 tions of Mr. miiott, constitutes a new and distinct genus. 

 A small genua almost exclusively indigenous to the 

 south of Europe. 



419. TRICHOSTEMA. L. 



Calix resupinate. Upper lip of the coro^fa 

 falcate. Stamina very long and incurved. 



Annual; decussately branched; flowers solltai'v, each 

 bibracteate, at length developed in dichotomous panicles, 

 blue, sometimes white. — Seeds rugose. Aroma of the 

 v.-hole plant, balsamic, not pungent, very similar to that 

 oflsanthus. 



Species. 1. T. dichotoma. Leaves oblong-ovate, at- 

 tenuated towards the base, pubescent; stamina very long. 

 2. * linearis. Leaves linear, smooth, sessile, attenuated 

 somewhat at either end, dentures of the calix conspicu- 

 ously awned, stamina very long. Hab. With the above 

 in the sandy fields of New Jersey, also in the vicinity of 

 Philadelphia, in arid situations. After repeated compari- 

 sons I am perfectly satisfied of the specific distinction of 

 this plant, considered as a variety of the preceding by 

 Mr. Pursh; it is much rarer, and always smaller. The 

 leaves are invariably smooth and rather thick, while the 

 rest of the plant is covered with a viscid pubescence. 3. 

 hrachiata. See Isanthus. 



Of this genus there is another species in Cochinchina. 



