DIOY^TAMIA. ANGiaSPEl?MI.l. 51 



lower lip prominent. Stigma thick and bifid. 

 Capsule 2-celled, many-seeded. Seeds minute. 



Mostly herbaceous plants, with prominently quadrangu- 

 lar stems and opp^jsite leaves; peduncles solitary and ax- 

 illary, l-flowered, destitute of bractes; colour of the flow- 

 ers blue or yellow. 



Species. 1. M. rinjfe?is. 2- alatus. Nearly allied to 

 the preceding-. 3. biieus. 4. Leivisii. "Pii. 



A small genus of 6 species, partly indigenous to both 

 North and South Ana erica. 



438. CHELONE. L, 



Calix 5-parted, tribracteate. Corolla rin- 

 gent, vent!-icnse. Sterile f lament shorter than 

 the rest; anthers lanuginous. Capsule 2-celled, 

 2-vaIved. Seeds membranaceously margined. 



Herbaceous plants with opposite leaves; flowers subim- 

 bricately spiked, terminal; lower lip of the corolla inter- 

 nally bearded; capsule oval. (C. bavbata is a Pentstemon, 

 and therefore an exception to the artificial character.) 



Species. 1. C. glabra. Leaves lanceolate-oblong, 

 acuminate, serrate, subsessile, S:Ti()oth. /3 * lanceolata. 

 Leaves lanceolate, conspicuously acuminate, serrate, ses- 

 sile, under side pubescent; bractes scarcely dilated; se,^- 

 ments of the calix oblong. I'robably a distinct species. 

 2. obliqua. 3. Lyoiii. v. v. Near Wiimington, (N. Carol.) 



A North American genus. 



439. PENTSTEMON. Z. 



Calix 5-leaved. Corolla bilabiate, ventricoso. 

 The ffih sterile filament longer than the rest 

 and bearded on the upper side. Anthers smooth. 

 Capsule ovate, 2-cellod, 2-vaIved. Seeds nume- 

 rous, angular. 



Herbaceous and perennial plants, rarely shrubby or 

 suffiniticose; leaves oppo.sit.% entire, flowers paniculate, 

 purple, rarely scarlet, or blue; corolla usually bilabiate, 

 oblong and tubular; the upper lip shorter, 2-lobcd, and co- 

 arctate; orifice usually pulx-scent; in several other species, 

 however, the corolla appears nearly campanulate and with 

 the border almost equally 5-lobcd, in these the sterile 

 filament is less conspicuous. 



