DIDYxVAMlA. ANGIOSPERMIA.. 53 



from adopting' it in preference to that whicli I had for- 

 merly given, previous to my becoming acquainted witli 

 the flower, which Mr. Shepherd obtained from a plant 

 that I had presented to the Botanic g-arden of Liverpool. 

 Tlie plant somewhat resembles P. barbatum of Mexico 

 (Chehne barbata) but the flower is tubular-campanulate, 

 with an almost equally 5-cleft, border, and of a beautiful 

 azure blue, without the smallest tinge of violeti a color 

 so prevalent in all the other species. 



8. * aUiidtim. Stem very low; leaves ovate-lanceolate; 

 Siibserrulato, smooth and sessile; flowers partly fas- 

 ciculated, axillary and terminal; sterde filament slen- 

 derly and interruptedly bearded; corolla internally smooth 

 and partly tubular, border almost equally o-cleft, spread- 

 ing-; leave<?of tiie calix linear-lanceolate, pubescent. Hab. 

 On the plains of the Missouri, com.mon, from the conflu- 

 ence of tiie river Platte to the Mountains. P. teretijlora. 

 Fras. Catal. 1813. The humblest species of the genus, 

 rarely exceeding 6 or 8 inches in height; stem somewhat 

 angular. Leaves approximating. Flowers usually white. 



9. * grand'-fiorum. Fras. Catal, 1813. Very smooth and 

 glaucous; leaves entire; radical suboval, cauline amplexi- 

 eaule, roundish-oval, with an abrupt point; flowers large, 

 mostly solitary and axillary; corolla campanulate, border 

 5-lobcd, spreading; sterile filament partly pubescent at the 

 summit. P. Bradbuni. I*ii. Hab. On the plains of the 

 Missouri, common, tVom the onfluence of the river 



^Platte to the Mountains; also near the Prairie du Chien, 

 Miss sr^ippi. A splendid and beautiful species, about 3 

 feet high, flowers variously tinged, as large as those of 

 Dl^italia jr.irpnrea which they not unaptly resemble. 



A North American genus and probably an extensive 

 one. 



440. MARTYNIA. h, 



Ca//a; o-cIeft. 6'oro//a riiij^ent. Capsule Wg- 

 neous, corticate, 4-celk'(U 2-va!ved, each of the 

 valves terminating in a hooked rostrum. 



Annual plants with opposite or alternate leaves; flowers 

 racemose axillary or terminal. 



Species. 1. M. proboscidea. Common around Lew- 

 istown in Delaware, also on the banks of the Ohio and Mis- 

 siss ppi. The whole plant is remarkably viscid, the singu- 

 lar form of its large fruit has obtained it the name of 

 Guckold's-IIorns. 



E 2 



