UIDTNAMIA. AXGIOSPERMIA, 55 



Herbaceous; stem simple, leaves alternate, sessile, p?.l- 

 mateh' ciefi; flowers sotiuu\ , axillary, sessile, rriai cescent, 

 sometimes subtended by coloured bractes. — (Calix Irre- 

 g-nlar, long- and tubular, in ii. cocciuea only 2-i<)bed, lobes 

 retuse, coloured, and slii^lilly einaruinate; corolla constant 

 in form, slenderly tubular, of an obscure and g-reenisli 

 yellow, upper lip 2 or 3 times the length of the lower or.e, 

 entire; lower lip trifid, segnients plaited and acute. Sta- 

 mina seated upon nearly the same line of the orifice; 

 anthers smooUi, long: and linear, all cohering- together, 

 producing- a disk which is poliniferous at its surface, in 

 consequence of this c(;herence the 2 lobes of each anther 

 arc uiuqual, the inner lobe being- always shorter. Style 

 ver\' long- and filiform; sligma scarcely biiohed. Capsule 

 ovate, acute, compressed antl (/blique, in the earliest stage 

 of the g-erm bursting- the base of the corolla tube. Seeds 

 small, each inclosed in a reticulated membranous inflated 

 vesicle, attaclied to the receptacular margins of the 

 transveise septa. Proper receptacle obsolete. Is this 

 genus as distinct from Cacii'r.cja as Irom liartsla?) 



Species. 1. E. cocciuea- Annual or biennial; leaves 

 and coloured bractes divai-icately trifid; calix bifid, nearly 

 equal with the corolla, segments retuse and emarginate. 

 {Bartsia coccinea, L.) 2. * gramlfiora. Perennial; leaves 

 and uncoloured bractes mostly tritid, segment divaricate; 

 calix 4-ciefi, jjartly obliq-iic; corolla longer than the ca- 

 lix, segments of the lower lip acuminate. Hab. On the 

 plains of the Missouri from ti.e confluence of the river 

 Platte to the Mountains, con.mei;; also near the Prairie 

 du Chien, Mississipp. Flowering from April to May. Cas. 

 tilkjii sessiUfiova. Ph. 2. p. 7C8. Obs. Stem simple, and with 

 the leaves pubescent. Flow ers pubescent, slenderly tubu- 

 lar and curved, 2 lo 3 inches long, greenisli-wliite, a liitle 

 rosaceous; upper lip neai-ly green, attenuated; segments 

 of the lower hp linear-lanceolate, acuminate, shorter than 

 the upper, plaited. St\le and stanriina smooth, enfolded 

 by the upper li]), exseited. Capsule and seed as in E. coc 

 chiea. — A very distinct species, but inseparable in genus 

 from the preceding, notwithstanding the disparity of the 

 calix, in every im{)ortant particular besides they agree; 

 other species will probably one day be discovered, con- 

 necting these 2 more closely. 



243. BARTSIA. L, 



Calix 4-cleft. Corolla ringent; upper lip con- 

 cave, entire, the lower trifid and reflected. Jin- 



