PENTANDRIA. MONOGYNIA. 127 



above, constricted at the base. Stamina 5, inclosed in 

 the tube of the corolla, unequal, anthers roundish. Style 

 filiform, about the leng'th of the tube; stigma very short, 

 trifid. Capsule obovate, shorter than the calix, with 3 

 obtuse angles, and as many intermediate salient furrows, 

 cells 3, seeds 3, valves 3, obcordate, carthaceous; recepta- 

 cle 3.sided, margined, margins parallel to the dissepiments 

 of the valves. Seed cylindric-oblong, coated with a mu- 

 cilaginous, insoluble, fibrous, and tenacious integument, 

 only visible after immersion in water. 



Hab. Near the banks of the Missouri, about the conflu- 

 ence of Shian river, and in the vicinity of the Arikaree vil- 

 lage, in moist places. Flowering in June; flower violace- 

 ous. It appears to be the same plant figured by Cavanil- 

 les, and first discovered in Chili. In upper Louisiana, or 

 above the confluence of the Platte and the Missouri, we 

 no longer meet with any species of Phlox. To this genus 

 probably also belongs Phlox biflora of Chili, which is also 

 annual, but the habit appears to be different. 



195. POLEMONIUM. L, (Jacob's ladder.) 

 Calix subcampanulate, 5-cleft. Corolla some- 

 what rotate, 5-Iohed, tube short, dosed at its 

 base by 5 staminiferous valves or scales. Stig- 

 ma trifid. Capsule 3 celled, superior. 



Herbaceous; leaves alternate, pseudo pinnate; flowers 

 somewhat corymbose, terminal, blue, varying to white. 



Species. 1. P. reptans. Stem leaves 3 and 4 pair 

 (from 7 to 9) margin of the common petiole subciliate; par- 

 tial leaves elliptic-ovate, 3-nerved, flowers nutant, capsule 

 ^ (by abortion) mostly 3-seeded. — The seeds of this piant, 



after maceration, exhibit something analogous to that of 

 the preceding genus, but the mucilaginous fibres are at- 

 taclied only to one extremity. 



This genus appears as yet to contain but 2 genuine spe- 

 cies; the other is common to Europe and Asia. 



196. SOLANUM. Z. (Nigbt-sbade.) . 



Calix 5-cleft, persistent. Corolla rotate, or 

 campanulate, 5-lobed, plaited. Jnthers partly 

 united, emiting the pollen by 2 pores at the 

 point. Berry 2-celied, many-seeded. 



Stem herbaceous or shrubby, naked or aculeate, rarely 

 spiny; leaves simple, often siimately Ipbed, sometimes un- 



