362 Mr. J. Miers on the genus Polydiclis. 



reti, angulo basali spectante, cotyledonibus ovatis plano-con- 

 vexis duplo longiore. — Herbse Americte septentrionalis viscoso- 

 pubescentes, odore fcetido ; folia alterna, ovato-lanceolata, ellip- 

 tica, utrinque acuminata', flores axillares, albidi, reticulato- 

 picti. 



1. Polydiclis multivalvis. Nicotiana multivalvi s, Lindl. Bot. Reg. 

 tab. 833 ; Don, Diet. iv. 466 ; — viscido-pilosa, foliis earnosis, 

 ovato-lanceolatis, breviter petiolatis, utrinque acuminatis, in- 

 tegris, margine undulatis, demum fere glabris ; floribus soli- 

 tariis, paucis, axillaribus ; corolla magna, limbo explanato, al- 

 bida, venis purpureis picta, 5-6-mera. — Columbia River, in 

 locis saxosis. 



This plant is said to be of a strong hircose odour and viscid ; 

 the leaves of the specimens I have seen are 6 inches long, 2^ 

 inches broad, on a petiole not longer than \ or ± ah inch, which, 

 together with the midrib, is fleshy, broad, and semiterete. The 

 peduncle is scarcely more than \ inch long; the calyx about 

 •J inch in length, and § inch diameter in its broadest part, con- 

 tracted above, and divided into five, sometimes six very acute lan- 

 ceolate teeth, one-third of its entire length ; it has ten or twelve 

 prominent nervures with intermediate reticulations. The tube of 

 the corolla is cylindrical, somewhat swollen at the base, 1| inch 

 long, ^ inch diameter ; the border is very broad, expanded, about 

 2 inches across, and divided to nearly half its breadth into five, 

 sometimes six triangular obtuse segments : it is of a whitish 

 colour, with anastomosing purplish lines. The stamens are equal 

 in number to the segments of the corolla, and the anthers rise 

 to the mouth of the tube. The berry is large, globular, 1 1 inch 

 diameter, marked with deep grooves, corresponding with the 

 number of cells, which vary from six to twelve ; it is umbilicate 

 at the summit, and crowned by the persistent style, its lower 

 half being closely invested by the swollen calyx. 



2. Polydiclis quadrivalvis. Nicotiana quadrivalvis, Pursh, Fl. 

 Am. Sept. i. 141; Lehm. Hist. Nicot. c. 45. tab. 4; Don, 

 Diet. iv. 466 ; Bot. Mag. tab. 1778 ; — viscido-pilosa, caule her- 

 baceo, ramoso ; foliis oblongis, utrinque attenuatis, integris, 

 superioribus lanceolatis, subsessilibus ; floribus 5-meris, ovario 

 3-4-loculari, calyce pilosiusculo, corolla genitalibusque glabris, 

 stigmate 3-4-lobo. — Missouri. 



The leaves of this species appear somewhat smaller than in the 

 foregoing species, and are slightly ciliate on the margin, with 

 jointed articulated hairs ; the corolla is also much smaller, and 

 the globular, usually 4-celled capsule, wholly enclosed in the per- 

 sistent calyx, is about half an inch in diameter. 





