338 roi.i:MO.\iACE-«. (i'ommonium famii.v.) 



closc-floworcd, forming a rorymbose or pyramidal panicle ; ralyx-tccth lonp, 

 bristle-iioiiitcd ; lobes of tlic corolla rouud-obovate. (1*. undulata, J^ursk. 1'. 

 cordata, J-'ll.?) — Var. acuminata. (P. acuminata, Pursh.) Leaves acuminate 

 at each end, the lower surAico, like the stem, pubescent ; calyx-lobes siiorlcr. — 

 Kicli woods iu the upper districts of Geor<:ia, and northward. June and July. 



— Stem 2° -4° hi;|li. Leaves 2' -4' long, thin, strongly veined beneath, the 

 primary veins uniting within the margins. Corolla purple or white. 



2. P. maculata, L. Stem erect, pubescent and roughish, especially above, 

 rarely branched, often spotted with purple; leaves rather rigid, lanceolate, acute ; 

 the lowest often linear and elongated, the upper broader and rounded at the base, 

 rough on the margins ; cymes closely many-flojvcred, lateral aixl terminal, form- 

 ing an oblong or pyramidal panicle ; calyx-lobes straight, acute ; tube of the 

 corolla slender, curved ; the lol)es obovate. (P. pyramidalis, ^';«(V/(. P. suavco- 

 lens, ,1/7.) — Var. mtida. (P. nitida, EIL?) Stem rigid, rough; leaves nu- 

 merous, uniform, ovatc-oblong, mostly cordate at the base; calyx-lobes acuminate. 



— Low woods, Florida to ^lississippi, and northward. June and July. — Stem 

 2° - 3° high. Leaves :2'- 4' long. Corolla purple or occasionally white. 



3. P. Carolina, L. Smooth ; stem (1° high) erect or ascending, sparingly 

 briinchcd ; leaves varying from ovate to lanceolate, acute or acuminate, the upper 

 ones often rounded or slightly cordate at the base; panicle corymbose, few-flow 

 ercd ; calyx-lobes lanceolate, short-acuminate. (P. triflora, Michx.?) — North 

 Carolina, Ben/liam. 



4. P. glaberrima, L. Smooth ; stem erect or ascending, sparingly branched 

 above ; leaves lanceolate or linear, acute, the lower tapering to the base, the upper 

 broader and rounded at the base ; cymes usually 3, terminal, few-flowcrcd ; calyx ■ 

 lobes lanceolate, acute; corolla large, with the lobes wedgc-obovate. — JMouii- 

 tains of Xorth (Carolina and Tennessee, and northward. Ju'y. — Stem l°-2° 

 high. Leaves 3' - 4' long. Pedicels as long as the calyx. Corolla 1' long, pale 

 purple. 



5. P. reptans, Michx. Pubescent or smoothish ; stem low, slender, simple, 

 bearing long runners at the base. Stem-leaves few, distant, lanceolate, rather 

 obtuse ; the radical ones and those on the runners larger, spatulate or obovate, 

 petioled ; cyme terminal, few-flowered ; calyx-lobes linear-sul)ulatc,much shorter 

 than the spreading or recurved pedicels ; corolla-lobes obovate, shorter than the 

 slender straight tube ; anthers slightly exscrted. — Damp sliady woods near 

 Washington, Wilkes Co , Georgia, and northward along the mountains. May 

 and June— Stem 6'- 10' high. Leaves 6" - 8'' long, the radical ones I' -3 

 long. Corolla 1' long, purple. 



* * Sli//c short, satrce/i/ longer titan the ovary : raJi/x-teeth linedr-sulmlate, tapering 

 into an awn-lihe point : lobes of the corolla often notched: stems pubescent. 



6. P. divaricata, L. Softly pubescent and more or less glandular; .stems 

 ascending from a decumbent base, simple ; leaves distant, lanceolate or ovate- 

 lanceolate, rather acute, mostly rounded at the base ; cymes corymbose, loo.sely- 

 flowered ; lobes of the corolla obovate, notched or entire, as long as the tube, 

 and twice as long as the calyx. — Woods and banks, Florida to Mississiipi, and 



