454 
BOTAOT. 
33. P. Ar.i!ii>rs, Nutt. F lii.i>li ; leuvos dftcn oblong- or ovate-lanceolate; the spicate panicle snb- 
verticillati ly iiiti-rinpted ; sepals laiieeulate, very viscid-pubescent ; corolla f long, purplisli-white, mod- 
erately ailated. tlie limb beardless; beard of the sterile lilament rather short, siibiuterrupted.— Upper 
Missouri to W. Texas. 
34. P. ciusTATrs, Xntt. Sepals attenuate, very hirsute ; corolla 1' long, violet, broadly dilated, the 
lower lip and sterile filament long-bearded. See page 219. 
35. P. Jamesii, Benth. 4'-l- high, ])uberulent ; leaves linear-laneeoLite, often deutienlate, rigid; 
cymelets 3-4-ilowered in a spieatc paniele; sepals viscid-pnberulent ; corolla 1' long or more, pale purple, 
al)rnptly ciunpaimlate almve, the lip and sterile filament less bearded.— Colorado to New Mexico and 
Texas. 
(2.) Leaves broader, usually serrate, the eauliue mostly clasping; panicle usually naked, loose- 
llowered. 
3<), P. Con.KA, Xntt. 1-2" high, viseid-puberuleut ; leaves ovate or oblong, sharply serrate or den- 
ticulate ; the few-tlowered panicle and oblong scarcely acute sepals viscid-pubescent; corolla 2' long, 
purplish-white, abruptly campauulate above, glabrous within; sterile filament bearded.— Kansas to 
Texas. 
37. P. l'Ai,Mi:i;i, Cray. 2-5° high, glaucous; haves ovate or oblong-lanceolate, sharply toothed; 
paniele glaudular-iiubci idcut ; sepals ovate, .smoothish ; coiolla li' long, very broad campauulate above ; 
sterile filament densely bearded. See page 220. 
3?<. P. DKiiTAi.is. Nutt. 3-.^)^ high, usually glalirous except the viscid tlowers ; leaves 3-G' long, 
hiiic.'ol.iit' or tbc iippri-.()v:itc-laii<-ci)l;ite, srri iilatc : corolla white, over V long, dilated above- the narrow 
tub<", the lolics sboi t : sterib' lilanient sparingly licarded. — (ieorgia and Florida. 
39. P. Trr.ii i.oias, Nutt. Slender; corolla tubular-funnelform ; filament less bearded. — Arkansas. 
{Ik) Sterile (ilanicnt longitudinally yellow-bearded, at least along the dilated apex ; corolla less di- 
lated, (cxcejit r. (jlaitcits,) more evidently bilabiate ; inflorescence not in crowded clusters. — East 
ol' tile Sii rr:is. 
(1.) Many-tlowcicd ; the naked panicle thy rsoid or racemose, the peduncles usually 3-several-flow- 
ered ; leaves sharply serridate or subeutire, the upper bract-like; upper lip commonly slightly 
shorter. 
40. P. rrni-.s. i.N>. Soland. 1-3 high, viscid-puliescent or nearly glabrous ; leaves lanceolate ; co- 
rolla luu plish-white, a little dilated ab(.ve, slightly obcompressed, with two folds under the lower lip, the 
throat sonu wbat closed ; sterile hlameut densely long-bearded.— From Canada aud the Saskatchewan to 
Florida and Texas. 
41. P. nrMii.is, Xutt. Low aud subglabious ; thyrsc more strict ; corolla deep-blue, long ; throat 
dilated and without folds. See ])age 220. 
42. P. <;i.Ai ors, Grab, tilabrous, except the viscid-pubescent intloroscence ; corolla 1' long, ventri- 
cose above t he b.-i^e, without tblds. Sei? paii'c 221. 
43. P. [[ u.i.ii, (iray. Dwarf; stems numerous; glabrous except the very miuutely glandular intlo- 
resconco; leaves entire, liuear-spatulate or linear; racennj simple, 4-10-flowered, with short pedicels; 
sepals ovate or oblong with scarious and often erose margins ; corolla deep-blue, about P long, ventri- 
cose-campaun!ate above the short base, the lips short ; sterile filament short-bearded.— Colorado. 
(.2.) 2-3-flowcred ; stems leafy to the sunnnit ; peduncles 1-flowered. 
44. I'. llAKiiuriM. Gray. Pwarf: stems nmny. pruinose-puberulent ; leaves entire, ovate or oblong, 
obtuse : sepjds vi,-ci(l-pubesc, nt. not seari.cis; corolla 7-9 ' long, purple, the tube slightly dilated, throat 
anil sterile rilanient bi arded.— Colorado. 
yv.) Sterile tilanu tit b. ardcd at the lop: corolla bilabiate, the tube scarcely or not at ail dilated ; 
l>auicle interrupte.l. tb,' ( ynielet> cr(»w(led ; llowers .V8", rarely 9-11" long. 
(1.^ Leaves ovate or ovate-lanceolate, usually s1iar],ly dentate, the upper subeordatc at base, clasp- 
ni- : sepals scarcely scarious on the nnugins : tluwers less crowded. 
4.-.. r. (jVATt--. Dougl. Pubendent: ler.ves broad; .sepals ovate or broad-lanceolate.— Oreoon to 
British Coliinibia. " 
4(;. v. fiM ixoM-s. Douj^l. Pnbescent: leaves . ,c-ious : the oft,„ subverticillate intloresceuce and 
lanceolate acnniinate sepals viscid-villons. — Oicou. 
(2.) Leaves ;;labrous, usually entire, lanceolate or oblong; sepals scarious, at least on the margins; 
palate nsualt\ bearde,! : th,- spike-like rhyrs(> snbvcrticillately interrupted. 
47. P. ATTKxrAifs, Lindl. H-2 high, lea\es rarely li-w-toothed ; infioresceuce villous or viscid- 
pubcseeni : cymes mostly sbort-pednncled ; sepals ovate-lanceolate, narrowly scarious; corolla over V 
long. — X. Idaho. 
