APPEIiTDIX. 
463 
9. p. EEPTAX8, Michx. Pennsylvania and Kentucky to Georgia ; Arkansas, (Nuttall.) 
* * * Few-flowered, low, diffuse; leaves linear ; corolla pale-violet, with 2-cleft cuneate lobes, the 
segments narrow. 
10. P. BIFIDA, Beck. Pubescent, with the leaves sometimes jflabrate; coiolhi-lobes cleft at least to 
the middle, the divisions nearly linear. — Illinois and Missouri. 
11. P. Stp:llaria, Gray. Glabrous, cagspitose, somewhat perennial at base ; leaves nan-ow-linear 
and rather rigid, the upper slightly ciliate at base ; peduncles elongated, mostly 1-flowered ; corolla pale- 
blue or nearly white, the lobes bifid with short-oblong segments, — Cliffs of the Kentuckv River, only by 
Dr. Short. 
$ 2. Slightly snffrutfiscent jieronnial eastern species, with subulate fascicled evergreon leaves ; ovules 
1-2 in each cell ; corolla lobes only obcordate. 
12. P. SUEULATA, L. Usually with a long style and solitary ovules.— Soutiu jii ^Cw York to Michi- 
gan, and south to Florida and Mississippi. 
§ 3. Species of the Rocky Mts. and westward, or arctic, somewhat woody or rarely herbaceous at 
base, the ovules 1-3 in each cell ; branches 1-few-flowered ; leaves mostly narrow or small, usually 
more or less cartilaginous-thickened (or rather revolute) on th(* margin. 
* Matted-csespitose snbshrubby evergreen perennials; Ii-aves siioif, soini't imes very small, crowded 
or imbricated and fascicled n]> to the very flowers, scarious-ccinuMtc at hase. rlu- <il(ii r ones marces- 
cent ; flowers solitary, sessile, (in P. Bouglasii sometimes short-pt-'duncled ;) i)\ ulcs .solitary, . 
(a.) Leaves with webby hairs, at least upon tlie margin. 
(1.) In mossUke cushions, the very short broadish or scalelilcc leaves imbricated, soft, and merely 
mucronate ; corolla-lobes entire. 
13. P. RiCHARDSOXii, Hook. Eather loosely matted; leaves oblong-lanoeolate, ;i bui-, Muncwliat 
sparingly woolly, with thickened margins, soon reflexed, imbricated, loosely spreading win li old ; ( ,,ro]lu- 
tube half longer than the calyx, the lobes broadly cuuoate-obovate, 3" long. — Arctic Coast. 
14. P. BKYOit)ES, Nutt. More densely matted and very small, with an ahiiudaut very si.it wool : 
branchlets separated; leaves scalelike, closely imbricate in four rows, ovati- or triaii^niai-Iaiu'cobite. 
IV' long, very close and appressed even when old, the margins subiutlexed ; coiolia-tube a litth^ exceed- 
ing the calyx, the cuneate lobes 1*" long.— Rocky Mts. of W. Wyoming, (Xuttall.) 
15. P. 5if SCOTDF.s, Xutt. Resembling the last; branches short and very crowded ; leaves less strictly 
4-ranked, more sparingly woolly, ovatc-lauccolate, \i" long, slightly mucronate ; calyx e(iiialiiig the co- 
rolla-tube. — Rocky Mts., only by Wyeth. 
(2.) Leaves more rigid, subulate, somewhat accrose, 3-4" long, less closely imbricated ; (lowers 
white. 
16. P. HoODli, Rich. Rather sparingly woolly, glabrate ; leaves erect; corolla-tube li^f .m-. ding 
the calyx, the lobes obovate, entire, 2-21" long.— Montaria and the .^askateln uau ivuioii. 
17. P. CANESCENS, T. & G. More woolly and leaves spreading; eiinjlla more or : , ilie 
calyx, the lobes 3-4" long, entire or emarginate. See page 2o9. 
(&.) Leaves more rigid, hirsute- or roughish-ciliate on the margins, at least at I.a^r. or .soiuetiinos 
naked. 
18. P. C.ESl'-iTOSA, Nntt. Leaves linear-subulate or oblong-Iinear, rigid, close, ciliat<-. (.fiierwisc 
glabrous or sparingly glandular ; corolla-tube a little oxceedin-- i ! ■ x- t i ■ 
19. P. DouGLASii, Hook. Pubescent or nearly j;!ai)roi: usually 
spreading and less close, the margins either naked or ciliate a i oa ^. . i . . .. erding 
the calyx. See page 260. 
* * Showy, from a many-branched or loosely cajspitose woody or sometimes i 
usually longer, linear or lanceolate, rarely subo%'ate, loose and not faseir, 
flowers solitary or subc yniose, rather long pednricled. 
(a.) Styl- <1. 
(1.) Arctic; leaves and loosi i 
20. P. SiBiRiCA, L. 2-4'high, hairy-pubescent: leaves nari<iw-ln i lions on the 
margin ; peduncles naked, 1-flowered ; corolla-tube ciualiny or a little .ate or retuse 
lobes and the calyx ; ovules in pairs.— Kotzebue Sound and E. Sil>eria. 
(2.) Of temperate regions; the leaves and erect or ascending woody-l a - •! - i-i' . ' : < ""'la- 
tube exceeding the narrow-subulate calyx-lobes. The first two 'id 
the calyx usually angled- 
