PUox. POLEMONIACE^. 131 



++ -H- Sterile shoots from the base creeping or decumbent : leaves comparatively broad, and with 

 the stems and calyx softly more or ie.^s viscid-pubescent: pedicels rather slender. 



' P. divaricata, L. Stems diffuse or ascending, the sterile shoots decumbent or somewhat 

 creeping and bearing ovate sessile leaves : cauline leaves oblong- or ovate-lanceolate, rather 

 acute : cyme open : calyx-teeth slenderly linear-subulate : lobes of the bluish or lavender- 

 colored (1 to li inches wide) corolla euneate-obcordate or barely emarginate (Bot. Mag. 

 t. 16-3, & P. Canadensis, Sweet, Brit. Fl. Gard. t. 221), or not rarely quite entire (var. 



— -Laphamii, Wood. P. glutinosa, Buckley in Am. Jour. Sci. xlv. 177, as to specimens, but 

 flowers not "red or scarlet.") — Damp woods, W, Canada and New York to Iowa, Florida 

 and Arkansas. Corolla with the sinuses open. Style (always 't ) very short. 



* P. reptans, Miohx. Stems weak and slender ; the sterile long and prostate or creeping, 

 runner-like, bearing obovate or roundish leaves with narrowed base ; the flowering erect, a 

 span or more high, bearing .3 or 4 pairs of oval or oblong mostly obtuse leaves : cyme sim- 

 ple, few-flowered : calyx-teeth linear-subulate : lobes of the purple or violet corolla round- 

 ish, mostly entire, about half the length of the tube. — Vent. Malm. t. 107. P. stolonifera, 

 Sims, Bot. Mag. t. 563 ; Sweet, Brit. Fl. Gard. ser. 2, t. 293. — Damp woods of the Alle- 

 ghany region and near it, Pennsylvania to Kentucky and Georgia. Corolla-tube an inch 

 long ; style long, the stigmas and some of the stamens often more or less projecting. 

 * * * Stems diffuse and branching, slender, low (a span high): flowers scattered or barely 

 cvmulose, peduncled ; the peduncles often elongated : lobes of the corolla narrowly cuneate and 

 bifid : calj'x-lobes subulate-lanceolate : fl. spring. 



' P. bifida, Beck. Minutely pubescent : lea.ves linear (an inch or two long, a line or two 

 wide), glabrate: lobes of the pale violet-purple corolla 2- (rarely 3-) cleft to or below the 

 mid'lle into oblong or nearly linear diverging segments. — Am. Jour. Sci. xL 167 ; Gray, 

 Man. ed. 5, 373. — Prairies of Illinois and Missouri. 

 P. Stellaria, Gray. Very glabrous : leaves barely somewhat ciliate at base, linear (an 

 inch or two long, a line or more wide), acute, rather rigid: flowers scattered, mostly long- 

 peduncled: lobes of the "pale blue or almost white " corolla bifid at the apex into barely 

 oblong lobes. — Proc. Am. Acad. 1. c. 2-52. — Cliffs of Kentucky River (above Lexington 1 ), 

 in fissures of the most precipitous rocks, Shoi-t. S. Illinois, G. H. French, &c. Bases of the 

 filiform aijid tufted or creeping stems rigid and persistent. 



§ 2. Suffruticulose and creeping-cespitose, evergreen, east of the ]Mis?is,sippi, 



with mostly crowded and fascicled subulate and rigid leaves : lobes of the corolla 



at most obcordate : fl. early spring. 

 ■ P. SUbulata, L. (Geouxd or Moss Pink.) Depressed, forming broad mats, pubescent, 

 when old glabrate ; leaves squarrose-spreading, ciliate, varying from lanceolate- or subu- 

 late-linear to almost acerose, 4 to 10 lines long : flowers mostly slender-pedicelled : caly.x- 

 lobes subulate : lobes of the (pink, purple, or white) corolla obcordate or rarely entire : 

 ovules solitary or in pairs (or rarely 3) in each cell. (Style generally long and ovules 

 solitary.) — Jacq. Fragm. t. 44 ; Bot. Mag. t. 411, & t. 41-5 (as setncea). P. sefacea, L., form 

 with slender leaves. P. nivalis, Lodd. Bot. Cab. t. 780; Sweet, Brit. Fl. Gard. 1. 18.5: style 

 short; and ovules commonly (but not always) 2 or rarely 3 in each cell, and corolla white. 

 P. Hentzii, Nutt., a state of the last with lobes of the corolla entire or nearly so. P. nrix- 

 tata, Lodd. I.e. 1. 1731, a white-flowered variety. — Rocky bare hills and sandy banks, 

 S. Xew York to Michigan, Kentucky and Florida. Very variable species. 

 P. pROCUiiBENS, Lehm. (Ind. Sem. Hamb. 1828 ; Sweet, Brit. Fl. Gard. ser. 2, t. 7 ; Lodd. 



Cab. t. 1722 ; P. subulata, var. latifolia, Benth. in DC. 1. c), is unknown as a wild plant, and 



is apparently a hybrid between P. subulata and P. amasna. 



§ 3. Suffruticulose or sufErutescent, rarely herbaceous to the ground, natives of 

 the Rocky Mountain region and westward, chiefly with narrow or minute and 

 thickish-margined leaves, and branches or peduncles mostly one-flowered, in 

 spring and summer. (Species most difficult, passing into one another.) 



* Denselv cespitose and depressed, mostly forming cushion-like evergreen mats or tufts ; the short 

 leaves ("li to 5 lines long) crowded up to the solitary and sessile (or in the last species short-pe- 

 duncled) "flowers, and also fascicled, scarious-connate at base, the old ones marcescent: ovules 

 solitary in each cell. The earlier species of the series most depressed, pulvinate, and imbricate- 

 leaved ; the last looser, longer-leaved and approaching the next subsection. 



