244 CONVOLVULACEyK. 



3. P. aristata Mich. : stem erect, weak, viscid-pubescent ; leraves linear or 

 linear-lanceolate, pubescent ; corymb crowded, few-flowered ; teeth of the 

 calyx pubescent, very long, awn-like ; lobes of the corolla obovate, entire. 

 P. pilosa Linn. 



Wet woods. N. J. to Car. W. to Miss. June. %.Stem 1218 inches 

 high, simple. Leaves sometimes nearly linear, with the margins re volute. 

 Flowers terminal, loosely corymbose, on villous peduncles, pale purple or white. 



Hairy Phlox. 



4. P. divaricata Linn. : stem decumbent, pubescent ; leaves oval-lan- 

 ceolate or lance-ovate, acute, membranaceous, ciliate on the margin ; pan- 

 icle loose, corymbose, few-flowered ; teeth of the calyx linear-subulate ; 

 lobes of the corolla slightly obcordate. 



Banks of streams. Can. to Flor. W. to Miss. May, June. 1|- Stems nu- 

 merous, prostrate and spreading, with erect branches. Upper leaves almost 

 clasping and often alternate. Flowers few, in a loose terminal somewhat tri- 

 chotomous panicle, bluish or dark purple. Divaricate Phlox. 



5. P. reptans Mich. : stem erect, with procumbent suckers at base, pu- 

 bescent; radical leaves spatulate-obovate ; cauline oval-lanceolate, sessile ; 

 corymb few-flowered, divaricate ; teeth of the calyx subulate, reflexed ; 

 lobes of the corolla obovate, entire. P. stolonifera Pursh. 



Rocky places. Penn. to Car. W. to Ken. June. 1\.. Stem 68 inches 

 high. Leaves more or less pilo?e and ciliate on the margin. Flowers in a small 

 corymb, blue, with a purple centre. Creeping Phlox. 



G. P. siibulata Linn. : stem procumbent, cespitose, much branched, pu- 

 bescent; leaves linear-subulate, rigid, ciliate ; corymb few-flowered; teeth 

 of the calyx short, subulate ; lobes of the corolla wedgeform, emarginate. 

 P. setacea Linn. 



Rocky places. N. J. to Car. April, May. 1].. Root creeping. Stems 612 

 inches long, with numerous assurgent branches 2 or 3 inches high. Leaves half 

 an inch long, with the rudiments of smaller ones or of branches in the axils. 

 Flowers pink or nearly white, with a purple centre. Very abundant near New 

 Brunswick, N. J. Mountain Pink. 



2. POLEMONIUM. Linn. Greek Valerian. 



(From the Greek TroX^os , war ; which is said by Pliny to have been waged by 

 two kings for the honor of its discovery.) 



Calyx campanulate, 5-cleft. Corolla campanulate-rotate ; 

 tube very short, closed by the dilated bases of the filaments. 

 Capsule ovoid, obtuse, the cells many-seeded. 



P. reptans Linn. : stem weak, erect or declined ; leaves pinnate ; leafets 

 7 9, (rarely 11,) ovate-lanceolate, acute; flowers terminal, nodding. 



Moist woods. N. Y. to Car. W. to Miss. May. QL Stem 1218 inches 

 high, nearly smooth, branching. Leafets mostly opposite, the common petiole 

 winged. Flowers blue, in small nodding corymbs at the end of the branches. 



Jacob's Ladder. 



ORDER LXXXV. CONVOLVULACE^E. BINDWEEDS. 



Calyx persistent, in 5 divisions, remarkably imbricated. Co- 

 rolla reeoilar, deciduous ; the limb 5-lobed, plaited ; the tube 



