244 CONVOLVULACE^. 



3. P. arislata Mich. : stem erect, weak, viscid-pubescent ; leaves linear oi 

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

 calyy 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 12—18 inches 

 high, simple. Leaves sometimes nearly linear, with the margins revolute. 

 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. ^j.. — Stems nu- 

 merous, prostrate and spreading, with erect branches. Uppenkleaves 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 ; caiiline 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. %. — Stem 6 — 8 inches 

 high. Leaves more or less pilose and ciliate on the margin. Flowers in a small 

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



6. P. subnlata Linn. : stem procumbent, cespitose, much branched, pu- 

 bescent; leaves linear-subulate, rigid, ciUate ; 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. %. — Root creeping. Stems 6 — 12 

 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 noXenos, 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. ^.—Stem 12—18 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. C ONVOLVUL ACE JS.— Bindweeds. 



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

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



