286 PENTANDRIA— MONOGYNIA. Polemonium. 

 105. POLEMONIUM. Jacob's Ladder. 



Linn. Gen. 87. Juss. 136. Fl.Br. 234. Tourn. t. 61. Lam.t.106. 



Gcertn. t. 62. 

 Nat. Ord. Campanacecs. Linn. 29. Polemonia. Juss. 44. 



Cal. inferior, of 1 leaf, cup-shaped, divided half way into 5 

 broad, rather acute, segments, permanent. Cor. of 1 petal, 

 wheel-shaped; tube very short, closed at the top by 5 con- 

 vex, downy valves ; limb large, dilated, spreading, slightly 

 concave, in 5 deep, roundish-ovate, obtuse, equal segments. 

 Filam. awl-shaped, inclining, shorter than the corolla, in- 

 serted into the tube, between the valves, and opposite to 

 each segment of the limb, ylnth. terminal, erect, oblong; 

 roundish after bursting. Germ, ovate, acute. Style cy- 

 lindrical, the length of the stamens. Stigma in 3 acute, 

 revolute segments. Caj^s. ovate, with 3 blunt angles, in- 

 vested with the calj'x, of 3 cells, and 3 valves, separating 

 at the top ; partitions contrary to the valves. Seeds nu- 

 merous, oblong, triangular, attached to the innermost 

 angle of each cell. 



Herbaceous, with mostly pinnate leaves, and terminal, pa- 

 nicled, blue or purplish, powers. 



1 . P. ccETuleum. Blue Jacob's Ladder. Greek Va- 

 lerian. 

 Leaves pinnate. Flowers erect. Root fibrous. 



P. cseruleum. Linn. Sp. PI. 230. Willd. v. 1. 886. Fl. Br. 234, 

 Engl. Bot. v.l.t.14. Hook. Scot. 74. Fl. Dan. t. 255. 



P. n. 665. Hull. Hist. v. 1. 296. 



P. vulgare cseruleum. Rail Sijn. 288. 



Valeriana grseca. Dad. Fempt.3Dl.f. 352. Ger.Em.l076.f. Bauli. 

 Hist. v.3.p.2.2\2.f. 



In bushy places, in the north of England,, and south of Scotlandjbut 

 rare. 



At Malham Cove, in Craven, Yorkshire , also in other parts of 

 that neighbourhood, first found by Dr. Martin Lister ; and sub- 

 sequently by Dr. Richardson. Raii Sijn. At the Lover's Leap, 

 Buxton. Rev. Mr. Wood. Near Bakewell, Derbyshire ; Mr. 

 Whately ; and in Gordale, Yorkshire ; Mr. Gough. Withering. 

 Two miles east of Queen's Ferry, on the coast ; Mr. Maughan ; 

 in Arnistone woods ; Mr. Arnott ; Delvine woods ; Mr, Mur- 

 ray. Hooker. 



Perennial. Ju7ie. 



Root fibrous, not creeping. Herb nearly smooth, 1^ or 2 feet high. 

 Stem angular, leafy, hollow, often reddish, unbranched; pa- 



