Azalea.2 PENTANDRIA — MONOGYNIA. 99 



24. Convolvulus. Linn. Bindweed. 



1. C. arvensis, L. {small Bmdiveed) ; stem climbing-, leaves 

 sagittate their lobes acute, peduncles mostly single-flowered, 

 bracteas minute distant from the flowers. E. Bot. t. 312. 



._ Corn-fields, hedges, &c. especially in a liuht soil. Fl. June, July, If i 

 — Flowers rutlicr small, rose-coloured. Root running very deep into 

 the ground and difficult of extirpation. 



2. C. septum, L. {great Bindweed) ; stem climbing, leaves 

 sagittate their lobes truncate, peduncles 4-sided single-flowered, 

 bracteas large heart-shaped close to the flower. E. Bot. t. 313. 

 — Calystegia, Br. 



Moist woods and hedges. Fl. July, Aug. If. — Much larger than the 

 last in every part. Flowers very large, showy, pure white, (sometimes 

 striped with pink. Wilson.) 



3. C. Soldanella, L. (sea-side Bindweed) ; stem prostrate, 

 leaves reniform fleshy, peduncles 4-sided single-flowered their 

 angles winged, bracteas large ovate close to the calyx. E. Bot. 

 t. 314. — Calijsteyia, Br. 



Sea-shore in sandy places, frequent. Fl. June — Aug. If. — 7?oo< long, 

 creeping. Flowers few, large, rose-coloured. Capsides 1 -celled. 



25. PoLEMoNiuM. Linn. Jacob's Ladder. 



1. P. crsruleiim, L. (blue Jacob's Ladder) ; leaves pinnated 

 glabrous, leaflets oblongo-lanceolate. E. Bot. t. 14. 



Banks and bushy places, rare ; chietly found in the north. In Derby- 

 shire and Yorkshire. About Queensferry, Arniston and Delvine woods, 

 Scotland. Knockmaron Hill, Ireland. FL June, July. If. — 1 — 2 feet 

 high. Stem angular. Flowers large, blue, sometimes white. 



26. Azalea. Linn, Azalea. 



1. A. procumhens, L. (trailing Azalea). E. Bot. t. 865. — 

 ChamcEledon, Link. — Loiseleuria, Desvaux. 



Dry moory ground, on most of the Scottish Highland mountains, 

 among grass and moss ; especially abundant in tlie north and nowhere 

 perhaps more plentiful than on the Cairngorura range, where it forms 

 large dark green patches. Fl. May, June. Tj . — A low s/iruh, with very 

 woody tortuous stems, and crowded leafy branches. Leaves small, 

 almost like those of Thyme, but quite smooth and glossy above, rigid, 

 channelled, their margins remarkably revolute ; midrib below broad and 

 prominent. Flowers in short terminal racemes. Pedicels with short 

 ovate bracteas at the base, swollen upwards. Cut. purple, deeply 5- 

 sometimes 6-pariite, segments oblong, fleshy. Corolla flesh-coloured, 

 subcampanulate, wi+h 5 oblong, moderately spreading, sometimes un- 

 equal, obtuse segments. Stamens inserted upon a fleshy disk or base to 

 the germen, a little shorter than tlie corolla. Anthers of -2 oval cells,. 

 opening distinctly by a longitudinal fissure, lead-coloured. Germen 

 upon a fleshy base or disk scarcely broader than itself, ovate, 2- or 3- 

 celled. Style about equal to it in length ; stigma capitate, obscurely 

 lobed. Capsule broadly ovate, with a somewhat spongy coat, purplish- 

 brown, opening by 2 or 3 valves, according as the cells are 2 or 3 ; the 

 margins of the valves entering into the capsule and thus forming the dis- 



