H E L 



H E L 



* largCj depressed, green glands, uncertain in 

 number, black when drica. The flowers have 

 no scent. It is a native of the island of Baru. 

 The second species is likewise a small upright 

 tree, about twelve feet high, branchinc; but 

 little: the vounger branches, peduncles, calyxes, 

 and leaves tomentose : the leaves peiioled, al- 

 ternate, acute : the stipules in pairs, bristle- 

 shaped : the peduncles nuiny-flowered, termi- 

 nating, glandular. It is a native of Jamaica, 

 flowering here in June and July. 



Cjdttue. — In these plants the increase is ef- 

 fected by seeds, which must be sown upon a 

 hot-bed in the spring, and when the plants are 

 come up sutticieiuly strong, they should be each 

 planted in a separate small pot tilled with light 

 earth, being plunged into a moderate hot-bed 

 of tan, due shade from the sun being given till 

 thev have taken new root. They should after- 

 wards be treated in the same w ay as other tender 

 shrubs, raising the glasses every day in propor- 

 tion to the weather, that they may have fresh 

 air. In summer the plants should remain un- 

 der the frames, if there is sulficient height ; but 

 in autumn be replunged into the tan-bed in the 

 stove, where they should always remain, being 

 careful to shift them into larger pots when ihey 

 require it, and not give them too much wet in 

 the winter. In summer they should h.we a 

 large share of air in warm weather, and be often 

 refreshed with water. 



These plants are very ornamental among other 

 stove exotics. 



HELIOTROPIUM, a genus comprising 

 plants of shrubby, herbaceous, annual, and bi- 

 ennial kinds. 



It belongs to the class and order Pentandria 

 Mononynla, and ranks in the natural order of 

 AspenJ'ol'Kf. 



The characters are : that the calyx is a one- 

 leafed perianthium, tubular, five-toothed, per- 

 manent: the corolla monopetalous, salver-shap- 

 td : tube the length of the calv.x : border flat, 

 half- five-cleft, obtuse: clefts smaller, alternate, 

 more acute, between the larger ones : throat 

 naked: the stamina have five filaments, very 

 short in the throat : anthers small, covered : the 

 pistillum has four germs : style filiform, length 

 of the stamens : stigma eniarginate : there is no 

 pericarpium : calyx erect, unchanged, cherish- 

 ing the seeds in its bosom (berry): the seeds 

 four, ovate, acuminate (nuts four, naked or 

 corticate, not perforate.) 



Th<? species cultivated are : 1 . //. Peruvianum, 

 Peruvian Turnsole, or Heliotrope ; 2. //. hidi- 

 cum, Indian Turnsole, or Heliotrope; 3. //. 



fmnlflorum, .Small-flowered Turnsole, or Hc- 

 iotrope ; 4. H. Curasiavicum, Glaucous Turn- 

 sole, or Heliotrope J 5. H.Canarlense, Canary 

 Heliotrope. 



The first rises witli a shrubby stalk from two 

 to three feet high, dividing into many small 

 branches: the leaves arc three inclie-* long, and 

 an inch and half broad in the middle, hairy, 

 greatly veined, and ash- coloured on their under 

 side, on short foot-stalks: the llowcrs are pro- 

 duced at the ends of *Jie branches in short reflex 

 spikes, growing in clusters: the peduncles di- 

 vide into two or three, and these again into 

 smaller ones, each sustaining a spikelet ol pale 

 blue flowers, which have a strong sweet odour. 

 It grows naturally in Peru, flowering here great 

 part of the ve.ir. 



The second species has an herbaceous stem, 

 a foot and a half or two feet high, round, sca- 

 brous, hirsute, subdivided : the leaves cordatc- 

 spatuK^te, ov.ite, slightly serrate, wrinkled, nerv- 

 ed, hairy, softish : on pretty long petioles, two 

 inches and a half long, and one and a half broad 

 in the middle : the spikes terminating, single or 

 solitary ; sometimes, but very seldom, double ; 

 sometimes also from the sides of the branches, 

 rellexonlvatthccnd : the flowers sessile, pointing 

 one way,' approximating in a double row, small, 

 blue. It is a native of the West Indies, and 

 annual or biennial, flowering in July and Au- 

 gust. 



There is a variety which is a smaller plant, 

 seldom nrore than two feet high ; the leaves an 

 inch and half long, and about half an inch 

 broad : the spikes "of flowers very slender, and 

 not more than two inches long: the flowers 

 small, and of a light blue colour. 



The third hasai^ erect stem, pubescent, a foot 

 high : most cJf the leaves opposite, except those 

 in the middle of the stem, which are alter-nate, 

 pctioled, lucid, and acute : the peduncles oppo- 

 site to the leaves, or from the divisions of the 

 stem, longer than the leaves, erect, each having 

 two recurved, imbricate spikes of whitu flowers. 

 It is annual, and a native of the West Indies, 

 flowering in July and August. 



The fourth sjjecies has an annual root : the 

 stem round, very smooth, withaglaucous gloom 

 on it : the branches trail on the ground, and 

 grow a foot (or sixteen inches) in length ; the 

 leaves are sonrewhat blunt, quite entire, upriijht, 

 on very short petioles, some alternait;, others op- 

 posite, whitish, and smooth: the spikes in pairs 

 on a common peduncle, and recurved : the co- 

 rolla white, with a yellow base, and an open 

 throat. It is a native of the West Indies, 

 flowering in June and July in this climate. 



The fifth rises with a woody stalk three or 

 four feet high, dividing into many branches, 

 with leaves irpon long foot-stalk<; hairy, and of 

 an ash colour on their under side : the flowers 

 are produced from the side of the branches on 

 pretty long pcdrmcles, each sustaining Jour short 

 roundish spikes or beads, which divide by p.iirs. 



