T H A 



T H A 



The tenth species is a shrubby plant, growing 

 seven or eight feet high, and may be trained to 

 a nnich greater lieight : the flowers arc some- 

 what shorter and smaller, though the leaves are 

 larger ; they are not blue but purplish, with 

 more conspicuous veins and streaks ; the an- 

 thers are of a dusky greenish colour ; the leaves 

 are broader, of a rliomboid form, more hairy, 

 and whiter on their under side. It is a native of 

 Spain, flowering from June to September. 



The eleventh has the leaves acuminate, white 

 beneath : the flowers in threes, or solitarv : the 

 calvxes are spiny. It is a native of Candia and 

 Egypt. 



The twelfth species has a low shrubby stalk, 

 sending out many slender woody branches, in 

 warm countries rising three or four feet high, 

 but in England rarely half that height : the stalks 

 are very hoary, and have small leaves placed 

 opposite at each joint, about the size of those of 

 Thyme, and pointed at both ends, green above, 

 hoary underneath, having a grateful scent, but 

 so piercing as to cause sneezing : the flowers 

 erow in loose whorled spikes at the ends of the 

 branches; they are very downy, and of a bright 

 red colour ; appear in July and August, but 

 produce no seeds in this climate. It is a native 

 of Spain. 



Culture. — All the herbaceous and ligneous 

 kinds may be readily increased by parting the 

 roots, by slips of the young branches, and seeds: 

 the roots may be divided in the autumn, or 

 early spring, and the slips of the branches be 

 taken off in the spring and summer, beino^ 

 planted out in moist shady situations ; and when 

 well rooted, they may be removed to where 

 they are to remain, though it is best to plant 

 them at once where thev are to grow : the seeds 

 may be sown in a bed or border of common 

 earth in the early spring season. 



In the Polium kinds the seeds should be sown 

 in a bed of light earth, and the plants be either 

 put out in nursery-rows, or set where they are 

 to remain, in the latter end of summer. 



The shrubby sorts may likewise be increased 

 by slips or cuttings of the young shoots of the 

 branches, which should be planted in pots filled 

 with light mould, in the spring and summer 

 months, in order to be removed under the pro- 

 tection of the green-house in winter, being after- 

 wards managed as other green-house exotics. 



The first sorts afford variety in the borders, 

 Sec, and the latter in assemblage with green- 

 house plants. 



THALICTRUM, a genus containing plants 

 of the hardy, herbaceous, fibrous-rooted, peren- 

 nial kinds. 



It belongs to the class and order Pohjandria 



Polygyma, and rank* in the natural order of 

 Mult'isU'tqjKP. 



The characters are: that there is no calvx, 

 unless the corolla be taken for it : the corolla 

 has four petals, roundish, obtuse, concave, 

 caducous : the stamina have very many filaments, 

 wider at top, compressed, longer than the co- 

 rolla : anthers oblong, erecr : the pistillum, 

 styles very many, very short : germs many, 

 conunonly pedicelled, roundish :"styles none : 

 stigmas thickish : there is no pericarpium : the 

 seeds many, grooved, ovate, tailless. 



The species cultivated are : i. T. tuherosvm. 

 Tuberous-rooted Meadow Rue : 2. T. Corni/li, 

 Canadian Meadow Rue: 3. T.faH'tdum, Fetid 

 Meadmv Rue : 4. T. angvsiifolium. Narrow- 

 leaved Meadow Rue : 3. T. lucidiim, Shining- 

 leaved Meadow Rue: 6. T. aquilegifoliitm. 

 Columbine-leaved Meadow Rue, or Feathered 

 Columbine. 



The first has knobbed roots : the leaves small, 

 obtuse, indented in three parts at their points, 

 of a grayish colour and smooth : the stalks rise 

 a foot and half high, and are naked almost to 

 the lop, where they divide into two or three 

 small ones, under each of which is placed one 

 leaf; every division is terminated by a small 

 bunch of pretty large flowers, disposed almost 

 in form of an umbel, each composed of five white 

 petals. It is a native of Spain, flowering in June. 



The second species attains the height of three 

 feet : the stems suffruticose, dark purple, 

 branched : leaves resembling those of Colum- 

 bine, but glaucous : the flowers in many pale- 

 purple heads, five-petalled and white. It is a 

 native of North America, flowering from May 

 to .July. 



There is a variety, which is smaller, with pale 

 purple filaments. 



The third has the stem about six or seven 

 inches high : the leaves downy, composed of a 

 great number of small leaflets, which are bluntly 

 indented, and have a fetid scent : the flowers in 

 loose panicles, small, and of an herbaceous 

 white colour : the leaves are somewhat hairy on 

 both sides, pulpy and soft : the petals themselves 

 are somewhat hairy, in the young plant reddish, 

 but m the adult whitish, almost a foot high, 

 and not very leafy. It is a native of the South 

 of France, Switzerland, &c., flowering from 

 May to July. 



The fourth species has the stems from two to 

 three feet high : the flowers small, collected in 

 terminating panicles, and of an herbaceous white 

 colour. It is a native of Germany and Switzer- 

 land, flowering in June and July. 



The fifth has the stems upright, channelled, 

 five or six i'eet high, having at each joint pinnate 



