A C H 



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dug between the rows, so as to prevent their being 

 injured by the growth of coarse weeds, and the 

 side buds trimmed from the stocks. 



The. autumn is upon the whole the best time 

 for planting these and other deciduous trees, when 

 they are strong and well rooted ; yet when young 

 they are apt to be injured by frosts, and thrown 

 out of the ground in severe winters when planted 

 at that season of the year. 



The Common, Sugar, Norway, and Ash-leaved 

 Maples, from the tallness of their growth, their 

 having large spreading heads, and exuberant 

 foliage, are proper for large plantations; and 

 from the leaves being of different sizes, shapes, 

 and colours, they make a considerable variety, 

 when mixed with other trees of similar growth, 

 especially if the variegated sorts be employed : 

 besides, their large pendulous bianches of flowers, 

 though deficient in colour, are not without their 

 beauty, especially in those of the Norway kinds. 

 They are also useful informing detached clumps, 

 rural walks, groves, avenues, wherever shade is 

 wanted. 



ACETOSA, Sorrel. See Rumex. 



ACHANIA, a genus of plants which furnishes 

 three species of shrubby exotics for the stove, 

 but only one that is much cultivated. 



It belongs to the class and order Monadelphia 

 Pohjandria, and ranks in the natural order of 

 Columniferee. 



The characters are : that the calyx has a dou- 

 ble perianthiuin, the outer having many leaves, 

 and the leaflets being linear, permanent, and 

 slightly coalescing at the base : the corolla is 

 subclavate and convoluted ; and the petals are 

 five, obovate, oblong, erect, with a lobe at the 

 base on one side, involving the column of sta- 

 mina : the stamina arc numerous filaments, 

 coalescing into a writhed tube, longer than the 

 corolla, free at top, and capillary : the antherse 

 are oblong : the pistillum has a subglobular 

 germen : the style is filiform, of the same length 

 with the tube of the stamina, ten-cleft at top, 

 the segment spread, the stigmas capitate : the 

 pericarpium is a subglobular, fleshy, five-celled 

 berry : seeds are solitary on one side, convex and 

 angular on the other. 



The species principally cultivated is the A. 

 Malvaviscus, Scarlet Malaceous Achania, or 

 Bastard Hibiscus. 



It has a woody stejn, branching, ten or twelve 

 feet in height : the leaves are cordate, angular, 

 and acuminated, scarlet flowers coming out 

 from the w ings of their stalks : the petals are con- 

 torted, and succeeded by round berries of a scarlet 

 colour and clammy feel. The plant is a native of 

 South America and the West Indies. It flowers 

 the greatest part of the year. 



Culture. — Plants of this sort may be raised 



from seed, when it can be procured perfectly 

 ripe, by sowing it thinly in pots to the depth of 

 about half an inch, in good, clean, light, rich 

 mold ; and afterwards plunging them into a 

 gentle hot-bed. After the plants have come up 

 to the height of two or three inches, they should 

 be pricked out into other separate pots, be lightly 

 watered, and again plunged into the hot-bed 

 till tit to be removed into larger pots, where they 

 are to remain. 



As the seeds seldom ripen in this climate, it is 

 probably a more expeditious method to propagate 

 them by cuttings from the young shoots in the. 

 spring; which should be planted in pots of the 

 same sort of earth as for the seeds, and be plunged 

 into hot-beds of moderate heat, the air being 

 kept from them at first as much as possible. In 

 this way they soon take root, and should after- 

 waids be gradually inured to the action of the 

 open air in the green-house during the summer. 



The plants, from their tender nature, require 

 the constant assistance of the stove to preserve 

 them from the effects of cold in this climate 

 during the winter season; and when kept in 

 warmth during the summer they flowerbetter, and 

 sometimes ripen their fruit. They may, however, 

 be occasionally placed out in warm sheltered situa- 

 tions in the hot summer months, though with 

 this management they seldom flower well. 



And they must have the same attention and 

 management bestowed on them afterwards as is 

 necessary for other sorts of stove plants. 



ACHILLEAS, a genus comprehending plants 

 of the Milfoil, Yarrow, and Sneeze-wort kinds, 

 which are fibrous-rooted herbaceous perennials 

 of hardy growth. 



It belongs to the class and order Syngeriesia 

 Polygamia Superflua, and ranks in the natural 

 order of Compositte Discoidrce. 



The characters are : that the common calvx: 

 is ovate, and imbricated with ovate, acute, 

 converging scales : the compound corolla is ra- 

 diate : the hermaphrodite corollets are tubular 

 in ihe disk, and the females ligulate, being from 

 five to ten in the ray : the proper corolla of the 

 hermaphrodites is funnel-shaped, five-cleft, and 

 spreading ; the female obcordate, spreading, and 

 trifid, the middle cleft being less than the others: 

 the stamina in the hermaphrodites consist of five 

 capillary, very short filaments, and the anthera is 

 cylindrical and tubular: the pistillum in the her- 

 maphrodites has a small germ, a filiform style of 

 the length of the stamina, and an obtuse emar- 

 ginate stigma : in the females, a small germ, 

 filiform style of the same length as in the others, 

 and two obtuse reflex stigmas : there is no 

 pericarpium : the calyx is scarcely changed : the 

 receptacle is filiform, elongate as the disk of the 

 seeds, oyate, and twice the length of the calyx : 



