This variety has been very lately introduced from Holland, by Messrs. GRIMWOOD and Co. Kensington; it flowers from June to September, and is propagated by parting its roots in spring or autumn. [146] HYPERICUM CALYCINUM. LARGE-FLOWER'D ST. JOHN'S-WORT. _Class and Order._ POLYADELPHIA POLYANDRIA. _Generic Character._ _Calyx_ 5-partitus. _Petala_ 5. _Filamenta_ multa, in 5 phalanges basi connata. _Capsula._ _Specific Character and Synonyms._ HYPERICUM _calycinum_ floribus pentagynis solitariis terminalibus, caule tetragono fruticoso, foliis oblongo-ovatis coriaceis. _Linn. Syst. Vegetab. p. 700. Mant. 106._ _Hort. Kew. v. 3. 103._ ASCYRUM magno flore. _Bauh. Pin. 280. Prodr. 130._ ANDROSAEMUM Constantinopolitanum flore maximo. _Wheler's Journey into Greece, p. 205. cum fig._ [Illustration: No 146] This species of St. John's-Wort, particularly distinguished by the largeness of its flowers, has very generally been considered as the _Ascyron_ of LINNAEUS, owing to his giving to that plant the synonyms which properly belong to the present one: in his _Mantissa_, this species is called _calycinum_, which name is adopted in the 14th edition of the _Systema Vegetabilium_, and also in the _Hortus Kewensis_, where the proper synonyms are applied to it, and from which we learn, that it is a native of the country near Constantinople, and was introduced into this country by Sir GEORGE WHELER, Bart. in 1676. It is a hardy perennial, increasing much by its roots, which are of the creeping kind, and by parting of which in the autumn it is most readily propagated; like the periwinkle, it is a plant well adapted to cover a bank, or bare, spots under trees, where other plants will not thrive. It flowers from July to September. [147] DAIS COTINIFOLIA. COTINUS-LEAV'D DAIS. _Class and Order._ DECANDRIA MONOGYNIA. _Generic Character._ Involucrum 4-phyllum. _Cor._ 4 s. 5-fida. Bacca 1-sperma. _Specific Character and Synonyms._ DAIS _cotinifolia_ floribus quinquefidis decandris. _Linn. Syst. Vegetab. ed. 14. Murr. p. 403._ _Spec. Pl. p. 556._ DAIS _laurifolia_. _Jacq. ic. collect. 1. p. 46._ [Illustration: No 147] The _Dais cotinifolia_ is an ornamental Green-house Shrub, of the deciduous kind, and though it appears from the _Hortus Kewensis_ to have been introduced by Mr. JAMES GORDON, of Mile-End, in 1776, is yet a great rarity with us, and only to be found in some of the first collections. Its scarcity, and consequent very high price, is attributed to the Nursery-men's not having yet discovered the means of propagating it freely. Messrs. GRIMWOOD and Co. of Kensington, have some very fine plants of it, which flower every year in the months of June and July, but as yet have produced no perfect seeds, which they may be expected to do when grown older; such having been known to ripen them in Holland.