HIBISCUS _præmorsus_ hirsutus, foliis ovatis basi angustato-cordatis apice præmorsis crenatis, calycibus tomentosis, seminibus tuberculatis. _Linn. Suppl. Pl. p. 309._ PAVONIA _cuneifolia_. _Cavan. Diff. 3. p. 139. t. 45. f. 1._ URENA _præmorsa_. _L'Herit. Stirp. nov. t. 51._ Though not so shewy a plant as many of the genus, we find this species of _Hibiscus_ in most collections of green-house plants about London, flowering from June to September. Its foliage is singular, its blossoms sulphur coloured with a tint of orange on the under side and without scent; if suffered to grow, this shrub will acquire a considerable height; it seeds freely, by which the plant is readily increased, and by these it requires to be renewed once in two or three years. Is a native of the Cape, from whence it was introduced, by Mr. Masson, in 1774. _Ait. Kew._ It will be seen by the synonyms, that authors have been divided in their opinions as to the genus of this plant; Linnæus the younger, in his _Suppl._ makes it an _Hibiscus_; Cavanille, a _Pavonia_; L'Heritier, an _Urena_; Mr. Aiton, an _Hibiscus_; not partial to the multiplying of genera, unless there be an obvious necessity for it, we have in the present instance followed the first and last of these writers. [437] [Illustration: Nº. 437] Hydrangea Arborescens. Shrubby Hydrangea. _Class and Order._ Decandria Digynia. _Generic Character._ _Caps._ 2-locularis, 2-rostris, infera, foramine inter stylos dehiscens. _Specific Character and Synonyms._ HYDRANGEA _arborescens_ caule arboreo. _Linn. Syst. Nat. ed. 13._ _Gmel. Syst. Veget. ed. 14._ _Murr. p. 410._ _Ait. Kew. v. 2. p. 76._ ANONYMOS floribus albis parvis, in umbella lata magna dispositis odoratis, foliis amplis acuminatis serratis pediculis insidentibus ex adverso binis, caule fruticoso præalto non ramoso, vasculo parvo, bicapsulari, seminibus minutissimis repleto, duobus parvis filamentis seu corniculis recurvis coronato. _Clayt. n. 79._ _Mill. Icon. t. 251._ _Duham. Arb. 1. t. 3._ As a shrub commonly cultivated for ornament in our gardens and plantations, the _Hydrangea arborescens_ has a right to appear in this work, nevertheless it is more with a view to illustrate a peculiar character of the genus that it is here figured. This shrub is a native of Virginia, and was introduced in 1736, by P. Collinson, Esq. it is of low growth, rarely exceeding four feet in height; its flowers are produced on the summits of the branches, somewhat in the manner of the _Laurustinus_; they are small, crowded, nearly white, with a tinge of red in them which is not very brilliant, and some fragrance; they are produced in July and August, and sometimes followed by ripe seeds here.