134 ARBORETUM ET FRUTICETUM BR1TANNICUM. 



in the case of large plants on moist soil, for three months or longer, forming 

 one of the greatest floral ornaments of the shrubbery, at a season when very 

 few trees or shrubs are in flower. The fruit, which is small, seldom ripens 

 in England : but in America it is said to be eaten, boiled or roasted ; and 

 M. Poiteau, accordingly, has included this species of Pavia in his list of fruit 

 trees. Layers ; or seeds, when they can be procured, and which ought to be 

 sown as soon as possible after they are ripe. 



Other Kinds of Pdvia. Pdvia califurnica (JE. californica Nutt.) has been 

 described by Torrey and Gray, but is not yet introduced. P. Lyorm is in the 

 Hort. Soc. Garden, but has not yet flowered there. We have omitted in this 

 edition P. hybrida, described by DeCandolle as a truly intermediate plant be- 

 tween P. riibra and P. flava, with yellow, white, and purple flowers ; because 

 the only plant which we have seen bearing this name, that in the Hort. Soc. 

 Garden, has the flowers yellow, and appears merely a very slight variety of 

 P. flava. In nurserymen's catalogues there are several names which we 

 have not noticed ; for the truth is, that the different kinds of ^2? / sculus and 

 Pav/a cross-fecundate so freely, and seedlings vary so much, that there is 

 no limit to the number of varieties that might be produced. The great error 

 (because it creates so much confusion in the nomenclature) consists in giving 

 these varieties to the world as species. 



It is almost unnecessary to observe, that all the most valuable varieties, 

 of both JS'sculus and PavzVz, are best perpetuated by budding or grafting, and 

 that collectors ought always to see that the plants they purchase have been 

 worked. Pavwz rubra as a tree, P. discolor either as a shrub or grafted standard 

 high, and P. macrostachya as a shrub, ought to be in every collection, whether 

 small or large. Pavz'a humilis, when grafted standard high on the common 

 horsechestnut, forms an ornament at once singular and beautiful. As the 

 horsechestnut is to be found in most plantations, those who are curious in the 

 species and varieties might graft them on the upper branches of old trees ; or 

 young trees might be headed down, and one kind grafted on each. 



ORDER XV. SAPINDA X CE^. 



ORD. CHAR. Flowers polygamous. Males with the calyx more or less deeply 

 4 5-parted. Petals 4 5, or occasionally absent, alternate with the 

 sepals. Disk fleshy. Stamens 8 10, inserted into the disk. Hermaphro- 

 dite flowers with the calyx, petals, disk, and stamens as in the males. 

 Ovary 3-celled. Cotyledons incumbent. Plumule 2-leaved. (Lindl.) A 

 tree, a native of China. 



Leaves compound, alternate, stipulate, deciduous. Flowers terminal, 

 in racemose panicles, small, white or yellow. There is only one hardy 

 species belonging to this order in British gardens, namely, " Kolreuteria 

 paniculata Laxm, 



GENUS I. 



KOLREUTE'R/^ Laxm. THE KOLREUTERIA. Lin. Syst. Octandria 



Monogynia. 



Identification. Laxm. Acad. Petr.,16. p. 561.; L'He"rit. Sert., 18. t. 19.: Willd. Spec. PI., 330. ; 



Dec. Prod., 1. p. 616. ; Don's Mill.. 1. p. 672. 

 Synonymies. Sapindus sp. Lin.fil. ; Colreuteria, Ital. 

 Derivation. In honour of John Theophilus KSlreuter, once professor of natural history at Carls- 



ruhe, and celebrated for his researches on the pollen of plants. 



