134 ARBORETUM ET FRUTICETUM BRITANNICUM. 
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 Pavia.— Pavia califirnica (ZE. californica Nutt.) has been 
described by Torrey and Gray, but is not yet introduced. P. Lyonii 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. rabra 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 ’sculus and 
Pavia 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 2Z’sculus and Pavia, are best perpetuated by budding or grafting, and 
that collectors ought always to see that the plants they purchase have been 
worked. Pavia 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. Pavia 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. 
Orver XV. SAPINDA‘CE. 
Oxp. CHAR. Flowers polygamous. — Males with the calyx more or less deeply 
4—5-parted. Petals 4—5, or occasionally absent, alternate with the 
sepals. Dist 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, K6lreutéria 
paniculata Laxm. 
Genus I. 
KOLREUTE’RIA Laxm. Tue Korreureria. Lin. Syst. Octandria 
Monogynia. 
Identification. Laxm. Acad. Petr.;16. p. 561.3; L’Hérit. Sert., 18. t.19.; Wi S ; 
Dee. Prod., 1. p. 616. ; Don’s Mill., 1: 672. i Hah We Dee Blase 
Suey en Sapindus sp dias Ji Célreuteria, Ital. 
erivation. In honour of John Theophilus Kolreuter, once profes f i = 
yuhe, and celebrated for his yeicarches on the pollen of plants, OF OE BAUS: EADS Be Ca 
