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NEW AND RARE PLANTS. 
H YDROLEACEiE. 
Wigandia Caracasana. Caraccas Wigandia. This tender stove shrub is 
a native of the Caraccas, where it was first found by Humboldt and Bonpland. 
It was introduced into this country by His Grace the Duke of Northumberland, 
from the Royal Garden at Berlin. The plant has a very beautiful appearance 
when well grown ; the flowers are delicate lilac, and open in succession for a long 
time. Bot. Reg. 1966. 
THE GREEK VALERIAN TRIBE (POLEMON IACE^). 
Leptosiphon densiflorus. Thickly-flowered Leptosiphon. A very hand- 
some, perfectly hardy annual, introduced by Mr. Douglas, from California. It is 
in many respects similar to L. androsaceus, but the leaves have more numerous 
and narrower segments, and the flowers are much larger. Flowers lilac, more or 
less inclining to a deep rose colour, or purple. Bot. Mag. 3578. 
THE POPPY TRIBE (PAPAVERACEiE). 
Platystemon Californicum. Californian Platystemon. A highly inter- 
esting annual, for the introduction of which our gardens are indebted to Mr. 
Douglas, who sent the seeds to the Horticultural Society from California. It 
flowers in June and July, and proves perfectly hardy, ripening its seed very 
copiously. Flowers pale sulphur yellow. Bot. Mag. 3579. 
THE COFFEE TRIBE (c INCHONACEyE). 
Pavetta Caffra, South African Pavetta. This very pretty species is a 
native of South Africa, and was received at the Edinburgh Botanic Garden from 
Kew in 1835 ; and flowered freely in the stove in the end of April and beginning 
of May. It is an erect shrub with white flowers, ascending branches and obovate 
leaves. Bot. Mag. 3580. 
the umbelliferous tribe (umbelliferze). 
Xanthosia rotundifolia. Round-leaved Xanthosia. This is a curious 
umbelliferous plant, very much unlike in habit to the majority of individuals of 
this extensive natural order. It was received at the Glasgow Botanic Garden 
from Messrs. Loddiges, and flowered in June. The stem is shrubby, about a foot 
high, slightly branched, the leaves are alternate, partially clothed with deciduous 
down. Flowers white, with the anthers and upper part of the germ red. It is a 
native of New Holland. Bot. Mag. 3852= 
THE CRUCIFEROUS TRIBE (CRUCIFERiE). 
Schizopetalon Walkeri. Mr. Walker's Schizopetalon. This is a very 
interesting plant, a native of Chili, whence it was introduced in 1821 by the late 
Mr. Walker. It is a fibrous-rooted plant, with a decumbent stem about a foot 
high, sparingly clothed with short forked hairs. Flowers white and fragrant ; 
leaves linear, toothed, an inch or two in length, attenuated at the base. <; It is a 
hardy annual, thriving best in light sandy soil, and is increased by seeds, which it 
perfects but sparingly, and that only in dry and warm summers. To hasten their 
