1074 ARBORETUM AND FRUTICETUM. PART II. 
and plants have stood against the wall in the Horticultural Society’s Garden for 6 years, and been 
found perfectly hardy. 
Culcitium salicinum Spr., Cacalia salicina Lab., (Bot. Rep., t. 923.; and our fig. 862.) is a New 
Holland” shrub, with succulent leaves ; evergreen ; growing to the height of 6 ft. ; and producing its 
yellow flowers in June and July. 

Caca‘lia L. is a genus of which there are several suffruticose species, with succulent leaves, varying 
in height from 1 ft. to 6 ft., all of which might be tried on conservative rockwork. 
Franxéria artemisidides W., and I’. ambrosidides Cav. Icon., 2. t. 200., are natives of Peru and Mexico, 
growing to the height of from 4 ft. to Gft., and producing their greenish: flowers from July to Sep- 
tember. 
G'dera prolifera Thunb. (Bot. Mag., t. 1637.) is an evergreen undershrub, a native of the Cape, 
growing to the height of 3ft., and producing its yellow fiowers in May and June, 
Pyréthrum Sm. is a genus of which several species, natives of the 
Canadas and Teneriffe, are suffruticose, grow to the height of 3 ft., and 
produce their white flowers all the year. P. faeniculaceum W. En. (Bot. 
Reg., t. 272. ; and our fig. 863.) will give an idea of the species. In a late 
number of Sweet’s Brit. Fl. Gard., under the head of Ismélia maderénse, 
it is remarked, that all the shrubby Teneriffe and Canary plants, hitherto 
considered as included in the genus Pyréthrum, will, probably, be found 
to belong to that of Zsmélia. 
Athanasia L, is a genus of evergreen undershrubs, natives of the Cape, 
of which A. pubéscens L. (Com. Hort., 2.47.3; Encyc. of Plants, p. 696. 
f. 11662.) is deserving of a place against a conservative wall. This plant 
grows to the height of 6 ft., and produces its yellow flowers from June to 
August, 
Balsamita ageratifilia Desf. (Alp. Ex., t. 326.) is a native of Candia, 
growing to the height of 2ft., and producing its yellow flowers from 
June to October. It deserves a place against a conservative wall or 
rock. 

Piéntza flabelliformis W., Tanacétum flabelliférme L’ Hé7it., (Bot. Mag. 
t. 212.) is an evergreen undershrub, a native of the Cape, which grows to the height of 4ft., and 
produces its yellow flowers from May to August. It is interesting for its silvery fan-shaped leaves. 
Eriocéphalus africinus L. (Bot. Mag., t. 893.) isan evergreen Cape shrub, which grows to the 
height of 8 ft., and though not remarkable in its flowers, which are yellow, has yet very interesting. 
leaves, which have a whitish hue, and are divided into narrow filaments,\so as to somewhat resemble 
those of the southernwood ; they are also odorous when slightly rubbed, 
Senécio L. is a genus of which there are several Cape and South American species that are 
suffruticose and evergreen ; and which, if planted in dry soil, against a wall, or on rockwork in a 
very warm situation, might probably admit of being protected during winter. In the warmest parts 
of Cornwall and Devonshire, some of the species are treated as border flowers, and found to be 
hardier than pelargoniums. 5S. élegans pléna ribra Bot. Mag., t.238., has been so treated, S, lilacinus 
Link grows to the height of 6ft., and flowers in June and July. It would form a most ornamental 
plant if trained to a wall. 
Tarchonanthus camphoritus Lam. Ill., 671., is not rare in old botanical collections. It has whitish, 
somewhat ovate, leaves, with an odour more or less camphor-like. Planted out under a wall for the 
‘summer, it grows freely. 
Eriécoma fragrans D. Don is a native of Mexico, beautiful in its panicles of white-rayed heads 
of fragrant flowers ; and it has large leaves, 
Various other genera of Compésite afford half-hardy suffruticose species ; but some of these are of 
such humble growth, that they are better adapted for being considered as half-hardy herbaceous plants 
than shrubs. Those, however, who wish to pursue the subject as far as it will go, may turn to the 
following genera inour Hortus Britannicus and Gardener's Magazine : — Centauréa, Kentrophgllum 
(K. arboréscens is 6 ft. high), Stobe‘a (S. pinnata is 4 ft.high), Bacdxia, Cichdrium, Roldndra, Nécca, 
Piquéria, Eupatorium, Mikania, Améllus, Grindélia, Diplopdppus, Néja, Erigeron, Pterdnia, 
Bhupthdlmum, Diomedia, Zexménia, Montanoa, Lidbéckia, Achilica, Tanacétum, Hippia, Casstnia 
(€. leptoph¥la is very shrubby), Ixvddta, Oxothdmnus, Leucostémma, Apheléxis, Syncarpha, Me- 
talasia, Stee‘be, Phceen6coma, Legsera, Rethania, Osmites, Trizis. 
