380 HORTUS MORTOLENSIS 
CHAMZROPS HUMILIS. 
The “ dwarf palm,” though once indigenous on the Riviera,* 
has now disappeared as a wild plant, but is much grown in 
gardens. It is a very variable species, almost each individual 
plant differing from the others: The var. arborescens is the one 
with a tall stem; there are, however, forms with smaller and 
larger leaves. Var. elegans has slender petioles with small spines. 
Var. tomentosa has the leaves covered underneath with a some- 
what scaly white tomentum. Var. macrocarpa is distinguished 
by larger fruits. 
These plants were introduced at La Mortola from Hyéres in 
December, 1867, and again from the Jardin d’Essai, Hamma, 
Algeria, in February, 1873. 
CHEIRANTHUS MUTABILIS. 
A very free flowering half-shrubby species, was introduced by 
Mr. Daniel Hanbury, in January, 1869. 
CHRYSANTHEMUM. 
All along the Riviera the shrubby Canadian species are now 
extensively grown for export, particularly C. frutescens, C. Brous- 
soneti, and C. grandiflorum. 
The Japanese C. nipponicum also does very well. It was 
received from Cay. C. Sprenger, in October, 1901. 
CINNAMOMUM CAMPHORA. 
Is not growing well at La Mortola, where it evidently dislikes 
the calcareous soil. Beautiful trees are occasionally met with on 
different soil along the Riviera. 
Cirsium (CHAMHPEUCE) GNAPHALODES. 
Now almost subspontaneous in the garden, was introduced by 
Mr. Daniel Hanbury from the Botanic Garden of Naples in May, 
1872. 
CistTUus. 
‘No species of Cistus was observed growing wild in the 
grounds of the Palazzo’? (Daniel Hanbury, MS. notes of the 
garden, July, 1867). Seeds of C. albidus and U. salvifolius were 
collected by Mr. Daniel Hanbury near Mortola Superiore in the 
same month and sown in the valley, where they are now common 
and quite established. The Cistus were favourite plants of the © 
late Sir Thomas Hanbury. A great number were procured on 
several occasions, for instance, from Hyéres as early as December, 
_* For Chamerops humilis as a native of the Riviera, see Dr. F. Mader 
in Annales de la Soc. d. Lettres, Sciences et Arts des Alpes Maritimes, xix. 1905, 
p. 263, and my note in Gardeners’ Chronicle, 1907, i. p. 213. 
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