332 
PARK AND CEA\ETERY. 
Garden Plants, — Their Geography. XI. 
GERANIALES. 
THE GERANIUM, CITRUS AND CEDRELA ALLIANCE. 
( Continued. ) 
Dictamniis, “gas plant,” so called, is monotypic 
but in two or three shades of color. It is a capital 
garden plant, enduring, and raised from seeds sown 
as soon as ripe, but often lying a year before ger- 
minating. It is a native of Southern Europe and 
Western Asia. 
The tribes Diosmeae, Boronieae, &c., contain a 
number of beautiful South African and Australian 
plants which should be of use in California. 
Zanthoxylum with iio species is a largely trop- 
ical genus, but Z. Americanum, Z. clava-Hercules, 
and two others are natives. 
Phellodetidron has 3 species from Japan and 
Mandshuria. P. Amurense is hardy north to the 
lakes. 
Ptelea has 7 species all North American and 
Mexican. P. trifoliata is known as the “hop tree” 
and has a yellowish leaved form. 
Skimmia has 4 species from the Himalayas and 
Japan. S. Japonica is said to be used in the Bos- 
ton parks, but it is little used elsewhere. It is a 
little evergreen shrub, sometimes with variegated 
leaves. If the two sexes are grown some of them 
will bear scarlet berries. There are several varieties 
catalogued as species in cultivation, and some are 
kept in southern nurseries. S. laureola is Him- 
alayan. 
Miirraya with 4 species from tropical Asia and 
Australia is one of the most beautiful and fragrant 
shrubs in existence. It is in South Californian 
gardens but should never be exposed to frosts, of 
which it is more impatient than the orange. For 
some reason greenhouse gardeners persist 
in treating this beautiful thing to greenhouse treat- 
ment, when as a matter of fact it requires the tem- 
perature of a Palm house to flower and grow it well, 
and a rather dry rest at a temperature higher than 
the orange. M. exotica is the most free to flower, 
M. paniculata is in gardens too, and used to be sold 
for the smaller more valuable kind. 
Zdgle is a genus of fruiting shrubs in 2 or 3 
species. They are natives of Japan, China, India, 
the Indian Archipelago, and tropical Africa, and 
are widely cultivated and sometimes naturalized in 
other tropical regions. Hi. sepiaria, cuts of which 
can be examined in Nicholson, and also in 
Berckman’s catalogue, is widely advertised under 
such names as Triphasia trifoliata, T. monophylla, 
Limonia trifoliata. Citrus trifoliata, &c. It varies 
in foliage and habit and in the color and size of its 
fruit just as the orange does, and the various kinds 
have berries from the size and color of choke- 
CITRUS TRIFOLIATA. 
cherries to the 
size and color of 
a small lime 
They are famous 
hedge plants in 
warm countries, 
and fruit abun- 
dantly from 
south- 
The 
tender 
Georgia 
wards. 
forms with reddish fruit are proably more 
than the so called “hardy orange” with orange yel- 
low fruit, which has been known to endure several 
winters in Central Park, New York, but gets froz- 
en at last, and cannot be relied on north of the 
Carolinas. AL. marmelos is a well known East 
Indian fruit of larger size than the others. This 
revision is a recent one, and the work of the Kew 
Herbarium. It will now be in order for the Fad 
Botanists to try and upset it. 
Citrus has 25 species natives of the East In- 
dies and Australia, but very widely disseminated 
in cultivation, and frequently naturalized in coun- 
tries to which they have been carried. Orange 
seeds often grow up during summer in Northern 
gardens, but as the plants invariably freeze during 
winter, no one is betrayed into error from the cir- 
cumstance. At the south they endure for a series 
of years and bear fruit, only to succumb to a winter 
of exceptional severity. Naturally they grow 
where the temperature never falls below 40 
degrees Fah. C. Japonica the “Kumqua” is a 
CITRUS AURANTIUM. 
— Bahia Variety. 
fairly hardy garden “species.” Robert Fortune 
who presented a quantity of Chinese and Japanese 
seeds to an estate I once managed stated that in 
Japan it endures 20 degrees or 22 degrees Fah. 
This “species” should be hybridized. The so-called 
“hardy orange” is of still greater hardihood 
and credited to the same country. Nursery cata- 
