212 
PARK AND CEMETERY 
GARDEN PLANTS— THEIR GEOGRAPHY-LXXIIL 
Artocarpus is the “bread fruit” genus in 45 species 
of 2 sections. They are all tropical trees or shrubs, 
mostly from Asia and the Malayan and Pacific Isl- 
ands, also introduced to the West Indies. 
Urtica is the nettle genus of 30 species widely dif- 
fused in temperate and sub-tropical regions. Some 
ARTOCARPUS INCISA. 
of the latter have beautifully cut foliage but are so 
desperately virulent that it is unsafe to admit them 
in a garden. To touch them is like touching molten 
lead. 
Pilea has 175 species in tropical and warm parts of 
America, Asia, and Africa. P. muscosa is the so- 
called “pistol plant.” P. pumila is the native “rich- 
weed ” 
Pellionia is in 18 species, natives of tropical and 
Eastern Asia and the Pacific Islands. Some are 
creeping herbs with variously marked foliage. 
Platamis “plane trees” are in six species found in 
Cachmere, the Mediterranean countries, and Mexico 
as southern stations, and widely dispersed over the 
temperate regions of the Northern Hemisphere. P. 
occidentalis is the largest N. American deciduous 
tree, sometimes growing, it is said, to 216 feet high. 
Actual measurements of 75 trees have given an aver- 
age of 85 feet high, and a trunk diameter at 3 feet 
above ground of 4 feet 9 inches. The tree is a grand 
one for wide country avenues, grows rapidly on 
moist ground, very well on drier soils, and stands 
smoky cities capitally. The dry wood makes a very 
hot fire, and as more of it can be produced in a given 
time than by most other trees, it ought to be valuable 
to plant on otherwise useless bottom lands, from On- 
tario and Minnesota southward to the Pecos. In Mex- 
ico, Texas, and New Mexico P. Wrightii is found. 
From Mexico to central California there is P. racem- 
osa. Planes are easily raised from seed and cuttings, 
and young plants are supplied cheaply by nurserymen. 
There are also three species of oriental planes in cul- 
tivation, P. orientalis, P. aeerifolia the “London 
plane,” and P. cuneata. These have several varieties. 
James MacPherson. 
HIBISCUS MANIHOT L. 
Dr. Robinson of the Gray Herbarium has kindly 
provided me with the above name for a very fine plant 
which flowered during the summer at the nurseries of 
Mr. George Wainwright of Trenton. 
It is said to be a native of tropical Asia and natur- 
alized in some parts of the southern states. It is fig- 
ured in the Botanical Magazine t. 1702 and 3152. Ref- 
erence is also made to it in Michaux Flora 2, 45. Mil- 
lers’ Dictionary Ed. 5, Hibiscus 12. Don’s Miller 
1,457. Pursh 457. Torr & Gray 1,236 and Eaton and 
Wright 269. Woods’ Class Book also has it under 
Abelmoschus Manihot, 270. 
It seems to have been introduced to Europe about 
1712, but when it reached the United States I don’t 
know. 
Seedsmen are distributing seed under their own 
names, which are often misleading. 
It is a very fine subject for sub-tropical gardens 
or the back of mixed borders. It grows ^bout as 
high as the Hollyhock (4-8 feet), has palmate leaves 
and hispid stems, lemon-yellow flowers 5^2 to 6 inches 
in diameter, produced in great abundance on lateral 
branches from the upper third of the stems. 
PILEA MUSCOSA. 
The seed was sown about the end of April under 
glass, the seedlings potted, and planted out towards 
the end of June. With this treatment the season was 
