PARK AND CEMETERY. 
237 
GARDEN PLANTS— THEIR GEOGRAPHY, XLIX. 
POLEMONIALES. 
THE POLEMONIUM, CONVOLVULUS AND SOLANUM 
ALLIANCE. 
( Continued) . 
Phacclia including several plants such as 
Whitlavia, Eutoca, etc., has 53 species all North 
or South American. P. Whitlav a, P. tanaceti- 
folia, and a few others with purplish, pinkish or 
white flowers are cultivated. 
WIGANDI.\ MACROPUVLI.A. 
Conanthus arietioides is a little annual from the 
dry regions of Arizona northward to E. Oregon. 
It has showy purple flowers for the size of the plant. 
Emmenanthe again is a genus of low annuals 
from an inch to a foot or two high. One or two in 
cultivation have yellow flowers. The 6 species are 
from the Pacific slope. 
Wigandia has 3 or 4 species from the tropical 
mountain regions of Central and South America. 
They have fine majestic foliage, grow to 10 or 12 
feet high, and are employed as sub-tropical bed- 
ding plants or as single specimens. Some are viru- 
lent stinging plants. Their purple cymose flowers 
are borne during winter, but are not worth the hot- 
house space needed to produce them. 
Cordia is a large sub-tropical and tropical genus 
with woody representatives on the Mexican border 
and S. Florida islands. Eriodictyon tomentosum 
is a South Californian low shrub. Bourreria Ha- 
vanensis is a glabrous shrub. Ehretia elliptica is 
a tree of the Mexican border. PI accuminata and 
E, serrata are Himalayan and in cultivation in 
California and I'lorida gardens. 
Heliotropium has 120 or more species of shrubs, 
perennials, and annuals. Of the latter H. suaveo- 
lens from the Caucasus, PI. convolvulaceum from 
Nebraska and H. Greggii from Texas and Mexico 
are fragrant, and worth the attention of those who 
cannot indulge the Peruvian varieties. Some of 
the plants known as Tou .mefortia are quite pretty 
though scentless. 
In the Borageae there are a number of genera 
such as Trichodesma, Omphalodes, Cynoglossum, 
Lindelofia, Paracaryum, Myosotidium, Eritrichium, 
Symphitum, Anchusa, Lycopsis, Pulmonaria, 
Mertensia, Myosotis, Macromeria, Lithospermum, 
Macrotomia, Plchium and Onosma from which se- 
lections may be made in blue, white and yellow 
flowers of great showi ness, though sometimes borne 
on coarse plants. 
Iponiaca has 350 or more species inhabitating the 
warm and tropical parts of the world. No true 
Ipomaes are wild in Plurope, however. They are 
often and often among the most beautiful climbers, 
trailers or shrubs met with in tropical countries. 
There are about 26 species natives of the United 
States, and these, too, are often very handsome. 
I. leptophylla, found on the western plains from 
Nebraska to Texas, is a somewhat shrubby habited 
perennial worth attention, and the Brazilian I. 
fistulosa, also of upright habit, has naturalized in 
parts of Texas. 
Calystcgia , in quite a number of species and 
varieties, is now regarded as a section of convolvu- 
