47 
floribus racemosis, calyx angulatus, dentibus 
acuminatis Raf.—Liseron ligneux Rob. p. 402. 
Shrubby vine ; bark yellow brown ; leaves deep 
green above ; corolla yellow, swelled above the 
calyx. The whole pant affords a glutinous milk; 
it blossoms in April. It is a real Echites , and not 
a Convolvulus . 
145. Ipomea avicularis Raf. Volubilis, cordatis, tri- 
lobis, longe petiolatis, lobis acutis ; floribus sol- 
itaris ? sepalis calicinalis, capsulis monolocularis 
trispermis Raf.—Ip. hederifolia Rob. p. 402. 
Stems slender, round, forming a shady vine ; 
flowers white, rather small, stamina inserted at 
the base of the corolla, stigma elliptic entire* 
capsul round, seeds black angular interiorly, 
white and mealy inside ; they float in winter on 
the rivers, and are greedily eaten by water fowls, 
who fatten on this food. This useful vine grows 
on the banks of rivers, and blossoms in September 
and October. It does not appear to be the 
I. hederifolia of South America, as Robin thinks: 
it may form a section in the genus Ipomea by 
its capsul one celled, which may be called 
Ornithosperma . 
• ■> 
Order xi.—Polemonre. 
146. Phlox Carolina L. Rob. p. 404. 
147. - uniflora Raf. Foliis ovatis acutis scabm, 
floribus solitaris. Raf.—Phlox 2, Rob. p. 404. 
Stems only one foot high, flowers light red. 
