mee - Leaves opposite, or verticillate in fours, furnished 1 
« 
TRIANDRIA. TRIGYNIA. 89 
die of agriculture and the arts. With the exception of a 
variety of the 7. caninum discovered in South America, 
this genus appears almost peculiar to Europe. 
122, LOLIUM. LZ. (Darnel.) ; ce 
Calix of one leaf, fixed to the rachis, many- 
flowered. Flosculi distichally imbricated. Seed 
coated by the corolla.—Spike simple. 
Specits. 1. ZL. perenne. 2. temuientum. Introduced, 
now naturalized. In this genus there are species which 
sometimes produce an inner valve, in which case the Lo- 
lium approaches very near to Triticum. 
Order $.—TRicyNtAa. 
123. HOLOSTEUM. Z. . 2 
Calix 5-leaved. Petals 5, eroded, or biparted. 
Capsule 1-celled, subcylindric, bursting at the 
Leaves opposite; flowers axillary and terminal, in di- 
chotomous corymbs, in H. wmbellatum, umbellate, some- 
times with 4 or 5 stamens, and 4styles. cites 
Species. 1. A. succulentum. Probably nothing more 
than Arenaria peploides, which grows on the sea coast 
of New-Jersey, as this Holosteum cannot now be found. 
. A genus of but 5 species, of which there are 2 in the 
‘West Indies, 1in Malabar, and another in Europe. 
124, POLYCARPON. ZL. | are: 
Calix 5-leaved. Petals 5, very short, emar- 
ginate and persistent. Capsule ovate, 1-celled, 
S-valved.. : 
 seariose stipules; flowers in a dichotomous. terminal 
Srecixi. ‘1. P. tetraphyllum. Around Charleston, 
aes Carolina) abundant-—Ex.irorr. Probably intro- 
L2 
