34 
having alterne leaves, a bipartite style, &c. It 
may perhaps be a Phacelia , or ought rather to 
form a new genus or section, with Hydr. appen- 
diculatum , which affords the same singular cha¬ 
racter in the calyx, to which l shall give the 
name of Decemium. This species has fleshy 
stems and white flowers. 
98. Anagaliis arvensis L. var. fl. albis.—Mouron 2 
Rob. p. 377. 
99. Aretia alba Raf. Villosa, foliis patulis sessilibus 
cuneato-spathulatis, obtusis, integris ; floribus 
pedunculatis, sub-racemosis ; calyx ventricosus, 
corolla tube inflato, lacinis emarginatis. Raf.—* 
Aretia Rob. p. 377. Not unlike the Androsace 
occidentalis of Nuttal and Pursh, in the leaves; 
<. but differs in the flowers and inflorescence. 
The whole plant is thickly covered with hairs ; 
the leaves are all radical, two inches long and 
half an inch wide; flowers small, white, calyx quin- 
quifid persistent, capsul five seeded. The genus 
Aretia was not known to be found in America. 
100. Amsonia latifolia. Michx.—Menyanthe 1 . Rob. 
p. 377. Stem strong, round, smooth ; leaves nu¬ 
merous, alternate, smooth, glaucous underneath, 
oval and on short petiols : flowers pale lilac ; 
calyx urceolated, five toothed, partitions of the 
corolla linear acute, tube hairy inside, stigma glo¬ 
bular with a circular flat edge underneath. Com- 
mop in the meadows above the river Vermilion : 
blossoms in April. 
101. Dichondra carolinensis* Michx.—Menyanthe 
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