320 
lanceola tum. 
gramineum. 
arvensis. 
saginoides. 
vulgatum. 
viscosum . 
DECANDRI A TETRAGYNIA. Micropetalum. 
2. M. glabrum ; foliis lanceolatis utrinque angustatis, flo- 
ribus particulars, petalis ovatis brevissimis. — Pers. I. c, 
Mich. I. c. 
On moist rocks : Canada to Pensyl vania. 7/ . July. v. v. 
3. M. glaberrimum 5 foliis linearibus erectis, panicula ter- 
minali laxa, pedicellis filiformibus, petalis lanceolatis 
longitudine calycis. — Pers. I. c. Mich. I. c. 
Near springs and shady rocks : New York to Virginia» 
1/. June, July. v. v. 
A. fasciculata probably belongs to this genus. 
V. P ENT AG YNIA. 
391. S PERGULA. Gen. pi. 798. 
1. S. foliis filiformibus verticillatis, panicula dichotoma, 
pedunculis fructiferis reflexis, seminibus reniformibus. 
Willd. sp. pl. 2. p. 818. 
Icon. FI. dan. 1033. Engl. lot. 1535. 
In sandy fields : Pensylvania, New Jersey, &c. © . 
June, July. v. v . 
2. S. foliis oppositis subulatis nudis, pedunculis solitariis 
longissimis glabris. Smith Jl. hrit. 2. p. 504. 
Icon. Engl. hot. 2105. 
In sandy fields: Carolina. ©• June, July, v . s. m 
Heri. Enslen. 
392. CERASTIUM. Gen. pl. 797. 
1. C. hirsutum, viscidum, csespitosum 5 foliis ovatis, pe- 
talis oblongis calyce subaequalibus, floribus pedunculo 
longioribus. Smith Jl. hrit. 2. p. 4 q 6, Willd. sp . 
pl.Z.p.Bll. 
Icon. Engl. hot. 789. Vaill. par. t. 30 .f 3. 
In dry fields and among rocks 5 frequent : New England 
to Pensylvania. 0. April — June. v.v. The flowers 
of the whole genus are white. 
2. C. hirsutum, viscosum, diffusum ; foliis lanceoiato-ob- 
longis obtusiusculis, petalis obovatis calyce vix longio- 
ribus, floribus pedunculo brevioribus. — - Willd. sp. pl. 2. 
p. 812. 
