204 AMERICAN MIDLAND NATURALIST. 
New Plants from North Dakota. 
J. LUNELL. E 
The native species representing the multiform Spurge fam- 
ily in North Dakota are, according to my experience, surpris- 
ingly few. I never found them on the virgin, undisturbed 
prairie, but any kind of injury to the ground enables them to 
germinate. Their minute description is as follows: 
Chamaesyce aequata sp. nov. 
Planta annua, obscure viridis, ex superiore radice 2-4 ra- 
mos crassos et tot graciles, sicut flabellum irradiantes, emit- 
tens; rami ipsi pluries furcati et profuse crescentes, humi 
prostrati, saepe 3 dm. diametro. . Caulis teres, vivide et ob- 
scure ruber. Herba tota glabra est. Folia distincte petiolata, 
opposita, 5-17 mm. longa, spatulata vel oblonga vel obovata, ad 
basim angustata, obliqua, saepe faleata, crenulate-serrulata 
de superiore parte marginis magis curvatae usque per totam 
marginem minus curvatam, vel non raro per totam circumfer- 
entiam haud indentata. Apex obtusus, rotundatus (numquam 
truncatus vel retusus). Folia saepe zonam rubram latam in 
medio habent et marginibus vivide colorata sunt. Involucrum . 
triangulatis lobis et subulatis. Semina fusca, quadrangulata, 
angulis eminentibus, inter angulos conspicue rugosa, et inter 
rugas depressa. 
Annual, dark green, from a point immediately above the 
4 thi 
ing profusely, prostrate on the ground, often reaching 3 dm. 
in diameter. The stems are terete and bright red; glabrous 
indentation quite often failing (the margin seemingly being 
along their mar- 
nd subulate, The 
