NEW PLANTS FROM NORTH DAKOTA 143 
mm. longi, lineares, longiores quidem tubo corollae compares. 
Corolla 6-8 mm. longa, tubulata, 4-5 lobata, colore lilacino (vel lobi 
lilacini, tubus autem roseus), lobi 3x2 mm. diametris, corona 
paucis vel nullis setis vestita. Segmenta corollae ovata, obtusa, 
soli late aperta. Siliqua teres, sessilis, matura lobos calycis nonnihil 
excedens. 
Annual. Stem simple or branched from the base, terete or 
angular, purple-colored, 1—2 dm. high, the branches curved cen- 
trally, the internodes being either longer or shorter or of equal 
length with the leaves. Leaves not scabrous-margined. Basal 
leaves spatulate, stem leaves lanceolate-linear. Lower stem 
leaves broadly lanceolate, with the median axis bent or a trifle 
falcate. Flowers in the axils of the leaves, either solitary or on 
short branches not exceeding the length of the leaf, each branch 
bearing 2 to 5 flowers, the central ones on pedicels 5-10 mm. 
long, the peripheral on pedicels 2 to 3 mm. long. Calyx tube 
2 mm. long, its lobes 4 or 5, unequal, 3-4 mm. long, linear, the 
longer equaling the corolla tube. Corolla 6-8 mm. long, tubular, 
4-5 merous, lilac colored, or the lobes lilac, the tube rose colored, 
the lobes 3x2 mm. in diameter, the crown with a few or no setae, 
Segments of the corolla ovate, obtuse, opening widely to the 
sunlight. Capsule terete, sessile, when ripe somewhat surpassing 
the calyx lobes. 
In order not to mistake this species for A marella acuta (Michx.), 
it has to be remembered, that the latter has minutely scabrous 
leaf margins, flowers 10-16 mm. long, calyx almost 5-parted and 
its lobes lanceolate, and the corolla blue with acute, lanceolate 
lobes. 
This species is only to be found near springs and is so attractive 
to horses, that it is difficult, where they can reach them, to collect 
plants with entire stems. Horses do not touch the other gentianeae 
growing in the same pasture as this. It was discovered by Miss 
Gurli Lunell on August 28, r911, at Butte, Benson County, and 
was named in her honor. | 
Amarella theiantha sp. nov. 
Planta annua. Caulis fere simplex vel modice vel effuse de 
basi ramosus, teres vel angulatus vel leviter quoque aeque cum 
ramis alatus, flavus, strictus, 1-4.5 dm. altus, internodi in plantis 
maioribus circiter 4.5 cm. longi. Folia basilaria ovalia vel spatu- 
