NEW PLANTS FROM NORTH DAKOTA. 207 
Senecio Purshianus Nutt. var. viridescens var. nov. 
ure is very soft and herbaceous. It grows in places thoroughly 
exposed to the sun, preferably high hills. Its flowering time is 
une, and it is common in central North Dakota. 
Some time ago I submitted this variety to Dr. E. L. 
Greene, asking him to describe it for publication. He express- 
ed his opinion of it in a letter to me, but did not promise to 
publish it. In introducing it the golden rule of giving eve 
one his due justifies and commands my acknowledgement on 
this indebtedness to Dr. Greene. 
Corisperm”Simplicissimum nov. sp. 
Planta annua, gracilis, erecta, simplex usque ad inflores- 
centiam, parte media e tribus valde foliosa, foliis partis in- 
ferioris e tribus probabiliter pallescentibus et eaducis. Planta 
tota, imprimis pars ejusdem superior, pubescens etiam aetate, 
circa 3 dm. alta altiorve, in inflorescentiam multiplicem termi- 
nans, unius spicae longae terminalis, et 1-7 spicarum breviter 
pedunculatarum, vel aliquando subsessilium, angustartum, di- 
vergentium, in supremis foliis axilarium. Folia anguste lin- 
earia, cuspidata, 2-4 cm. longa, 1 mm. lata vel minus, pubes- 
plant, especially in its upper part is pubescent, even in age, and 
bout 3 dm. tall, or taller. Leaves narrowly linear, cuspidate, 
2-4 cm. long, 1 mm. wide or less, pubescent. Bracts 2-19 mm. 
long, 1-1.2 mm. broad, awlshaped, scarious-margined, all as 
wide or wider than the utricle. The inflorescence is composed 
of one long spike on top, and 1-7 short-peduncled or sometim 
Subsessile narrow, divergent spikes in the axils of the upper 
S. 
The lateral spikes are 1-2.5 em. long, narrow, and the ter- 
minal spike is 3-7 cm. long, not quite as narrow. All the bracts 
in the spikes are more or less loosely crowded. Fruits wing- 
