292 AMERICAN MIDLAND NATURALIST 
The fev new species, of which descriptions follow are mostly 
of that group of which the Virginian and Carolinian T. purpurascens 
is typical. Even in the Eastern States and adjacent Canada 
several clear species have been from time to time confused with 
that; and finally—and needlessly—that old name has been made 
to give place to a newer one in the newest manual. As for the 
several climatic regions lying between the northern Alleghenies 
and the middle Rocky Mountains, nothing seems to me more 
improbable than that true T. purpurascens should occur in any of 
them. The differences of environment are far too great. 
Thalictrum Nortoni nov. sp. 
Caulis 4-5 dm. altus, striatus, glaber. Foliola firma, superne 
glabra, glaucescentia, haud conspicue venosa, inferne pallida, 
ibisque venis tenuibus lutescentibus et lateraliter sparsim hirtellis 
percursa, ambitu subquadrato-obovata, basi subcordata, supra 
medium 3-—5- lobata, lobis incisis acutis, terminalia 3 cm. longa, 
lateralia minora. Panicula plantae foemineae subcongesta. Achenia 
oblique fusiformia, subsessilia, costis continuis, valde elevatis 
acutis et leviter sinuosis notata, pericarpio toto sub lente minu- 
tissime asperato. 
Type specimens of this far western member of the T. purpur- 
ascens group are in the herbarium of the New Mexico College of 
Agriculture and were collected in Riley Co., Kansas, in 1896, by 
Mr. J. B. Norton. They consist of three sections of one pistillate 
plant in fruit, but with basal leaves cut off and probably thrown 
away. What are probably the flowers of the same speces, by he 
same collector and from the same place, are in the herbarum 
of the Wyoming University. The specimens are a fragment of 
a staminate plant, and one of a pistillate, both in good flowering 
state. The stamens are pendulous, the filaments being capillary, 
and hardly clavate under the anthers. 
Thalictrum albens nov. sp. 
Planta metralis, caule tenui glabro, laeviusculo et pulchre 
purpureo-rubente, foliis paucis remotis  sessilibus albentibus 
instructo, vertice paniculam fertilem parvam subaphyllam gerente. 
Foliola submembranacea, utrinque valde glauca, supra sparsim 
setulosa, subtus magis crebre albo-hirtella, ambitu subquadrata 
vel quadrato-obovata, basi plerumque obtusa, apice 3-5- lobata 
