WESTERN MEADOW RUE 293 
lobis breviculis acutis, terminalia 2-3 cm. longa, lateralia 2 cm. 
longa, interdum oblongo-ovalia et integerrima. Carpella breviter 
fusiformia, sessilia, obtuse costata, glaucescentia et minutim 
hirtella. 
Very elegant slender red-stemmed almost white leaved plant 
from Valhalla, North Dakota, collected 8 Aug., 1902, by L. R. 
Waldron; type specimen in Herb. Univ. Wyoming. It is the 
only member of the group of T. purpurascens I have seen with 
glaucescent as well as pubescent carpels. 
Thalictrum Sandbergii nov. sp. 
Caulis metralis, validulus, anguloso-striatus, sparse et minu- 
tim setulosus folia ad 5 ampliuscula firmaque gerens et vertice 
paniculam fertilem pro planta parvam. Foliola supra glauco- 
virentia et sub lente sparsissime minutim et adpresse setulosa, 
subtus glauca et venis elevatis atque pube albo notata, terminalia 
2-3 cm. longa late obovata, leviter et obtuse 3- lobata, lateralia 
minora, oblique ovalia, saepe integra, interdum 1-—3- dentata. 
Carpella immatura ovalia, sessilia, pilis brevibus albis crebre 
hirsutula. 
Remarkable species of the white-stemmed group, known 
to me in only a single but very good plant on U. S. Herb. sheet 
340, collected at Itaska Lake, Minn., July, 1891, by J. A. Sandberg; 
his No. 1193, labelled “7. polygamum.’’ The species would be 
another of those confused elements of the guessed-at ‘7. dasy- 
carpum”’ of recent writers. The strictly staminate plant of T. 
Sandbergi would be an interesting thing to see, if such exist. 
The type specimen is mainly pistillate, but two or more stamens 
persist in most of the heads of perhaps only half-grown carpels. 
Thalictrum Wightianum nov. sp. 
Caulis praealtus, striatus, glaucescens, glaberrimus, purpuras- 
cens, foliis amplis sessilibus obsitus. Foliola subcoriacea, superne 
pallide virentia et venis tenuibus albidis divergentibus notata, 
inferne glauca, ibique venis albidis elevatis ramossisimis mani- 
festim reticulata, et setulis perpaucis albis, pracipue secus venis, 
obsita, terminalia 3-4 cm. longa, ambitu obovata, basi subcordata, 
apice leviter, late et inaequaliter 3-lobata, lobis obtusis, lateralia 
terminalibus dimidio minora, interdum ovalia, obtusa et inte- 
gerrima. Panicula fertilis nuda, laxe lateque ramosa usque 4 dm. 
