Macbride — New or otherwise interesting Plants 9 
course, the lateral veins are apparently wanting or obscure. It is 
not surprising, I suppose, that exponents of the system should 
disagree as to the pile to which certain collections should be 
referred. For instance, Standley, in sorting the material in the 
Gray Herbarium has placed Bush’s no. 367 and Nelson’s no. 483 
in the species cover of C. leptophyllum, although both these collec- 
tions are referred to C. pratericola by Rydberg, 1. c. Bush’s plant 
was secured at Courtney, Mo., and he has collected a series of half 
a dozen specimens showing the degree of variation. Standley has 
labeled part of these as representing Rydberg’s species and part as 
representing C. leptophyllum. With these specimens before one, 
the truth of the matter appears to be that all of them represent one 
slightly variable species. 
Buirum Hastatum Rydb. Bull. Torr. Club xxviii. 273 (1901) is 
another species which Standley has maintained. But this name 
(B. hastatum) represents merely a leaf-form of Chenopodium 
capitatum (L.) Asch. (B. capitatum). Reference to a series of 
specimens will show that this plant, although usually having 
sinuate-dentate leaves frequently exhibits great variation in this 
respect, some of the leaves on a given plant being quite entire 
except for the hastately lobed base. When a plant has all or most 
of the leaves nearly entire it is B. hastatum. But strangely enough 
no European botanist has deemed this condition worthy even a 
varietal name although reference to almost any manual of central 
and southern Europe will give a description of C. capitatum which 
accounts for this variation by the statement “ entire or weakly 
sinuate-dentate,”’ “ mostly slightly toothed ” or similar phrase. 
ATRIPLEX EXPANSA Wats., var. trinervata (Jepson), comb. nov. 
A. trinervata Jepson, Pitt. ii. 305 (1892). 
Jepson, Fl. Cal. 437 (1914), reduces his species to A. expansa. 
He also gives A. erpansa, var. mohavensis Jones, Contrib. W. Bot. 
xi. 20 (1903), asasynonym. Standley, N. A. Fl. xxi. 46-47 (1916), 
on the other hand, maintains Jepson’s plant as a species and raises 
Jones’s variety to specific rank. Neither of these treatments is 
quite satisfactory. A. trinervata Jepson differs from typical A. 
expansa in the repand-dentate leaves and the less united mostly 
sessile bracts; furthermore it replaces the typical form in central 
and northern California. A. mohavensis (Jones) Standley has the 
