1917] BRIEFER ARTICLES 81 
and distinctive; and it seems to us that there is only one possible inter- 
pretation of the problem which will conform to what experience has 
shown to be the logical and practical treatment of cruciferous groups. 
In pursuance of this view it becomes necessary to consider Draba 
eurycarpa as representing a generic type intermediate in some respects 
to Parrya and Phoenicaulis, and more closely related to these genera 
than to any others, but at the same time more distinct from either of 
these than they are from each other. In recognition of the notable 
work of AVEN NELSON, we propose that this genus bear the name 
Anelsonia. 
The — characters of these related genera may be sum- 
, marized as follows 
Pods ovate-lanceolate, mid-vein obscure; sectame merely ‘membranous ranous; 
seeds with a loose cellular epidermis, not margined, areolae not tortuous; 
pubescence of branching hairs; petals white, little exceeding the pubescent 
eras: Shes SS 2... ee ee _Anelsonia 
Pods narrowly ensiform or more or less attenuate at both base and apex 
mid-vein evident; seeds smooth without loose cpaletnis or, if this i is present, 
more or less margined; uae usually red purple, di 
Pets more or less attenuate at both base and apex; septum bearing a 
conspicuous network of superimposed fibers; seeds with a loose cellular 
epidermis usually more or less winged, areolae not tortuous; | 
Pods narrowly ensiform; _ septum merely 
¥. 
yy tM tee, 
and stellate; stigma subentire. Be Ae rrgec eis ae . Phoenicaulis 2 
Anelsonia, gen. nov.—Siliqua compressa ovato-lanceolata costa 
media i oe septo membranaceo-hyalino, evanido, Stigmati fere 
a Anelsonia_ ann (Gray), oo a eurycarpa Gx, a 
eae ‘Am. Acad. ee on CT halhaas Shares: A. eapeae ot. € 
