Benepict: Borrycutum JENMANI IN Cusa 99 
obliquum, the latter being said to be at least a month 
later in the same locality. 
The explanation of the relationships of the extremely 
puzzling forms in the Botrychium ternatum group, here 
recognized as species, is not a simple one from our present 
_ knowledge of these plants. It is comparatively easy to_ 
STADE most of them in an evolutionary scheme, recog- : 
: aphic distribution and consequent climatic | 
2 wo chief causes of variation. This ex plana-_ 
r, clears up only : a ame _ the difficulty, and 
ins is the perpl More: facts are — 
the present knowledge, it aici ae 
Car i ee Cc Bin Gs 
1 t most of tl WAG COSUTICE LORIN att Ves iS ek 
f species. It ms b t id , especi- 
ally if discovered by ps diate it a eae a considerable 
chan, ange in our conception of these plants. The most 
promising field would appear to be along a Ke oe 
ee digree cultures, bu bas unfort inately ill remains tc to be : 
ah ee agieeovered how t mn: may be raised fr 
os pore condition. oe eee 
- Conumnra Hn 
NIVERSITY. 
