494 The Botanical Gazette. [December,, 
his names than to use names of only partial and doubtful ap- 
plication given by writers who knew very little about the 
subject. 
I do not recognize the authority of the makers of the 
Rochester and Madison codes, nor can I approve of the 
methods by which final judgment is forestalled, and I do not 
consider that any one is bound by them 
I believe in the desirability of uniformity, and am ready to 
sacrifice my own opinions without hesitation whenever Kew 
and Cambridge, Paris and Berlin shall agree upon some uni- 
versal basis, but until that time I prefer to be guided by the 
principles laid down by the illustrious de Candolle, and lately 
substantially reaffirmed in the recommendations made to the 
Botanical Section of the American Association in August, 
1894, by the committee on the nomenclature of plant diseases. 
The name ASPIDIUM was first used by Swartz for the 
whole genus very nearly as it is now understood, and it ought 
to be retained as there is no earlier name with the same scope 
and application. 
However if any think otherwise and prefer to divide 
Aspidium into two genera they can use either Dryopteris, 
_Nephrodium or Lastrea for the Aspidia with reniform indusia, 
and for the benefit of such persons I have appended to my 
descriptions synonyms from which they can choose whichever 
suits them best. 
Aspidium cristatum x marginale, n. (hybrid) sp.— Root- 
stock caudiciform, stout, erect or sub-erect, crown central as - 
in A. marginale, shaggy with large pale brown ovate and 
ovate-lanceolate scales: fertile fronds 13 to 23" tall, 4 to 8 
broad across the middle of the lamina; sterile fronds one-half 
to two-thirds as large; stipites 4 to 12™ long, stramineous, 
strongly channelled, usually well clothed, especially below, 
but sometimes quite naked or sparingly scaly, with pale brown 
ovate-lanceolate or linear-lanceolate scales: laminz 10 to 20 
long, elliptic-lanceolate narrowing both ways, the lower one- 
third usually with triangular oyate obtuse pinne as in ‘)- 
cristatum, but sometimes as in A. marginale, the upper two- 
thirds more like A. marginale in outline with long acuminated 
deltoid-lanceolate or lanceolate pinnz and narrowing gradu- 
ally to the acuminate apex; pinnz variable, sub-sessile, aoe 
_ stalked, distant, approximate, alternate or opposite, 2 to 43 
long, } to 13" broad at base, narrowing gradually to the acu- 
minate apices, deeply pinnatifid one-half to two-thirds of a 
way down with oblong or sub-falcate entire or finely serrat 
