GENERA PLANTARUM. 
Gens 3. PLEUROTHALLE. 
Monocotyledones, J. Endorhize, Ricu. Endogene, De Cann. 
The characters hitherto selected to pont Soave Dicotyledones and 
and need n itulation. here 
which are a in diameter, by woody fibres added to their 
circumference, though none of them have medullary rays converging 
towards the pimus so far therefore the discovery of a character 
in their organs of vegetation remains to Dzsroxrarwzs, and the 
necessity of admitting these to have some influence, even in generic 
combinations, i is confirmed. The lateral evolution of the Plumula 
in Monocotyledones during germination, appears to me by far the 
most constant difference of all; few persons have raised so many 
seeds, and not having met with any real exception to it, I eall 
arri 
up higher when the stem shoots out, as Mresti faithfully shows in 
the Annales du Muséum. With respect to the nature of the floral 
envelopes in Monocotyledones, I cannot think with many botanists 
of the present day, that they are invariably calycine ; for in colour, 
insertion, , proportion, substance, ind. even n sometimes number, 
they closely resemble those of Dicotyledones, varying at the same 
time spa e the same manner, with respect to one another. 
Nor is rence of opinion a paltry squabble about names; it 
cese several ph physiolo gical 1 facts, and plain analogies regarded by 
ODF VGI. 
Dnxaxpzs, not only when this wild. theory of ADANSON’s Was more 
extensively promulgated by A. L. pe Jussrev in 1789, but during 
the whole of his life, thought it quite absurd, and tacitly contra- 
icted it, as he always said that he would, under many generic 
characters in the second edition of Hortus Kewensis. Crocus, 
B 
