188 ESSAYS. 
which he seems to have invented a new (4) order. Moreover, 
this is essentially identical with the “ cochlear” zstivation 
of the same work (not of Lindley) ; and Eichler, in his ‘“ Blii- 
thendiagramme,” adopts this name (unsuitable though it 
be) for this particular arrangement, whatever be the position 
of the inclosed or inclosing petal. A glance shows that this 
supposed “ true imbricate xstivation ” is a slight and not very 
uncommon deviation (by the displacement of what should be 
the interior margin of one of the petals during growth) of the 
mode II, variously termed obvolute, convolute, or contorted 
eestivation. But it is so intermediate between this and the 
quincuncially imbricate as perhaps to justify Brown in apply- 
ing the name imbricate generically to all the overlapping 
modes. I see, since the above was written, that Eichler, in 
his “ Bliithendiagramme,” in effect does this. I find also, 
that Eichler uniformly employs the term convolute, or con- 
volutive, as I have done, instead of contorted. I should hope, 
rather than immediately expect, that this use would become 
general. 
