ON PTEROCARYA STENOPTERA, 379 
nating each rachis [¢.e., what I have eae receptacle] an abortive 
leaf-bud, or so many abortive female flow s there are bracts”; but 
he added, that this was not given as a opinion, as the matter 
requ much research and consideration. I believe, howeve 
consideration of the v: differences in 0 of the 
eac 
a with a icel; and that, while the anterior and two inner- 
st lateral lobes of ‘the perigone are suppressed, the three foliaceous 
prosenses at the extremity of the receptacle represent respectively the 
th ~ Ne flower is soldered with a s I think its abnorm 
elongated shape, and the existence of an inte bar between the space 
apenbiod by the stamens and the junction of the seated with the 
xis of the catkin, go far to prove. And it may be worthy of con- 
je whether, in other instances within the order, the unu usual 
shape of We flower is not explicable in a similar way. 
structure just described, the Chinese species differs so 
much hein its Caucasian relative that it will be convenient to regard 
Y as constituting a special sub-genus, for which I propose the name 
of Eocarya, and ee Be may be thus suc ecinctly characterised :-— 
Floris. masculi perigonium triphyllum, phyllo anteriore Staming 
is. tami na 
eri 
dentia, tri- quadri- seriata. Fl. fem. tigmata persistent ux 
; 4- a medio 1- locularis, lacunis omnino nullis; utrinque ala 
adscendenti, eam ‘aids velante, secus margines faciei ica’ a basi 
apice fere tenus affixa, aucta, 
P.S.—Since the above was written, I have received, through the 
kindness of M. Maximowicz, a specimen of Pt. rhoi, alia, . - 
From the examination of an immature fruit, the Japanese tree, by 
a texture, venation, none oe insertion, and wideness of the wings, 
the general sha longer conical free summit of the nut, 
ieee ars to me much ais nearly akin to P¢. caucasica than the 
Chinese species. 
* Endlicher describes the’ stamens as “ receptac any, Aig complanato cu! oe 
hypocalycine nervo medio confiuenti inserta” erg , 1126); and Parlato 
‘* Stamina rvo medio adnato inserta”’ (Fl. "Ital. iv. , 205) ; but this 
acarcel ly waffoce as an explanation of the floral structure of the Chin ese speci 
