138 
ROYAL HORTICULTURAL SOCIETY. 
Jacquin's types, that P. quad/rangularis with deeply- winged 
steins and oviform fruit, P. alata with narrowly-winged 
stems and obovoid or pyriform fruit, and P. macrocarpa with 
deeply winged stems and very large, oblong, obtuse, sulcata 
fruits (all three, moreover, differing materially one from the 
other in the arrangement and number of the parts of the 
corona) — are specifically distinct. With all deference to 
Messrs. Triana & Planchon, whose opinion is entitled to 
respectful consideration, I must still consider P. macro- 
carpa as totally distinct. My reasons for so doing are stated 
at length in Gard. Chron., 1869, 1012, and the plates in the 
riora Erasiliensis above cited will show more clearly than 
words would do the great difference between the flowers of 
P. alata and P. macrocarpa. I have now repeatedly seen 
the three species as grown in English gardens side by side, 
and cannot doubt their distinctness. At Kew, in the Palm 
Stove, P. quadra^igularis and P. macrocarpa are grown side 
by side, and no one who sees the two in juxta-position in 
flower and fruit would confound them. The characters 
derived from the foliage, stipules, and wings of the stem 
are, it is true, less trustworthy. The question remains 
whether there is a large-fruited variety of P. quadr angular is ^ 
or whether Jacquin's variety, sulcata, should be referred 
to P. macrocarpa. 
Messrs. Triana & Planchon think it possible that Jacquin 
may have confounded P. alata with P. quadrangular is, and 
that the true P. quadrangular is is what he calls the variety 
sulcata. Eut Jacquin's description of the petiolar glands and ^ 
of the fruit is that of P. quadrangularis, and not of P. alata. 
The type specimen of Jacquin in the British Museum does 
indeed bear out MM. Triana and Planchon' s opinion, so 
far as relates to the narrow wings to the stem ; but the 
petiolar glands are six in number, and the nerves of the leaf 
are not arranged as in P. alata. 
It must also be borne in mind that the plants in ques- 
tion have been cultivated for a long series of years over a 
wide range, and that seminal and hybrid varieties have 
in consequence been produced. 
49. P. tiliaefolia. Cav.^ Diss, x., t. 285 ; Mast, in Plor. Brasil., 
I.e., 562. 
Peru. 
This is mentioned in garden catalogues, but I have not 
seen a living specimen. 
