and on the Structure of the Seed in that genus. 187 



its funicular support, occurs in the seeds of the tribes Hetero- 

 cliniea and Anomospermeaz of the Menispermacete, only that in 

 these cases there is no extraneous growth of any enveloping aril- 

 lseforrn tunic, such as we find in Lardizabala : in the former cases, 

 where the carpels are always unilocular and uniovular, and where 

 the growth of the pericarp is constantly upon its dorsal face, 

 while that of the ventral face is more or less stationary, it is 

 easy to conceive how the ovule in its growth partakes of a similar 

 kind of increment, and becomes moulded round the stationary 

 fulcrum of its placentary attachment. But in Lardizabala, where 

 the ovaries are multiovular, the partial protrusion of the placenta 

 is not accompanied by an expansion of the walls of the pericarp. 

 Something more analogous, however, occurs in the Myrsinacece, 

 where the ovules often become moulded round the globular free 

 placenta, and an arillus, in the shape of an inflated entire 

 membranaceous sac, generated from the root of the placenta, 

 encloses the seed together with its support *. 



There is, however, a close analogy in the structure of the 

 seed of Lardizabala with that of the fVinteracece and Canellacece, 

 if we except the circumstance of the deep cavity in the albumen, 

 which does not occur in the two latter families. We find in all 

 these cases a correlative, peculiar outer crustaceous shell ; in the 

 next place we see the same corresponding intervening layers of 

 loosely aggregated oleiferous cells ; then a similar fleshy tunic 

 enclosing the cord of the raphe, and a still inner integument 

 investing the albumen, — all bearing a striking analogy to the 

 structure I have described in Illiciumf, This structure shows 

 the very close affinity that exists between the families last men- 

 tioned and the Lardizabalacea ; and in discussing the question 

 of these affinities with other orders of the Polycarpica, I have 

 already suggested the place that the Lardizabalacece should 

 occupy, relatively to them, in the system J. 



Ruiz and Pa von, who founded the genus Lardizabala, men- 

 tion (Syst. i. 286) two species, both natives of Chile, the one 

 with biternate oblong leaflets unequal at their base, the other 

 with triternate ovate leaflets. DeCandolle (Syst. i. 512) am- 

 plified these brief characters by fuller details founded on his 

 observation of dried specimens, adding at the same time the 

 feature of the peculiar petiolar leaflets, which he termed bracts, 

 and which he described as being round and cordate in the former 

 case, and oblong in the other : he observed respecting the latter, 

 that he found the leaves always biternate, as in the other species, 

 not triternate, as mentioned by Ruiz and Pavon. L. 3-ternata 



* I will at some future time describe the observations I have made on 

 this singular structure. 



t Ante, p. 112. % Ante, p. 36. 



