TEREBINTHACE^. 201 



of scales or hairs on the staminal filaments.^ The Rutacece of the 

 series Zanthoxylece, with the carpels united in a plurilocular ovary, 

 and which have been called Toddaliece, differ from Burserece in having 

 leaves without glandular punctuation, a diplostemonous androceum, and 

 an exalbuminous embryo. The species otAmyris, which, we know, are 

 Rutacece, were formerly connected with Burserece, again proving very 

 close affinities. Slightly more removed from the Burserece are the 

 JSuphorbiacece, having however, like them, unisexual flowers, pro- 

 vided with a corolla, a diplostemonous androceum and ovary cells 

 whose two ovules are descendent with the micropyle exterior and 

 superior. But these Euphorbiacece are distinguished in such a case, 

 either by the absence of a balsamic juice, or by non-compound leaves, 

 the presence of an obturator above the micropyle, or the existence of 

 albumen.^ By the Spondiece and Anacardiece, this family so closely 

 approaches the Sapindacece, that it becomes difficult to separate them 

 distinctly when the flower of the latter is not irregular, and the disk 

 exterior to the androceum, . But the ovule of the Anacardiece, with 

 its known peculiarities, is characteristic of this group, particularly 

 when it is supported by the ascendent funicle, of which we have seen 

 so many examples in the description of types. The Sapindacece often 

 have an aril, a curled embryo, and usually from two to five cells in the 

 ovary ; which does not exist in the Anacardiewy and is observed on 

 the contrary in certain Spondiece. But in these the ovule -is always 

 descendent, the disk interior to the androceum, and the flowers 

 regular. Whan their carpels are independent, at least mostly, as 

 in Buchanania and Spondias, they thus become very analogous 

 to Sabia and the Connaracece, but the former has petals and sta- 

 mens superposed to the sepals and biovulate ovaries, the latter ortho- 

 tropous and ascendent ovules, and carpels dry and generally dehiscent. 

 There remain the numerous affinities of the Mappiece ^isAPhytocrenece 

 in the fijst place with the Olacineoe, amongst which some still range 

 them, and which are, we think, more apparent than real, for they are 

 always separated very distinctly^ by not having the stamens opposi- 

 petalous by the placenta being parietal, biovulate, the ovary unilocular 



^ The diplostemonous androceum has also ^ These four characters are, it is true, rarely 



heen mentioned as eharacteristio of the jB«™e»-e<8, found united in any plant belonging to this 



hut we know, that amongst them, 2^-i^owo(!AZ(W»!/s family, hut they are never all wanting at once, 



is isostemonous, and that a large number of ^ H. Bn. in Adansouia^ xi. 203. 

 Rutacea are diplostemonous. 



