TEBEBINTHACEJS. 



377 



ly. MAPPIA SEEIES. 



There are great analogies between the flowers of Mappia ^ and those 

 of Corynocarpus^ from which they can only be said to differ essentially 

 by the fertile stamens being alternipetalous and the existence of two 

 collateral ovules instead of a single one. The flowers are some- 

 times polygamous and more generally hermaphrodite (fig. 325, 326). 



Mappia {Icadna) senegaUmis. 



Fig. 325. Hermaphrodite flower (|). 



Fig. 326. Longitudinal section of hermaphrodite 

 flower. 



On their short convex receptacle is inserted a gamosepalous calyx, 

 with five^ more or less deep divisions and five alternate petals, 

 valvate in prefloration.^ The androceum is formed of an equal number 

 of alternipetalous hypogynous petals, also alternating with the lobes, 

 usually but slightly developed, of an hypogynous disk ; they have 

 free filaments * and bilocular, introrse anthers, dehiscent by two lon- 

 gitudinal clefts.^ The gynseceum is free, superior, formed by an 

 unilocular ovary surrounded by a more or less developed disk, and 



1 Jacq. Mart, Sohcentr. 22, t. 47 (nee Sohkeb.). 

 — MiERS, Contrih. i. 62 (part.),.t. 6. — B. H. Gen. 

 3S1, n. 22. — H. Bn. in Adansonia, iii. 367. — 

 Zeretia Vellos. Fl. Flum. iii. 99, t. 2. — Miers, 

 he. cit. 60, t. 7. — Icacina A . Juss. in Mem. 

 Soc. Hist. Nat. Par. i. 174, t. 9.— DC. Prodr. i. 

 534. — ^Bndl. &m. n. 5488. — ^Miebs, loe. cit. 55, 

 t. 4 (part.).— B. H. Qm. 352, n. 26. 



2 Exceptionally six, 



^ They are covered with hairs, sometimes on 

 both sides, sometimes on one only. Their apex, 

 as nearly always occurs in the plants of this 



series, is inflected and, joined to the summits of 

 the other petals, forming a sort of small key- 

 stone which hangs, in the bud, between the 

 faces of the approached anthers. 



* Sometimes narrow and linear, sometimes 

 more or less thick and dilated at the base. 



' In certain American species, the connective 

 is dilated in its upper portion into a blade, flat- 

 tened externally and internally and attenuated 

 at the apex, towards the base of which are, in- 

 ternally, the two distant cells of the anther. 



