LINAGES. 49 



with five alternijietalous cells is surniouutecl by a single style with 

 discoidal or capitate stiginatiferous apex entire or but slightly lobed, 

 and is inserted in a small receptacular cup bordered by an annular 

 or cupuliform disk. The five imbricated sepals and the five con- 

 torted petals are slightly perigynous, as is the andi'oceum, inserted 

 outside the disk formed of from ten to fifteen or twenty stamens. 

 In each of the ovary cells are found two collateral desceudent incom- 

 pletely anatropous ovules. The exostome, superior and exterior, is 

 already elongated and tubular in the flower, and it becomes much 

 more so in the seed which it surpasses several times in length, while 

 upon each side of the hilum a desceudent appendage is developed of 

 variable length. The fruit, at the base of which persists the recep- 

 tacle and perianth, is a septicidal capsule of which each cell is more 

 or less completely divided into two by a false centripetal partition. 

 The two or thi-ee known species of Ixonanthes ^ are trees from tropical 

 Asia, with alternate, simple leaves with or without stipules, and 

 with small flowers disposed in axillary cymes, dichotomous and long 

 pedunculate. 



III. EEYTHEOXYLON SERIES. 



The flowers of Erythroxijhn '^ (fig. 80-87) are regular and henna- 

 phi'odite with convex receptacle, bearing five sepals,^ free or slightly 

 united at the base, quiucuncially imbricated or almost valvate in the 

 bud, and five alternate caducous petals. They are contorted or im- 

 bricated in pr«floration, and then.' inner surface presents at the base 

 an appendage of variable form generally divided into two symme- 

 trical lobes. "^ The stamens are double in number to the petals, five 



Vol/. Bot. 217. — Brewstera R(EM. Syn. i. 132, mss. (exENDl.).- --HoiJ/awn Commeus. mss. (ox 



HI. — P'uroliaTih. Mus.Lngd.-Bat,i.\"9. E.ndl.). — Slriidilia Spreno. N. Eutd.ni. 59; 



1 Guirr. PI. Cautoi: 11, t. 1.— Champ, in Si/st. ii. 391. — SV(/i;a H. B. K. Mv. Gen. et 



Trans. Imn. Suc.xxi.t. 13. — MiQ. Fl. Iml.-Bat. Spec. V. 175. 



i. p. ii. 494 ; Suppl. i. 484. — Walp. Itep. v. ' Here and there are tetramerous or even 



37C ; Ann. iv. 351 ; vii. 464. hexamcrous flowers. 



' L. Gen. n. 575 [Enjthroxijlum). — J. Oen. * In E. C'licu, for instance, this appendage 



253. — Lamk. Diet. ii. 392; Suppl. ii. 5SG ; III. lias below the form of a kind of irregular por- 



t. 383. — DC. Prodr. i. 573. — Tuiip. in Diet. Sc. ringer with the concavity turned inwards, 



Nat. Atl. t. 1G7- — Mart. Mun. Erythrox. in Ahli. with border glandular at the base. Above, it 



Ahud. Munch, iii. 27'J, t. 1-10 (1840). — Spach, is surmounted by two upright prolongations 



Suit, a Buffiin, iii. 74. — Emil. Gen. n. 5597. — B. situated one at the right the other at the left 



H. Gen. 244, n. 7. — H. lis, in Payer Fum. Nat. of the midrib, one symmetrical to the other and 



403. — Bakeu, Fl. Maurit. 34. — ?«««?«« Commers. omarginate at tho summit. 



VOL. V. H 



