290 Mil J. MIEBS ON THE SYMPLOCACEJ2. 



generic character of Ilopea (Gen. p. 175) omits mention of its 

 seed ; but be adds " an corculum pericarpio inclusum ? " 



1. Protohopea tinctokia, nob. — Hopea tinctoria, Linn. Mant. 

 i.p. 105 ; Syst. Veget. edit. 14, p. 609 ; Catesb. Carol, i. p. 54, tab. 54 ; 

 Pers. Syst. ii. p. 74 ; Jiiss. Gen. p. 157 ; Mich. Arb. iii. p. 61, 

 tab. 173 ; Pursh,Fl. N. Amer. ii. p. 451 ; Nuttall, Gen. ii. p. 183 ; 

 Ellis, Sp. Carol, ii. p. 173 ; Lam. Bid. iii. p. 135 ; Gaertn. Fruct. 

 iii. p. 140, tab. 209. fig. 2.— Symplocos tinctoria, Willd. Sp. PI iii. 

 p. 1436 ; L'Heritier, Linn. Trans, i. p. 176 ; A. DC. Prodr. viii. 

 p. 254. In America calidiore ad Carolinam : non vidi. 



2. P. cebntta, nob. — Symplocos cernua, Benih. {non Bonpland) 

 in PI. Hartw. p. 78. — Symplocos Hartwegi, A. BC. 1. c. p. 252. 

 In Guatemala ad Santa Maria {Hartweg 545) : non vidi. 



The Hopea dichotoma of Willdenow and Vahl appears to belong 

 to Bicliptera in Acantliacece ; it is near B. bivalvis, Juss., and is 

 from Tranquebar (see Lam. Diet. Suppl. iii. p. 57). 



Pb^alstoxia. 



The genus Alstonia, established by the younger Linnaeus in 

 1781 1 upon a manuscript name given by Mutis, was acknowledged 

 by Lamarck in 1783 2 ; L'Heritier in 1790 3 united it with Sym- 

 plocos ; Willdenow in 1800 followed this example 4 ; Bonpland in 

 that year did the same 5 ; Kunth in 1818 accepted this view 6 ; it 

 was made a section of Symplocos by DeCandolle in 1844 7 . In 

 1838, however, Mr. Bentham proposed to restore Alstonia as a 

 good genus on account of its differential characters 8 ; and I now 

 propose to follow up his recommendation. But a difficulty here 

 again occurs, as in the preceding genus. Eob. Brown in 1844, 

 considering that Alstonia was repudiated 9 , gave this name to a 

 genus of the Apocynacece ; and this view has been universally ac- 

 cepted by botanists. In following Mr. Bentham's recommenda- 

 tion, so strongly urged, I propose to give it the name of Prcealstonia, 

 in order to vindicate its prior title. Its leading features are:— a 

 corolla of 8 or 10 segments, always alternately arranged, for the 

 most part free and reflected, in 2 series, all united at the base into 

 a short tube ; the fruit is a dry drupe, crowned by the teeth of 



1 Suppl. Plant, p. 264. * Diet. p. 95. 3 Linn. Trans, i. p. 170. 



4 Sp. Plant, iii. p.l43fi. 5 Plant. Mqnin. i. p. 131, tab. 51. 



6 H. B. K. iii. p. 256. 7 Prodr. viii. p. 247. 8 Linn. Trans, xviii. p. 229. 



9 Mem. Wern. Soc. i. p. 75 ; A. DC. /. c. p. 408. 





