364 Mr. J. Miers on the Genera Aptandra^ Cathedra, 



embiyo is imbedded ; the radicle is superior, short, thick, and 

 clavate ; the cotyledons are of equal length, but much thinner 

 and narrower. 



9. Liriosma macrophyllay Bth. MSS. — Olax macrophylla, Bth, 

 Trans. Linn. Soc. xviii. 678 ; — ramulis glabris, striatis ; foliis 

 lanceolato-oblongis, utrinque acutis, summo gradatim acumi- 

 natis, acutissimis, textura tenui, ubique glaberrimis, superne 

 sublucidis, subtus pallidioribus, opacis, nervis paucis sese 

 arcuatis breviter divergentibus, paullo prominentibus, reticu- 

 latis, rachi subtus prominulo et sulcato, margine valde re- 

 flexo, petiolo brevissimo, crassiusculo, transverse ruguloso; 

 racemis axillaribus, 6-10-flori'fe. — Rio Casiquiare, in Brasilia 

 Septentrionali (Spruce, 3312). 



The leaves are 5^-5 J inches long, 2|-2J inches broad, on a 

 petiole of 2 lines ; the raceme is 3-4 lines long ; the drupe is 

 9 lines long, 5 lines in diameter, supported on a pedicel 2 lines 

 in length. 



To some of the genera of the Icacinacecs formerly described I 

 have to make the following additions : — 



Leretia. 



1. Leretia Vellozii, nob., huj. op. 2 ser. ix. 392; Contrib. Bot. 

 i. 62. pi. 7. — L. cordata. Veil. Flor. Flum. iii. tab. 2. — Rio 

 de Janeiro. 



2. Leretia ampla, n. sp. ; — ramulis angulatis, glaberrimis, cortice 

 laxo, rugoso; foliis majusculis (floralibus minoribus), oblongis, 

 imo obtusis, e medio gradatim acutis, mucronatis, submem- 

 branaceis, utrinque glaberrimis, subnitidis, pallescentibus et 

 concoloribus, nervis conspicuis obliquis sese arcuatis subtus 

 prominentibus, valde reticulatis, venis transversalibus, mar- 

 gine integro, petiolo rubro, tereti, striato; paniculis laxis, 

 folio brevioribus, infra axillas oppositifoliis, vel terminalibus, 

 valde ramosis, multifloris, vix pubescentibus ; floribus minori- 

 bus, petalis extus adpresse pilosis, intus breviter cottoneo- et 

 incano-tomentosis. — Prope San Carlos, Rio Negro, Amazonas 

 (Spruce, 3776). 



Its leaves are 8^ inches long, 3J inches broad, on a petiole 

 J inch in length ; the floriferous leaves are only half this size, 

 or still smaller. The very branching inflorescence is 2| inches 

 broad, as well as long ; the flowers in bud are somewhat globose, 

 1 line in diameter, on short pubescent pedicels. 



3. Leretia nitida, n. sp. ; — ramulis angulatis, glabris, lenticellis 



