ON SOUTH-AMEEICAN APOCTNACEtE, 15 



long, 10-11 lines broad, on channelled fossated petioles 4-5 lines long : panicle terminal, 

 subtricliotomous, bracteated, glabrous ; bracts small, ovate ; flowers white, having the 

 smell of jasmine; pedicels 1^ hne long: sepals small, ovate, imbricated, somewhat 

 unequal ; tube of corolla funnel-shaped, 8 times as long as the calyx, segments oblong, 

 revolute at the apex, imbricated at the base : stamens acute, sessile, inserted within the 

 tube : ovary subbilocular, ovules attached to a thickened placenta in the axis ; style short, 

 subulate ; stigma simple : drupes ovate-oblong, fleshy, edible, 1 in. long, 2-locular, filled 

 with a lactescent, glutinous pulp, each cell containing one plano-convex seed. 



Prom these descriptions, LacmelUa is shown to differ from Ambellania in its more 

 membranaceous corolla, with lanceolate segments revolute at the apex, in its much 

 longer anthers, the filaments inserted in a pilose ring near the base of the tube, a conical 

 10-costate style, a much smaller fruit, of thinner consistence, with a single plano-convex 

 seed in each cell, clothed in a mucilaginous envelope. Although it approaches Zschokkea 

 in its fruit, it differs in its corolla with much longer and lanceolate segments and a 

 shorter tube. 



Zschokkea. 



A valid genus, established by Miiller in 1860 upon several species from Brazil and 

 Guiana, besides another from the Upper Amazonas river. It has been united with 

 LacmelUa by the authors of the Gen. Plant, (ii. 694) ; but it appears to me it should be 

 kept distinct, as it differs from that genus in the extremely short rounded segments of the 

 corolla, in its very long slender anthers bidentate at their base and enclosed within the 

 upper part of the tube of the corolla, in its simple style, in the densely barbate stig- 

 mata, in its smaller, dry, capsular fruit, and contains a single plano-convex dry seed, 

 in which respect it approaches Mauwolfia. 



The following are its known species : — 



1. Zschokkea gracilis, Miill. I. c. p. 21, tat. 6. fig. 1. River Amazonas, near Barra do Rio Negro 



(Spruce 1000). 



2. RAMosissiMA, Miill. I. c. p. 21, tab. 7. River Uhaupes (Spruce 2628). 



3. ARBOREscENS, Miill. /. c. p. 22, tab. 6. fig. 3. Rio Negro (Spruce 1001-1922). 



4. MONosPERMA, Miill. I. c. p. 32, tab. 6. fig. 2. Santarem (Spruce 679). 



5. MiCRooARPA, Miill. I. c. p. 23. Rio Negro (Spruce 3537). 



6. FLORiBUNDA, Miill. I. c. p. 23 : Hancornia floribunda, Popp. Gen. iii. 70, tab. 279. River Amazonas, 



near Ega (Poppig, 2723) . 



7. GuiANENsis, Miill. Linn. xxx. 391. French G-uiana (Poiteau). 



CUPIRANA. 



This genus is the Coupoui of Aublet, who figured the plant and unripe fruit only, 

 which is represented as if crowned with a superior calyx — a mistake originating in the 

 inversion of the detached drupe : hence the genus has been referred by most botanists to 

 the Myrtacece, De Candolle placing it among the doubtful members of that family. 

 Endlicher and Lindley ranged it among the Barringtonieee, while Hooker and 

 Bentham referred it to Fentagonia among ItMUacece. Its true place, however, is un- 

 questionably in Apocynacecs, as I have ascertained by flowering specimens of the same 



