QN SOUTH- AMEEICAN.APOCTNACEJE. 127 



ing to a diameter of more than 2 in. ; stamens inserted in a pilose ring in the constric- 

 tion of the tube ; anthers 4 lines long, connivent, pilose with long white hairs behind 

 and on the margins ; disk of 5 subconnate lobes denticulate at the apex, longer than 

 the 2 enclosed ovaries ; styles free near their base, connate above ; follicles 5 in. long, 

 H ill- broad, tapering towards the summit; seeds, upwards of 100, linear oblong, 

 Ij in. long in an unripe state. 



2. Odontadenia grandiflora, nob.: Odontadenia speciosa, Miill. (in parte) Z. c. p. 117: Hcemadictyon 



grandiflorum, A. UC. (non Griseb.) I. c. p. 426 : Echites grandiflora, Mey. Esseq. p. 131 : Echites 

 insignis, Spr. Syst. i. 632 : Echites Meyeriana, E,. & Sch. : Echites macrantha, R. & Sch. Syst. iv. 

 793. In Guiana, Para et Panama : v. pi. s. et fruct. in herb, Mus. Brit. Panama (Hayes, in flore), 

 ins. Mechiana, Para (J. G. Smith, //-mc^ solus). 



A climbing species, with terete, smooth branches, having axils l|^-2 in. apart ; oppo- 

 site leaves, broadly obovate, shortly narrowing at the base, obtuse at the apex, very 

 glabrous, entire, with prominent nerves, and handsomely reticulated veins, 6 in. long, 

 4-5 in. broad, on petioles 11 lines long ; panicle axillary, branched, shorter than the 

 leaves, many-flowered, pedicels spreading, 3-bracteolate at the base, each supporting a 

 single large flower; sepals roundly ovate, imbricated, 2 exterior somewhat larger; 

 corolla 3 in. long, yellowish red ; tube cylindrical, shortly swollen at the base below the 

 constriction, and there obsoletely pentagonous, campanular above; segments obtusely 

 oblong, spreading ; stamens seated at the contraction of the tube, filaments very short, 

 channelled ; anthers linear lanceolate, connivent, sagittately 2-lobed at the base, glabrous 

 behind, with a small tuft of hairs in the front, at the insertion of the filament ; disk of 

 5 compressed dentate lobes, confluent at the base, enclosing 2 ovate ovaries; style 

 shortish, bipartite at the base ; clavuncle oblong, pentagonous, with a peltate membrane at 

 the base ; stigmata 2, short and distinct ; follicle (I saw only a loose one) 6 in. long, 1| in. 

 broad, opening by a ventral suture ; pericarp thickish, coriaceous ; placentas 2, distinct, 

 submembranaceous, 6 lines broad, studded closely with cicatrices, denoting the points of 

 attachment of the seeds ; seeds very numerous, linearly terete, subincurved, erect, with a 

 basal hiliun, 2^-3 in. long, 2 J lines thick, obtusely pointed at the apex ; testa rugulous, sub- 

 coriaceous, formed of fine transverse crystalline cells, showing on one side along its entire 

 length, a narrow raphe containing many white spiral threads ; inner integument thin 

 and membranaceous, covering a thin pergameneous albumen 2 J in. long ; the embryo 

 If in. long, has 2 flat linear cotyledons 18 hues long, 1 line broad, with a basal slender 

 terete radicle 3 lines long. 



This species, confounded with the preceding, is readily distinguished from it by 

 having leaves twice as broad, obtuse (not acuminate) at the summit, by its petioles of 

 twice the length, by its much larger corolla, and other particulars. 



A drawing of it, and an analysis of its flower, fruit, and seeds, are given in Plate XVI., 

 where the seeds in figs. 10 and 11 are thicker than they ought to be ; in fig, 9 this is 

 better shown. 



3. Odontadenia Formosa, nob. : Odentadenia grandiflora, Miq. (non Mey.) Stirp. Snrin. Sel. p. 166 ; 



Walp. Ann. iii. 35 : ramulis pallidis, opacis, striolatis ; foliis elliptico-oblongis, imo a medio cunea- 



