ON SOUTH-AMEEICAN APOCYNACELE. 257 



inner broad, roundish, denticulate scale, puberulous outside, 3 lines long, 1^ line broad ; 

 tube of eoroUa cylindrical, pale yellow, glabrous, 8 lines long, with a thin annular ring 

 in the mouth, and beneath it 5 linear appendages half-exserted ; segments rhomboidally 

 inequilateral, acute at the sinister angle, 3 lines long, 2 lines broad, dextrorsely convo- 

 lute ; stamens seated on a pilose ring a little above the middle of the tube ; filaments 

 compressed, ciliate, reaching the mouth ; anthers linear-oblong, acuminate, partially 

 cohering and wholly exserted, 2 lines long, each with 2 subdivaricating basal prongs ; 

 disk of 5 free, oblong, obtuse, erect lobes, as long as the 2 acutely oblong ovaries ; 

 follicles, according to Velloz, 2, free, slender, torulose, slightly arcuate, 5-10 in. long, 

 2 lines broad at the distentions, glabrous ; seeds 6 lines long, 1 J line broad, with an 

 apical coma 9 lines long. 



Velloz says the plant is called Cipo carneiro (fleshy climber) on account of the thick 

 fleshy rugose stem, which is also lactescent ; he found it at Santa Cruz, in the province 

 of Rio de Janeiro. 



6. HjEmadictyon bracteosum, Miill. PI. Bras. xxvi. p. 168. Prope Rio de Janeiro (Riedel) : v. v. et 



sice, in herb, meo (no. 3270), ad Morro Flamengo. 



This is a slender twining species, with densely hirtellous branches, near 1 line thick, 

 its axils 4-5 in. apart ; leaves oblong-ovate, roundish at the base, where they are often 

 subplicate, suddenly constricted at the apex into an acumen, thinly chartaceous, with 

 subundulate margins, of a dark-oUve hue, with 5-6 pairs of divergent, arcuately conjoined 

 nerves and laxly reticulate veins, paler and subferruginous-opake beneath, the nerves 

 prominulent, 3f-4f in. long, 1^2J in. broad, on petioles 5-7 lines long ; racemes solitary 

 at the nodes, 21-3^ in. long, shortly hirtellous, densely flowered on a peduncle bare at its 

 base for the length of near 1 in., bearing above 10-20 flowers on very slender approximate 

 pedicels 9 lines long, supported by a very membranaceous spathulately linear-acuminate 

 bract 6 lines long, 1 line broad ; sepals oblong-ovate, acute, submembranaceous, reticu- 

 lately veined, subpuberulous, each with an inner deltoid 4-denticulate scale ; corolla 

 glabrous ; tube broadly cylindrical, 9 lines long, with a crenulate annular ring in its 

 mouth, and below it 5 linear semi-exserted appendages ; segments rhomboidally inequi- 

 lateral, expanding, 5 lines long, 3 lines broad ; the usual stamens, inserted in the middle 

 of the tube, nearly reaching the mouth ; disk of 5 lobes, scarcely longer than the 2 

 glabrous ovaries. 



7. H^MADicTYON DENTicuLATUM^ nob. : EcUtes denticulaia, Yell. Fl. Flum. p. 110, Icon. iii. tab. 30; 



A. DC. I. c. p. 455 : Hcemadictyon macronmrwm (in parte), Miill. I. c. p. 169. Prov. Rio de Janeiro 

 (Velloz) in sylvis maritirais : v. s. in herb. Mus. Brit. Itagoahy (Bowie & Cunningham) . 



A climbing glabrous species, well represented by Velloz, and very distinct from H. 

 macroneurum, Miill. Its branches are flexuose, striate, pale, glabrous, with axils 4-4^ in. 

 apart ; leaves elliptic-oblong, acute at the base, suddenly constricted towards the summit 

 into a very narrow acute acumen, dark green above, opake, somewhat translucent, with 

 dark red midrib, nerves and very reticulate veins, obsoletely puberulous, yellowish and 

 opake beneath, 3-4 in. long, 1^-2 in. broad, on subpubescent channelled petioles 3 lines 

 long ; raceme solitary and lateral at the nodes, 3^ in. long, on a slender peduncle bare 



2l 



