262 ON SOIJTH-AMEEICAN APOCYNACKa:. 



rower below the middle, obtuse or subcordate at the base, subobtuse and mucronate at 

 the apex, chartaceous, glabrous, fuscous green above, somewhat shining, with arcuate 

 nerves and reticulate veins, beneath yellowish-green, 3-4| in. long, f-1 in. broad, on 

 petioles 2-3 lines long; corymbs large, solitary at the nodes, much longer than the 

 leaves, on a peduncle twice or thrice cleft from near its base, hirtellous, bearing many 

 smallish flowers on pedicels 7-16 lines long ; sepals acuminately ovate, recurved at the 

 apex, 2-2^ lines long, each with an inner deltoid crenulate scale; tube of corolla 

 glabrous, cylindrical, broader at the base, constricted in the middle, again widening at 

 its 5-plicate mouth, which bears within 5 small ovate appendages ; segments obliquely 

 obovate, ciHate on the margins, a little shorter than the tube; stamens seated on a 

 pilose ring in the constriction of the tube ; anthers glabrous, If- 23- lines long, their 

 summits exserted. 



19. H^MADiCTYON MACRONEURUM, MuU. Fl. Bras. xxvi. p. 169 (excl. syn. Veil.). In Amazonas, ad Rio 

 Japure (Martins 3029) : non vidi. 



A species very distinct from JEJchites megalagrion of VeUoz, to which Miiller refers it. 

 It has glabrous branches ; leaves elliptic or oblong-ovate, acute at the base, with a short 

 acumen, rigidly subcoriaceous, fuscously palish above, very glabrous, sulcate on the 

 strong midrib and nerves, fuscpus-yeUowish beneath, with stout prominent midrib, 

 nerves, and reticulate veins, 5^ in. long, 3^4 in. broad, on petioles 3j-5|- lines long ; 

 panicle upon a peduncle 1^ in. long, bifid above, and densely flowered on alternate or 

 geminate very approximate pedicels as long as the sepals, with 3 basal bracts of equal 

 length ; sepals oblong-ovate, acutely acuminate, membranaceous, glabrous, 5f lines long, 

 each with an inner ovate truncate denticulate scale; corolla If in. long; its tube 

 1 in. long, broadly cylindrical, reddish, its mouth furnished with an elevated spotted 

 ring ; segments scarlet, puberulous outside ; stamens seated below the mouth on a 

 retrorsely pilose ring; anthers glabrous, shortly exserted, the appendages extending 

 beyond them ; disk urceolate, with 5 short lobes as long as the 2 ovaries. 



20. H^MADiCTYON Amazonicum, Benth. MSS. ; Miill. I. c. p. 166. In Amazonas, Rio Trombetas 



(Spruce 239) : non vidi. 



A climbing species, with slender, pubescent, verruculous, fuscous-red branches, having 

 remote axils ; leaves elliptic-ovate, subobtuse at the base, shortly and acutely acuminate, 

 rigidly membranaceous, fuscous, concolorous, shortly puberulous or glabrescent, with 

 5-6 pairs of nerves and reticulate veins, 4f in. long, 2f in. broad, on petioles 35- lines 

 long; raceme at each node nearly as long as the leaves, on a rather long peduncle, 

 bearing above few flowers on puberulous pedicels, supported by small ovate-lanceolate 

 bracteoles ; sepals ovate-acuminate, 3f lines long, with 4-6 inner subbifid scales ; tube 

 of corolla shortly hirtellous, 6^ lines long, with a plicate callous ring in the mouth, 

 and the usual semi-exserted appendages ; segments obliquely inequilateral, 4 lines long ; 

 anthers slightly exserted ; disk half-cleft into 5 lobes around the 2 hairy ovaries. 



