106 ON SOUTH-AMEEICAN APOCTNACE^. 



alternate flowers, on pedicels 1-1 J Hne long, minutely bracteolated ; sepals subacute, 

 membranaceous, glabrous, ^ line. long, eacb with 3 minute inner scales; corolla 2 lines 

 long, dark red, glabrous ; tube f line long ; segments 1 J line long, equilateral, glabrous 

 outside, pubescent inside on the median nerve, with a slight dextrorse convolution; 

 stamens exserted ; disk of 5 free, broadly ovate lobes, as long as the 2 conical ovaries, 

 hairy at the summit. 



31. Thyksanthus Luschnatu, nob. : Forsteronia Lmchnatii, Mvill. I. c. p. 98. In Brasilia, prov. Rio 

 de Janeiro : non vidi. 



A species near the preceding, with cinereous glabrous branches ; leaves ternate, ovate, 

 subacute at the base, shortly acuminate, rigidly membranaceous, cinereo-fuscous, with 

 slender, scarcely prominulent nerves, 2|-2| in. long, Ij-lf in. broad, on petioles 

 3-4 lines long ; inflorescence as in the preceding species, obsoletely pubescent. 



32. Thyksanthus meridionalis, nob. : Forsteronia meridionalis, Miill. I. c. p. 98. In Erasilia, prov. 



Rio Grande do Siil ad S. Joao Baptista (SeUow) : non vidi. 



A species approaching the two preceding, with obsoletely tomentellous branches; 

 leaves ternate, ovate-lanceolate, cordate at the base, with a long acute acumen, sub- 

 membranaceous, blackish green above, dark olive green beneath, minutely pubescent 

 and scabridulous, 2^2J in. long, 6-8|- lines broad, on petioles 2 J lines long; in- 

 florescence as in the preceding species, with innumerable, minute flowers. 



33. Thyksanthus embelioides, A. DC. I. c. p. 387; Deless. Icon. v. 21, tab. 48 : Forsteronia embelioides, 



MiiU. I. c. p. 97, tab. 50. fig. 2. In Brasilia, prov. Minas Geraes : v. s. in herb, nieo et alior. Catas 

 Altas (Gardner 5014). 



A species differing from T. Luschnatu in its smaller and paler leaves, which exactly 

 resemble those of T. difformis. Its branches are very slender, glabrous, and rufescent, 

 with axils 1-1 J in. apart; leaves ternate, ovate-oblong, acute at the base, obtuse or 

 suddenly constricted at the apex into a short acumen, membranaceous, glabrous, of a 

 palish green above, sulcate along the midrib, immersed pellucid nerves, with a longi- 

 tudinal granular gland hidden in hairs within the basal plicature, paler, yellowish and 

 opake beneath, with subprominent midrib, and reddish fine pellucid nerves and reticu- 

 lated veins, 1-2J in. long, 7-9 lines broad, on slender petioles 3-5 lines long ; panicle 

 terminal, laxly branched, as in T. myrianthm, 3 in. long, 2 in. broad, bearing innumer- 

 able very small flowers, on pedicels 1-1 J line long ; sepals membranaceous, | line long ; 

 coroUa of a reddish hue, pruinose, membranaceous ; tube ^ line long ; segments roundish, 

 1^ line long ; rest as in the generic character. 



34. Thyksanthus pilosus, A. DC. I. c. p. 387 : Echites pilosa, Veil. Fl. Flum. p. 112 • Icon. iii. 

 tab. 38 : Forsteronia pilosa, Miill. /. c. p. 99. In Brasilia, prov. Rio de Janeiro : non vidi. 



A species near T. myrianthm, with stoutish branches, shortly dichotomous at the apex, 

 with axils 1-1^ in. apart ; leaves ternate, lanceolate-oblong, narrower and obtuse at the 



