ON SOUTH-AMEEICAN APOCYNACE^. 247 



immersed nerves, arcuately conjoined, paler, opake, and ferruginous beneath, puberulous, 

 3 in., long including the linear acumen (4 lines long, 1 line broad), 1^ in. broad, on 

 channelled petioles 3 lines long; panicles axiUary and terminal, 3 in. long, laxly 

 branched, branches subdivergent, 4-6 lines apart, 12 liaes long, bare at the base, agaia 

 divided and bearing numerous very small flowers on bracteolate pedicels J line long, 

 all shortly puberulous ; sepals acute, f line long ; corolla 2 lines long ; tube extremely 

 short ; segments oblong, three times as long as the tube ; stamens exserted. 



12. PoasTERONiA THYRsoiDEA, Miill. I. c. p. 105 : Echites thyrsoidea, Veil. Fl. Flum. p. Ill, Icon. iii. 

 tab. 37. In Brasilia, prov. Rio Janeiro, ad Santa Cruz : non vidi. 



A scandent species, with stoutish hirsute branches 4 lines thick, with axils 4|^ in. 

 apart, whence issue more slender branchlets divaricating nearly at a right angle, 9 in. 

 long, hirtous, lenticellate, the axils 2 in. apart ; the leaves on the branchlets (sometimes 

 not quite opposite) are elliptic, rounded or roundish at the base, constricted near the 

 apex into a subobtuse acumen, with about 12 pairs of very fine diverging nerves and 

 many transverse reticulated veins, hirsutulous beneath, 3-3^ in. long, 1|— If in. broad, 

 on slender pubescent petioles 1^2 lines long ; inflorescence terminal, on a peduncle 

 ^ in. long, supporting a pyramidal floral mass 2 in. long, 10 lines broad at the lower 

 part, gradually pointed upwards, consisting of a number of densely approximate 

 branchlets crowded with many very small yellowish flowers, each mostly concealed by 

 its own small lanceolate bract ; flowers scarcely more than 2 lines long ; pedicels very 

 short ; sepals acutely lanceolate ; tube of corolla extremely short ; its segments 2 lines 

 long, subacute ; stamens quite exserted : subsequently the floral peduncle becomes 

 elongated and thickened, producing 3 long pedicels 6 lines apart, each supporting 2 

 elongated pendent follicles 9^ in. long, having about 6 narrow strangulations, the 

 intervals being fusiformly oblong, seminigerous, 2 Hues broad, dehiscing in the usual 

 manner ; seeds conically oblong, subpilose, 5 lines long, 1^ line broad, with a spreading 

 coma 8 lines long. 



A species near F. montana. 



13. FoRSTERONiA DiVARiCATA, nob. : ramis validiusculis, pallida brunneis, verruculoso - lenticellatis, 

 remote divaricatim opposite ramosis, ramis tenuioribus incurvatis, iterum breviter ramulosis, 

 ramulis tertiariis brevibus, foliatis et floriferis : foliis ellipticis, in paribus tribus, imo subrotundatis, 

 apice breviter acutis, chartaceis, supra fusco-viridibus, opacis, scabridulis, ad nervos sulcatis, nervis 

 utrinque 6, divergenti-adscendentibus, immersis, subtus palUdioribus, opacis, costa nervisque fulvis 

 prominentibus, patentim hirtulis, breviter petiolatis : paniculis in ramis tertiariis terminalibus, 

 a basi trichotomis, ramis adscendenti-divaricatis, curvatis, imo nudis, superne ramulosis et crebriter 

 plurifloris ; floribus congestis, hirsutulis, pedicellatis ; sepalis parvis, acutis ; corolla Mspidula, tubo 

 brevissimo. In Brasilia, prov. Rio de Janeiro : v. s. in herb. Mus. Brit, ex I. a. (Bowie and Cunning- 

 ham, n. 72). 



This plant has many of the characters of the Echites thyrsoidea of Velloz, the pre- 

 ceding species, but is more glabrous and its inflorescence more diffuse, and has smaller 

 leaves. The main branch is 1 line thick, with axils 2\ in. apart ; the primary branchlets 

 issue from these axils nearly at a right angle, curving upwards, being 3 in. long, all 



