176 ON SOUTH-AMEEICAN APOCtNACILS. 



lines long, narrow below for one third of its length ; segments dolabriform, 4^ lines long ; 

 stamens seated on a pilose ring at the constriction of the tube ; anthers slender, linear, 

 acute, with 2 short, subdivergent, basal prongs ; disk urceolate, fleshy, denticulate on the 

 margin, and nearly concealing the 2 free ovaries. 



7. Angadenia latifolia, nob. : Anisolobus Amazonicus,va.r. latifolius, Mull. I. c. p. 114 : Odontadenia, sp. 



Bentli. MSS. In Brasilia, v. s. in herb, meo, Parnire, Rio Uahupes (Spruce 2503). 



A species very distinct from the preceding. Its branches are compressed, opake, sub- 

 striate, dilated at the axils, which are 1^ in. apart, and thickened by a transverse ridge, 

 bearing 2 or more acute stipules, often caducous ; leaves very broadly ovate, rounded, but 

 shortly and very suddenly acute upon the petiole, roundish towards the summit and 

 suddenly constricted into an obtusely cuspidate acumen, rigidly chartaceous, with sub- 

 undulated margins, opakely fuscous above, with curving immersed nerves, and transverse 

 veins very finely reticulated between them, paler and ferruginously opake beneath, with 

 prominent reddish nerves and veins, 4-4J in. long, 2J-3 in. broad, on curving, stoutish, 

 channelled petioles 5-6 lines long ; terminal or subaxillary panicles on peduncles 5-8 lines 

 long, each bearing about 10 flowers on slender pedicels 9 lines long ; sepals ovate, sub- 

 acute, unequal, very imbricate, 2 lines long ; tube of corolla sabpuberulous, narrowed 

 below for half its length, slightly swelling above, 7 lines long ; segments obliquely ovate, 

 2^ lines long ; disk cupular, cleft halfway into 5 subacute lobes shorter than the 2 ovaries. 



The species differs from A. Amazonica in its much broader, less acuminate, more rigid 

 leaves, and in its geminate terminal panicles bearing fewer flowers. 



8. Angadenia Sprucei, nob. : Anisolobus Sprucei, Miill. I. c. p. 114 : Odontadenia, sp., Benth. MSS. 



In Amazonas : v. s. in herb, meo prope Panure, Rio Uahupes (Spruce 2555) . 



A species near the two preceding, with stout straight branches, having their axils 2|-3^ 

 in. apart, bearing on each face 2-4 lanceolate membranaceous stipules 1 line long, very 

 caducous ; leaves oblong-elliptic, gradually narrowing towards the base from the middle, 

 suddenly contracted at the more rounded summit into a sublinear obtuse acumen, char- 

 taceous, with subrevolute margins, reddish fuscous and opake above, with black midrib 

 and immersed nerves, ochreous-brown below, midrib and nerves reddish, subprominiilent, 

 with closely transverse reticulate veins, 4-5 in. long, 1^-2 in. broad, on petioles 3-4 

 lines long ; panicles axillary, single or geminate and terminal, on peduncles 9-15 lines 

 long, trichotomously branched, each branch bearing 2-3 alternate flowers, on pedicels 

 4-6 lines long, furnished with 2 smali bracts ; sepals broadly ovate, very imbricate, 

 ciliate on the margins, 2 lines long ; tube of corolla 10 lines long, the contracted basal 

 portion of the tube being 3 lines long ; segments broadly oblong, 4< lines long ; stamens 

 inserted at the contraction of the tube ; disk urceolar, with many denticulate teeth on 

 the margin, half the length of 2 conical oblong ovaries. 



A drawing of this species, and an analysis of its flower, are given in Plate XXVII. A. 



9. Angadenia cognata, nob. : Anisolobus cognatus, ]\Iiill. /. c. p. 113 : Echites cognata, Stadelm. Bot. 



Zeit. 1841, p. 79 ; A. DC. /. c. p. 470. In Brasilia, Rio Japure : non vidi. 



A species with glabrous branchlets ; leaves ovate or oblong-ovate, subacute at the base. 



