180 ON SOUTH-AMEEICAN APOCTNACE^. 



18. Angadenia elliptica, nob. In Brasilia : v. s. in herb. Mus. Brit. Paranagua (Gardner 2663) . 



A climbing species, with slender, striate, glabrous branchlets, with axils 1-2 in. 

 apart ; leaves ovate-oblong, rounded at the base, suddenly and shortly acute at the sum- 

 mit, submembranaceous, rufescent and shining above, with a pale slender midrib and 

 nerves, palish green and opake beneath, obsoletely puberulous, with prominulent mid- 

 rib and nerves, 2f in. long, 1 j in. broad, on very slender petioles 4 lines long ; raceme 

 lateral, not more than 1 ia. long, bearing about 5 flowers ; sepals oblong, subobtuse, 

 with pellucid margins ; tube of corolla 5 lines long ; segments oblong, 3 lines long ; 

 anthers acuminate, bifurcate at the base ; disk urceolate, striate, denticulate on the 

 margin. 



19. Angadenia Bertekii, nob. : Echites Berterii, A. DC. I. c. p. 447 ; Schlecht. in Linn. xxvi. p. 665 : 



BJiabdadenia Berterii, Miill. in Linn. xxx. p. 435. In insula San Domingo : non vidi. 



A climbing plant, with retrorsely hispidulous branches ; leaves approximate, elliptic- 

 obovate, subacute at both ends, mucronulate, coriaceous, glaTsrous, 1^2 in. long, 10-12 

 lines broad, on petioles scarcely 2 lines long ; raceme terminal, many-flowered, glabrous ; 

 pedicels 5-6 lines long, with bracts 1 line long ; sepals narrow, acutely lanceolate, 

 2^ lines long, each with 2 small inner scales ; corolla yellowish, 1^ in. long ; tube nar- 

 row below for the length of 4 lines, dilated above, pilose within the mouth ; stamens 

 inserted in the contraction of the tube, on a pilose ring ; anthers biaristate ; disk 

 tubular, narrowed and crenate in the mouth, near 1 line long ; style simple ; clavuncle 

 incrassate, 5-grooved, dilated at the base ; stigmata small, slender. 



This plant appears to conform to Angadenia, on account of the shape of the disk and 

 other characters ; it appears to have little affinity with Rhabdadenia. 



20. Angadenia Lindeniana, nob. : Rhabdadenia Lindeniana, inclus. var. angustifolia, MiiU. I. c. p. 438. 

 In Cuba : v. s. in herb, meo (Linden 1699. No. 1700 et 1823 mihi invisa). 



A very slender climbing species, with axils 1-3 in. apart, and bearing two minute 

 stipules on each face ; the leaves are elliptic-oblong, roundish at the base, constricted at 

 the summit into an acute subrecurving acumen, darkish opake green above, with revo- 

 lute margins, sulcate along the midrib, nerves immersed, ferruginously opake beneath, 

 with prominent midrib and prominulent fine nerves, 1-lJ in. long, 4-7 Lines broad, on 

 scabridulous petioles 1-1 J line long ; panicle lateral, glabrous, on a bare, slender deflected 

 peduncle 12-16 lines long, divided at its apex into 2 floriferous branches of nearly the 

 same length, bearing each about 7 alternate flowers, on pedicels 3-5 lines long, with a 

 small setaceous bract ; sepals acutely lanceolate, with membranaceous margins ; tube of 

 corolla narrow at the base for one third of its length, swelling above, glabrous ; segments 

 dolabriform, simply folded dextrorsely in aestivation, expanding horizontally; stamens 

 seated at the contraction of the tube ; anthers cohering, dorsally hispidulous, acuminate, 

 biaristate at the base ; disk cylindrical, margin 5-crenate, concealing the 2 ovaries ; 

 style slender ; clavuncle incrassate, 5-grooved, with a dilated basal membrane ; stig- 

 mata short, terminal. 



In Linden's No. 1700 and 1823 (which I have not seen) the leaves are somewhat larger, 

 but all the characters are essentially the same. 



