ON SOUTH-AJiIEEIOAN APOOYNACEiE. 79 



2. Mekizabenia arcuata, nob. : TaberntBrnontana arcuata, -R. & P, I. c. p. 22, tab. 143 ; A. DC. /. c. 



p. 363. In Peruvia : non vidi, 



A tree more than 60 feet high, with a spreading head ; branchlets stoutish, dichoto- 

 mous, pallid, subcompressed, with axils 1 in. apart ; leaves oblong or lanceolate oblong, 

 pointed at both ends, flat, patent, ^with prominulent diverging nerves, 6-6 in, long, 

 l|-2 in. broad, on petioles 3-4 lines long, fossulate at the base, and conjoined by a 

 short transverse ridge ; panicles 1 J in. long, branching from the base ; peduncles slender, 

 4 lines long, branched, alternately bracteolated, each bearing about 3 alternate flowers ; 

 on slender pedicels 3 lines long, furnished with a small acutely ovate bracteole ; sepals 

 acutely oblong, 1 line long ; corolla pale yellow ; tube cylindrical, 6 lines long ; segments 

 spathulate-oblong, 5 lines long, 3 lines broad, deflexed ; stamens inserted a little below 

 the base of the tube ; disk of 5 small free glands ; ovaries 2, free to the base, pointed ; 

 follicles large, divaricated, oblong, roundish, with an obtuse, reflexed apex, 2f in. long, 

 1;| in. broad, containing many obovate seeds 4 lines long, dorsally costate, reddish, half- 

 imbedded in. scarlet fleshy funicles. 



3. Merizadenia amplifolia, nob. : TaberncBmontana macrophylla, Poir. Diet. Suppl. v. p. 276 (non 



Miill.) ; A. DC. Prodr. viii. 374. In Guiana: v. s. in herb. Mm. Brit. Cayenne (Martin), Guiana 

 (PoUard 10, sub T. oblongifolia) , Surinam (Hostmann) . 



A species near M. arcuata. Branches compressed, striolated, fistulous, with dilated 

 axUs 2 or more inches apart; leaves elongate-oblong, acute at the base, broadish 

 above, suddenly constricted near the summit into a somewhat narrow acumen, un- 

 dulate and subrevolute at the margins, thinly chartaceous, glabrous, pale green above, 

 granularly rugous, sulcate at the patently divaricate nerves, paler beneath, with 

 prominent midrib and 12 pairs of prominent nerves, 6-9 in. long, 2|-3^ in. broad, on 

 rather slender channelled petioles deeply fossulate at the base and conjoined across 

 the nodes, 3-5 lines long; panicles axillary; peduncles thick, angular, short, alter- 

 nately 3-branched, each branch bearing several approximated pedicellated flowers, 

 often geminate or subumbellate, its close prominent joints having a short caducous 

 bractlet ; pedicels 6 lines long ; sepals ovate, obtuse, submembranaceous, 2 lines long ; 

 tube of corolla cylindrical, 9 hues long; segments unequally oblong, obtuse, 7 Hues 

 long, and quite deflexed, sinistrorsely convolute in aestivation, as in M. Sananho. 



A drawing of this species, and an analysis of its flower, fruit, and seeds, are shown in 

 Plate XI. A. 



Anartia *. 



The plants of this small group much resemble in appearance many of the species of 

 Peschiera in having unequal pairs of leaves, and a depauperated inflorescence with a 

 salver-shaped corolla ; but they differ notably in the longer and more linear form of its 

 segments, inflected downwards, as in Bonafousia, and convolute dextrorsely (not sinis- 



* From avdpTios (imperfectus), because of its unequal leaves and impoverished inflorescence. 



