ON S0UTH-AMEEICAN APOCTNACELE. 31 



Tribe TABEEN^MONTANE^. 



This tribe is here restricted within more precise Kmits than those employed by 

 De Candolle. Its chief character resides in its 2 broad spreading follicles dehiscing along 

 the ventral suture, which is bent inwards and placentiferous on both margins ; the seeds 

 all present similar characters to those explained under JPeschiera, being half-immersed 

 in a soft fleshy substance shown to be a funicle — a fact of great importance, a struc- 

 ture, as far as we yet know, peculiar to this tribe. Its numerous species are in- 

 coherently classified by Miiller, being confounded by him in the single genus Taber- 

 ncemontcma, and placed in his tribe PltimeriecB. The following clavis shows the dif'^ 

 ferential features of the genera into which the South- American and Mexican species are 

 here divided. 



A. Estivation of corolla sinistrorse : leaves opposite. 



a. Disk, none. 



1. Tube of corolla very slender, cylindrical, swollen at the base, and there 



staminigerous, segments shorter than the tube, and simply contorted; 



follicles subovoid and muricated Peschiera. 



b. Disk cylindrical, often short, wholly adnate to the lower portions of the ovaries. 



2. Tube of corolla cylindrical, swollen below the contracted mouth, and there 



staminigerous, segments long and narrow with a peculiar introflexed sesti- 

 vation, and descending into the mouth of the tube ; follicles oblong, gibbously 

 curved, smooth Bonafousia. 



3. Tube of corolla slender, cyUndrical, a little swollen in the mouth, segments 



dolabriform simply convoluted; stamens slender, of a bluish tinge, always 



more or less exserted in the apex ; foUicles smooth, arcuated TaberntBmontana. 



4. Tube of corolla stouter, cylindrical, swollen in the middle and there stamini- 



gprous ; aaithers subcoherent iu a cone ; folhcles oblong, arcuate, smooth . Taberna. 



5. Calyx long, tubular, with a 5-toothed margin; tube of corolla stoutish, 



cylindrical, constricted in the middle and there staminigerous; anthers 

 slender, free; disk half length of ovaries, with a denticulated margin; 

 follicles ovate, apiculated, smooth Codonemma. 



c. Disk cupshaped, half length of ovaries. 



6. Tube of corolla cylindrical, stoutish, fleshy, constricted in the middle, above 



which it is staminigerous ; anthers free, slender ; follicles ovate and muri- 

 cated as in Peschiera Phrissocarpus. 



d. Disk cylindrical, truncated, fleshy, whoUy or partially concealing the ovaries. 

 7., Tube of corolla gradually swelling from below the mouth, segments oblong, 



obtuse, nearly as long as the tube, inflected at J of their height, and 

 descending within the mouth of the tube ; follicles gibbously oblong, com- 

 pressed, smooth Anacampta. 



8. Tube ©f corolla short, suddenly and shortly swollen at the base, segments 



