LXXI. GESNERACEJE 
367 
rarely with a much smaller one opposite to it, hairy, sessile, 
broadly ovate, 1—2^ in. across, cordate, toothed. Scape 1—2 in., 
rising from the base of the leaf, bearing a small, terminal cyme of 
1-4 dark blue flowers. Calyx-lobes acute. Corolla-tube very 
short ; limb flat, \ in. across, lobes 4, oblong, rounded, one lobe 
Fig. 116. Platystemma violoides. 
notched, the others entire. Stamens 4 ; filaments very short, 
curved; anthers 1 -celled. Ovary ovoid; stigma truncate. (Fig. 
116.) 
Simla, the Glen, on wet rocks ; July, August. — Simla to Nepal, 6000- 
9000 ft. 
LXXII. BIGNONIACE.E 
Trees or perennial herbs. Leaves opposite or alternate, odd- 
pinnate. Flowers showy, nearly regular, 2-sexual, in terminal 
racemes. Calyx free, bell-shaped, persistent. Corolla hypognous, 
bell-shaped or funnel-shaped ; limb spreading, lobes 5, nearly 
equal, toothed or entire. Stamens 5 or 4, attached to the corolla- 
tube, alternate with the lobes ; filaments thickened and hairy near 
the base ; anthers 2-celled. Disk conspicuous, fleshy, encircling 
the base of the ovary. Ovary free, 2-celled ; style long, simple ; 
stigma terminal, flattened, 2-lobed ; ovules numerous in each cell. 
Capsule long, narrow, flat or terete, opening by 2 valves ; seeds 
numerous, large, flattened, surrounded by a membranous, nearly 
transparent wing, entire or divided into linear segments. — Widely 
