1	"Upper leaf surface shiny, flowers 8-12 cm long, calyx >20 mm long, corolla tube not ridged, fruit 5.5-10 cm long"	"P. fortunei"
1	"	Upper leaf surface not shiny, flowers <10 cm long, calyx <25 mm, corolla tube ridged, fruit &lt; 5.5 cm long"	2
2	"Lower surface of mature leaves with unbranched glandular hairs; leaves sticky to touch; flowers <5 cm long"	"P. kawakamii"
2	"	Lower surface of mature leaves covered with branched (stellate) hairs; leaves not sticky to touch (note immature and early spring leaves may be sticky); flowers >5 cm long"	3
3	"Stellate hairs on lower surface of mature leaves distinctly stalked"	4
3	"	Stellate hairs on underside of leaves either sessile or shortly stalked"	5
4	"Inflorescence cylindrical with a few long branches near the base, upper flower clusters sessile or occasionally very shortly pedunculate"	"P. fargesii"
4	"	Inflorescence pyramidal with short branches, upper flower clusters clearly pedunculate"	"P. tomentosa"
5	"Flowers <8 cm long, capsules ellipsoid, leaves ca 2x as long as wide"	"P. catalpifolia"
5	"    	Flowers 8-10 cm long, capsules ovoid, length of leaves <1.5 x width"	"P. elongata"