1	"Leaf-blades pubescent, hirsute or tomentose at least on the lower (abaxial) surface; calyx distinctly pubescent outside"	2
1	"Leaf-blades glabrous, sometimes sparsely puberulous on abaxial veins; calyx glabrous, sometimes sparsely puberulous outside"	9
2	"Leaves distinctly petiolate, petioles 10-200 mm long; corolla-tube glabrous inside or with a few sparse gland-tipped hairs on the inner upper-half"	3
2	"Leaves sessile or with minute petioles of 1-3 mm long; corolla-tube villous inside without gland-tipped hairs"	8
3	"Inflorescence not exceeding the upper leaves; flowers small, up to 10 mm long; calyx-and corollaubes with sparse gland-tipped hairs inside; filaments 8-12 mm long; style 10-18 mm long"	"Clerodendrum tracyanum"
3	"Inflorescence exceeding the upper leaves; flowers larger, 18-70 mm long; calyx-and corolla-tubes glabrous and without gland-tipped hairs inside; filaments (15-) 20-40 mm long; style 30-100 mm long"	4
4	"Flowers in lax pubescent-puberulous thyrse; corolla glabrous or puberulous only outside the lobes, tube 25-70 mm long; style 60-100 mm long"	5
4	"Flowers in dense tomentose thyrse; corolla pubescent outside, tube 18-25 (-27) mm long; style 30-43 mm long 8. C. tomentosum"	6
5	"Leaf-blades glabrous above, ovate or broadly elliptic-ovate; corolla glabrous, tube non-glandular, 45-70 mm long"	"Clerodendrum costatum"
5	"Leaf-blades puberulous above, oblong or narrowly elliptic-oblong; corolla puberulous outside the lobes, tube sparsely glandular outside, 25-40 mm long"	"Clerodendrum grayi"
6	"Leaf-blade broadly ovate, with almost rounded base, densely velvety-tomentose all over, corolla-tube always villous-tomentose outside"	"Clerodendrum tomentosum var. mollissima"
6	"Leaf-blades elliptic, elliptic-oblong or lanceolate, with a cuneate-attenuate base, tomentose or pubescentglabrescent above; corolla-tube villous-tomentose or almost glabrous outside"	7
7	"Leaf-blades elliptic, elliptic-oblong or broadly lanceolate, pubescent-glabrescent above; corollatube sparsely villous-pubescent or almost glabrous outside; calyx glandular and puberulous inside"	"Clerodendrum tomentosum var. tomentosum"
7	"Leaf-blades narrow-lanceolate, pubescent-tomentose all over; corolla-tube usually densely vinoustomentose outside; calyx glandular and pubescent-tomentose inside"	"Clerodendrum tomentosum var. lanceolatum"
8	"Prostrate, decumbent or sub-erect herb or subshrub; leaves variable, cordate, rhomboid-orbicular, ovate-elliptic, oblong or linear-lanceolate, (5-) 10-30 (-40) mm wide; corolla-tube (8-) 12-18 (-25) mm long; stamens and style white; endemic to NNW Northern Territory"	"Clerodendrum tatei"
8	"Erect shrub or subshrub; leaves obovate-oblong, elliptic-oblong, oblanceolate to lanceolate, (1.5-) 2-5 (-7) mm wide; corolla-tube 7-10 mm long; stamens and style purple; endemic to Cape York Peninsula, Qld"	"Clerodendrum parvulum"
9	"Calyx truncate or shallowly toothed"	"Clerodendrum inerme"
9	"Calyx 5-toothed or deeply 5-lobed"	10
10	"Calyx 5-toothed, glandular outside; corolla purple, glandular outside, villous inside the tube; corolla tube 10-15 mm long"	"Clerodendrum heterophyllum"
10	"Calyx deeply 5-lobed, non-glandular outside; corolla white, non-glandular, glabrous all over; corolla tube (15-) 20-100 mm long"	11
11	"Corolla-tube 50-100 mm long; filaments 35-50 mm long; style 65-105 mm long; calyx-lobes 5-8 mm long"	"Clerodendrum longiflorum var. glabrum"
11	"Corolla-tube (15-) 20-45 mm long; filaments 9-35 mm long; style 30-60 mm long; calyx-lobes 2-5 mm long"	"Clerodendrum floribundum"