1	"Plants floating herbs"	"Pistia {Pistia stratiotes}"
1	"Plants terrestrial (including marshy) herbs or shrubby climbers"	2
2	"Spathes leaf-like, not enclosing the laterally placed spadices"	"Acorus {Acorus calamus}"
2	"Spathes not leaflike, partially or almost completely enclosing the spadices"	3
3	"Plants climbing herbs with bisexual flowers"	4
3	"Plants low-growing herbs with unisexual flowers"	5
4	"Plants stout lianas with large, sometimes perforated, leaves; raphides present; stamens 4; spathes large, enclosing the stout, conical spadices"	"Monstera {Monstera deliciosa}"
4	"Plants climbing, with emaller, entire or lobed, sometimes variegated leaves; raphides absent; stamens 6; spathes small, curved, enclosing the small, cylindrical spadices"	"Epipremnum {Epipremnum pinnatum}"
5	"Plants suffrutescent herbs with a thick, ringed, aerial stem topped by a crown of leaves; latex present"	"Dieffenbachia {Dieffenbachia seguine}"
5	"Herbs with underground stems (tubers, rhizomes, or corms); latex absent"	6
6	"Leaves undivided, sometimes peltate"	7
6	"Leaves digitately compound or pedate"	10
7	"Plants rhizomatous; spathe limbs curved, cuspidate"	"Zantedeschia {Zantedeschia aethiopica}"
7	"Plants with undergrounds corms, tubers, or with a rootstock; spathe limbs erect"	8
8	"Leaves not peltate; spadices exserted; staimnate flowers with deflexed, hair-like sterile organs above them"	"Arum {Arum jacquemontii}"
8	"Leaves peltate; spadices includes; flowers not associated with sterile organs"	9
9	"Corms up to 15 cm wide; basal lobes of the leaves obtuse"	"Colocasia {Colocasia esculenta}"
9	"Rootsocks up to 2 m long; basal lobes of leaves acute"	"Alocasia {Alocasia macrorhiza}"
10	"Pistillate and staminate floral zones well separated, a short zone of neuter, club-shaped organs present above the pistillate flowers; plants with thick corms"	"Sauromatum {Sauromatum venosum}"
10	"Pistillate and staminate floral zones contiguous or almost so, sterile organs sometimes between the two; plants usually tuberous"	11
11	"Sterile organs hair- or bristlelike; leaves 1-3"	Arisaema
11	"Sterile organs club-shaped; leaves often more than 3"	"Dracunculus {Dracunculus vulgaris}"