1	"All tendrils unbranched"	2
1	"Most or all tendrils branched"	8
2	"Corolla white"	3
2	"Corolla yellow"	5
3	"Leaves deltate, sometimes hastate at base, unlobed; fruits 7-10 mm long; probract absent"	Zehneria
3	"Leaves not deltate, always lobed to some extent; fruits 17-60 mm long; probract present at base of peduncle"	4
4	"Leaves with several obvious embedded circular glands (lower surface of lamina, close to petiole); fruits red at maturity, glabrous"	Coccinia
4	"Leaves without embedded glands; fruits green at maturity, with many soft bristles up to 8 mm long"	Muellerargia
5	"Pedicels of male flowers with a single +/- circular bract; leaf lamina glabrous or with hairs confined to main veins"	Momordica
5	"All pedicels lacking a bract; leaf lamina with hairs distributed throughout"	6
6	"Leaf lamina length (measured from top of petiole) greater than the width, minor lobes numerous, semi-circular; fruits 50-120 mm wide, with pale longitudinal stripes; probract present at base of peduncle"	Citrullus
6	"Leaf lamina length (measured from top of petiole) often less than the width, minor lobes few, acute or obtuse; fruits 4-50(-70) mm wide, uniform in colour; probract absent"	7
7	"Seeds ovate in profile, surfaces flat"	Austrobryonia
7	"Seeds elliptical in profile, surfaces convex"	Cucumis
8	"Leaves with 2 protruding glands at the top of the petiole"	Lagenaria
8	"Protruding glands absent from top of petiole"	9
9	"Tendrils spiralling below point of branching, branched section much shorter than unbranched section; fruit with truncate apex"	Neoalsomitra
9	"Tendrils not spiralling below point of branching, branched section equal to or longer than unbranched section; apex of fruit acute or obtuse"	10
10	"Inflorescences fasciculate; mature fruits red with several longitudinal white stripes; hairs on petiole broad-based, curved, thorn-like"	Diplocyclos
10	"Inflorescences racemose or flowers solitary; mature fruits green (sometimes with longitudinal stripes) OR entirely yellow, orange or red; hairs on petiole not broad-based or thorn-like"	11
11	"Leaves with 1-several dark embedded circular glands (lower surface of lamina, close to petiole) OR with pale circular cystoliths on the petiole"	12
11	"Leaves with neither embedded circular glands nor pale circular cystoliths"	13
12	"Corolla white or creamy, distal part divided into many filamentous lobes; mature fruits more or less fleshy"	Trichosanthes
12	"Corolla bright yellow, without filamentous lobes; mature fruits dry and fibrous"	Luffa
13	"Leaves trifoliolate"	Nothoalsomitra
13	"Leaves simple"	14
14	"Corolla of female flowers 6-11 cm long; petioles 13-30cm long on fertile stems"	Cucurbita
14	"Corolla of female flowers 1-2 cm long; petioles 0.5-12 cm long on fertile stems"	15
15	"Leaves deeply divided; fruits globose, green with pale longitudinal stripes, containing many seeds"	Citrullus
15	"Leaves mostly shallowly lobed; fruits narrowly ellipsoidal to ovoid, uniformly green, 1-seeded"	16
16	"Fruits 0.7-1.2 cm long, with many retrorsely-barbed spines; corolla lobes 3-4 mm long; hairs on petioles often > 1 mm long"	Sicyos
16	"Fruits 10-18 cm long, without spines; corolla lobes 6-12 mm long; hairs on petioles 0.1-0.3 mm long or hairs absent"	Sechium