1	"Calyces absent or reduced to a rim; stigmas long from about 1/3 as long as the styles to as long as them; fruits flattened, disk-like or dividing into mericarps"	2
1	"Calyces evident, 4-lobed; stigmas shorter, clavate to capitate; fruits capsules but neither flattened or disklike"	3
2	"Bracts and bracteoles attached at about the same level; bracteoles hairy; fruits loculicidal capsules"	Cyclocheilon
2	"Bracts attached below the bracteoles; bracteoles glabrous; fruits beaking into 2 mericarps at maturity"	Asepalum
3	"Plants without chlorophyll, not green; all leaves scalelike"	4
3	"Plants with chlorophyll, green; usually at least some leaves well-developed"	5
4	"Calyx lobes obtuse; corollas almost radially symmetric"	Cistanche
4	"Calyx lobes acute; corollas 2-lipped, upper lips 2-lobed, lower lips 3-lobed"	Orobanche
5	"Some stamens with only 1, or even no, pollen-bearing thecae"	6
5	"All stamens with anthers having 2 pollen-bearing thecae"	8
6	"All anthers with only 1 theca; corolla tubes more or less cylindrical; plants herbs"	Striga
6	"One pair of anthers with 1 theca, the other pair with 2 thecae but 1 theca reduced; corolla tubes narrow at the base and distinctly widened above; plants subshrubby herbs or shrubs"	7
7	"2-thecous anthers with stipitate thecae, the sterile theca rounded; calyces up to 10 mm long; plants pilose to glabrous"	Pseudosopubia
7	"2-thecous anthers with sessile thecae, the sterile theca filiform; calyces 11-13 mm long; plants scabrous"	Ghikaea
8	"All anthers with stipitate thecae"	Lindenbergia
8	"Anthers with sessile thecae, sometimes 1 theca sterile"	9
9	"Fruits enclosed by the enlarged, woody calyces at maturity; stigmas capitate; styles straight"	Xylocalyx
9	"Fruits not enclosed by the calyces at maturity or calyces not woody; stigmas clavate to oblong; styles curved to recurved"	10
10	"Corollas yellow to orange with purple markings, narrowly campanulate; all anthers with 2 pollen-bearing thecae"	Alectra
10	"Corollas more or less pink, funnel-shaped, more or less curved; one theca of each pair sterile, sometimes absent"	Harveya