*** Coronal scales short, broad; filaments connate, with interposed glands.
Cymes peduncled. Corolla-lobes ovate, valvate
12. Decalepis.
**** Coronal scales connate into a lobed ring; filaments without interposed glands.
Corolla rotate, lobes overlapping
13. Ferifeoca.
Suborder II. Euasclepiadeæ. Filaments connate; pollen-masses
waxy.
Tribe II. Secamoneæ. Anthers with a membranous inflexed tip:
pollen-masses in pairs in each cell (20 in all), sessile in fours (2 pairs) on the corpuscle.
Corolla rotate, lobes overlapping to the right
14. Secamone.
Corolla rotate, lobes overlapping to the left
15. Toxocarpus.
Corolla sotate, lobes valvate
16. Genianthus.
Tribe III. Cynancheæ. Anthers with a membranous inflexed tip;
pollen-masses solitary in each cell (10 in all), sessile or pedicelled in pairs on the corpuscle, pendulous.
*
Corona single, corolline, 5-cleft
17. Geossonema.
**
Corona double, corolline and staminal
18. Oxystkeica.
*** Corona staminal, of 5 processes adnate to the anthers; or 0.