Flora of Dominica, Part 2 - Smithsonian Institution Libraries

186 RUBIACEAE SMITHSONIAN CONTRIBUTIONS TO BOTANY
15. Inflorescences rather broad, with 2 or 4 main branches; flowers and fruits
sessile.
16. Inflorescence pubescent ................... Guemrda
16. Inflorescence glabrous.
17. Stipules free; inflorescence branches equaling the peduncle
............................. Antirhea
17. Stipules united in a tube; inflorescence branches much shorter than
the peduncle .................... Neolaugeria
14. Inflorescence not secund.
18. Inflorescence f sessile (peduncle to 1 cm), tightly or not branched.
19. Plants twining vines; calyx foliose, conspicuous ...... Manettia
19. Plants shrubs or small trees; calyx truncate, inconspicuous.
20. Leaves c3 cm long, rounded, plants often armed with stipular spines
Randia
...............................
20. Leaves >10 cm long, acute; plants unarmed.
21. Flowers white, at leafy nodes; stipules persistent. .... Coffea
21. Flowers yellow or red, at leafless nodes; stipules deciduous ...
............................... Zxora
18. Inflorescence long-pedunculate or, if short, then loosely branched.
22. Inflorescences strictly terminal.
23. Flowers >2 cm long; peduncle branched at or near base.
24. Calyx toothed; fruit an elongate capsule ........ Exostema
24. Calyx truncate; fruit a spherical to ellipsoid berry.
25. Flowers white, 4-merous; stamens included; ovary and fruit 4
cm long ....................... Faramea
25. Flowers yellow, 5-merous; stamens exserted, reflexed; ovary
and fruit >1 cm long .................
Genipa
23. Flowers c2 cm long; peduncle unbranched.
26. Peduncle red; flowers yellow; inflorescence k corymbose
............................ Palicourea
26. Peduncle green; flowers white or pink, inflorescence pyramidal.
27. Inflorescence short (