Cecropiaceae: Coussapoa and Pourouma, with an ... - CNCFlora

18 Flora Neotropica
11. Lamina and leafy twigs at least sparsely puberulous; base of the lamina acute to
truncate.
12. Stipules (normally) 1-4 cm long.
13. Margin of the lamina revolute at the base; Pacific coastal region (Colombia).
......................................................... 46. C. valaria.
13. Margin of the lamina not revolute at the base; Amazon Basin and Central
America.
14. Lamina coriaceous, mostly ovate; stamen 1; Amazon Basin (and Panama?).
............................................. 32. C. ovalifolia.
14. Lamina subcoriaceous, elliptic to subobovate; stamens 2; Costa Rica.
........................................ 23. C. macerrima.
12. Stipules 4-13 cm long; Amazonian Ecuador and Colombia. .... 27. C. napoensis.
2. Basal lateral veins unbranched (or occasionally with a single branch).
15. Stipules 0.5-1 cm long; stamens 2; common peduncle or branches of the pistillate inflorescence
not distinctly broadened towards the flower heads; eastern Venezuela, Guyana, and Brazil
(Am azonas, Roraim a). ................................................... 43. C. viridifolia.
15. Stipules (normally) at least 1 cm long, if shorter, then stamen 1 and branches of the pistillate
inflorescence more or less distinctly broadened towards the flower heads.
16. Margin of the lamina distinctly revolute towards the base; pistillate inflorescences mostly
unicapitate; stamens 2; eastern Brazil. ................................ 25. C. microcarpa.
16. Margin of the lamina plane, or if more of less revolute, then the pistillate inflorescences
pluricapitate and stamen 1; Amazon Basin or Central Brazil.
17. Lateral veins 2-8; basal pair of lateral veins reaching the margin above to just below
the middle of the lamina and/or (often) the lamina beneath with dense, minute hairs
in the areoles.
18. Intercostal venation prominent beneath; lamina beneath and inflorescences with
dense, white, arachnoid indumentum; Brazil (Amapa) .......... 2. C. arachnoidea.
18. Intercostal venation plane beneath; lamina and inflorescences without arachnoid
indumentum, or if present, then mostly sparse and soon disappearing; Upper
Amazon Basin.
19. Basal lateral veins reaching the margin above to just below the middle of the
lamina; stipules mostly without or with sparse, long, yellow hairs; branches
of the pistillate inflorescence slightly broadened towards the flower heads;
Upper Amazon Basin and Colombia (Santander). .......... 31. C. orthoneura.
19. Basal lateral veins reaching the margin below to just above the middle of the
lamina; stipules with dense, long, yellow hairs; branches of the pistillate inflorescence
strongly broadened towards the flower heads; Brazil (R6ndonia).
......................................................... 12. C. cupularis.
17. Lateral veins (normally) 7-13 or 7-21 pairs, basal pair reaching the margin far below
the middle of the lamina; lamina beneath glabrous or with sparse hairs in the areoles.
20. Stipules (normally) 1-4 cm long.
21. Lamina coriaceous, mostly ovate; stamen 1; Amazon Basin (and Panama?).
......................................................... 32. C. ovalifolia.
21. Lamina subcoriaceous, elliptic to subobovate; stamens 2; Costa Rica. .....
........................................ 23. C. macerrima.
20. Stipules 4-13 cm long; Amazonian Ecuador and Colombia. ...... 27. C. napoensis.
1. Interfloral bracts present (sometimes small and/or few!).
22. Lamina trinervate or with only the basal pair of lateral veins prominent and the other lateral veins
weak and inconspicuous.
23. Lamina trinervate; intercostal venation prominent beneath; Amazon Basin .... 40. C. trinervia.
23. Lamina with only the basal pair of lateral veins prominent and the other lateral veins weak
and inconspicuous; intercostal venation beneath; Bolivia (La Paz), Ecuador (Pastaza), and
Colombia (Antioquia). ..............................................9. C. cinnamomifolia.
22. Lamina pinnately veined.
24. Lamina above with white arachnoid hairs, at least (sub)persistent on the midrib; eastern Brazil.
25. Stipules ca. 0.5 cm long ............................................... 13. C. curranii.
25. Stipules 1-2.5 cm long ................................................ 17. C. floccosa.
24. Lamina above glabrous (sometimes except for the base of the midrib) or scabrous to scabridulous
with short, rigid hairs; not in eastern Brazil.
26. Lamina scabrous to scabridulous above.
27. Stipules ca. 6 cm long; lamina beneath with arachnoid hairs; basal lateral veins branched;
Peru (Loreto) and Ecuador (Napo). ........................ 22. C. longepedunculata.
27. Stipules up to 3.5 cm long, mostly less than 1 cm long; lamina beneath lacking
arachnoid hairs, or if present then the basal lateral veins unbranched.