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

24 Flora Neotropica
2. Key to the Coussapoa Species in Colombia
1. Interfloral bracts absent.
2. Lateral veins 2-8 pairs, basal pair reaching the margin above (or at) the middle of the lamina.
3. Basal pair of lateral veins unbranched; stamen 1; pistillate flowers free. ........ 31. C. orthoneura.
3. Basal pair of lateral veins branched; stamens 3; pistillate flowers cohere. .........34. C. parviceps.
2. Lateral veins at least 8 pairs, or if less then basal pair reaching the margin below the middle of the
lamina.
4. Lamina in the areoles beneath glabrous or with sparse hairs.
5. Stipules 2-3 cm long . .................................................... 46. C. valaria.
5. Stipules 4-13 cm long.
6. Base of the lamina cordate; basal pair of lateral veins reaching the margin above or at the
middle of the lamina . .............................................. 5. C. batavorum.
6. Base of the lamina (sub)obtuse or rounded to truncate; basal pair of lateral veins reaching
the margin below the middle of the lamina ........................... 27. C. napoensis.
4. Lamina in the areoles beneath with dense, minute hairs.
7. Indumentum of the petiole consisting of dense, minute hairs and distinctly longer, yellowish
hairs . .................................................................... C. 28. nitida.
7. Indumentum of the petiole consisting of short hairs, not distinctly different in length.
8. Indumentum of the leafy twigs and stipules (unicellular hairs only) brown(ish); petiole 5-
7 m m thick. ..................................................... 8. C. cinnam omea.
8. Indumentum of the leafy twigs and stipules (unicellular hairs only) white or yellowish;
petiole 2-4 mm thick.
9. Intercostal venation almost plane; pistillate inflorescences unbranched ... 6. C. brevipes.
9. Intercostal venation prominent; pistillate inflorescences branched .... 45. C. tolimensis.
1. Interfloral bracts present.
10. Lamina trinervate ........................................................... 40. C. trinervia.
10. Lamina pinnately veined.
11. Lamina beneath with arachnoid indumentum.
12. Arachnoid indumentum on the lamina beneath brown(ish).
13. Lateral veins 4-8(-11) pairs; pistillate inflorescences pluricapitate; staminate flower
heads ca. 2-3 mm in diameter ................... .............. 11. C. crassivenosa.
13. Lateral veins (7-)10-24 pairs; pistillate inflorescences (usually) unicapitate; staminate
flower heads 4-10 mm in diameter.
14. Common peduncle of the staminate inflorescence 1-2 cm long, that of the pistillate
inflorescence 0.5-0.8 cm long; pistillate flower heads ellipsoid to clavate. .....
........................... ................................... 14. C . duquei.
14. Common peduncle of the staminate inflorescence 2-6 cm long, that of the pistillate
inflorescence (1-)2-13 cm long; pistillate flower heads (sub)globose. .. 42. C. villosa.
12. Arachnoid indumentum on the lamina beneath whitish.
15. Stamen 1; pistillate inflorescence pluricapitate and the common peduncle 2-3 cm long,
2-4 mm thick; perianth of the pistillate flower almost glabrous ...... 39. C. tessmannii.
15. Stamens 2 or 3; pistillate inflorescence unicapitate, or if pluricapitate then the common
peduncle longer than 3 cm, less than 2 mm thick, and/or the perianth of the pistillate
flower densely puberulous.
16. Stamens 3; pistillate flower heads 6-10. ......................... 19. C. herthae.
16. Stamens 2; pistillate flower heads 1(-3). ........................ 42. C. villosa.
11. Lamina beneath without arachnoid indumentum.
17. Lamina beneath with domatium-like cavities in the axils of the lateral veins; interfloral
bracts large and peltate .................................. ............. 10. C. contorta.
17. Lamina beneath without domatium-like cavities; interfloral bracts relatively small and
spathulate to subpeltate.
18. Stipules glabrous or sparsely puberulous ............................ 34. C. parviceps.
18. Stipules with + dense indumentum.
19. Basal lateral veins distinctly branched.
20. Lamina about as long as broad; lateral veins 5-9 pairs. ..... 41. C. vannifolia.
20. Lamina distinctly longer than broad; lateral veins 8-12 pairs.... 19. C. herthae.
19. Basal lateral veins unbranched (or sometimes with 1-2 branches).
21. Lateral veins 5-6 pairs; intercostal venation inconspicuous .............
................................................... 9. C. cinnam om ifolia.
21. Lateral veins 7-12 pairs; intercostal venation conspicuous.
22. Stipules 0.3-1.3 cm long. ............................ 35. C. parvifolia.
22. Stipules 1.5-2.5 cm long.