Pourouma guianensis subsp. guianensis

<<<<Stipules>Blade>Shape>Juvenile parts>Part number

5-parted1

1. 003-004-002-002-001

<<<Staminate inflorescences>Flowers>Filaments>Relative dimensions

shorter than the tepals2

2. 004-002-003-001

<<<Stipules>Blade>Apex>Shape

acuminate3

3. 003-004-003-001

<<<Stipules>Blade>Base>Shape

cordate (to truncate), in entire leaves to rounded4

4. 003-004-004-001

<<<Stipules>Blade>Lower surfaces>Hairs

subtomentose to subvelutinous (to hirtellous), on the smaller veins sometimes to puberulous, on the main veins hairs often ± appressed, arachnoid hairs mostly confined to the areoles5

5. 003-004-006-001

<<<Stipules>Blade>Shape>Dimensions

10-25(-40) x 10-25(-40) cm or sometimes entire, broadly ovate to elliptic6

6. 003-004-002-003

<<<Stipules>Blade>Shape>Juvenile parts

in (sub)juvenile material to7

7. 003-004-002-002

<<<Stipules>Blade>Shape>Lobe number

3-lobed8

8. 003-004-002-001

<<<Stipules>Blade>Upper surfaces>Hairs

on the main veins hirtellous9

9. 003-004-005-002

<<<Stipules>Blade>Upper surfaces>Texture

scabrous10

10. 003-004-005-001

<<Branchlets>Hairs>Colour

whitish-puberulous to -hirtellous to -subtomentose and with dense, brown11

11. 002-002-001

<<Fruiting perianth>Pedicels>Length

up to 2 cm long12

12. 006-004-001

<<Pistillate inflorescences>Flowers>Flower number

ca. (8-)10-2513

13. 005-002-001

<<Pistillate inflorescences>Pedicels>Length

2-5 mm long14

14. 005-003-001

<<Pistillate inflorescences>Peduncle>Length

(3-)6-12 cm long15

15. 005-001-001

<<Pistillate inflorescences>Perianth>Length

2-4 mm long16

16. 005-004-001

<<Pistillate inflorescences>Stigma>Shape

subpeltate17

17. 005-005-001

<<Staminate inflorescences>Flowers>Arrangement

± clustered but not in globose heads18

18. 004-002-001

<<Staminate inflorescences>Flowers>Filaments

filaments .19

19. 004-002-003

<<Staminate inflorescences>Flowers>Tepals

tepals (almost) free,20

20. 004-002-002

<<Staminate inflorescences>Peduncle>Length

4-6 cm long21

21. 004-001-001

<<Stipules>Blade>Apex

apex ,22

22. 003-004-003

<<Stipules>Blade>Base

base ,23

23. 003-004-004

<<Stipules>Blade>Lower surfaces

lower surface ;24

24. 003-004-006

<<Stipules>Blade>Shape

to -fid, , , ca. 10-20 x 6-14 cm25

25. 003-004-002

<<Stipules>Blade>Texture

subcoriaceous to chartaceous26

26. 003-004-001

<<Stipules>Blade>Upper surfaces

upper surface , ,27

27. 003-004-005

<<Stipules>Hairs>Colour

whitish-subsericeous to -subhirsute and with ± dense, brown, pluricellular hairs outside, glabrous or occasionally with sparse white28

28. 003-002-001

<<Stipules>Petiole>Hairs

puberulous to hirtellous to (sub)hirsute29

29. 003-003-002

<<Stipules>Petiole>Length

4-25(-40) cm long30

30. 003-003-001

<<Stipules>Secondary veins>Secondary vein pair number

(6-)11-15(-20) pairs31

31. 003-005-001

<Branchlets>Hairs

, pluricellular hairs32

32. 002-002

<Branchlets>Thickness

3-15 mm thick33

33. 002-001

<Fruiting perianth>Hairs

subvelutinous34

34. 006-003

<Fruiting perianth>Length

1.2-1.6 cm long35

35. 006-002

<Fruiting perianth>Pedicels

pedicel .36

36. 006-004

<Fruiting perianth>Shape

(sub)ovoid37

37. 006-001

<Habit>Height

up to 30m tall38

38. 001-001

<Pistillate inflorescences>Flowers

flowers ;39

39. 005-002

<Pistillate inflorescences>Pedicels

pedicel ;40

40. 005-003

<Pistillate inflorescences>Peduncle

peduncle ;41

41. 005-001

<Pistillate inflorescences>Perianth

perianth ;42

42. 005-004

<Pistillate inflorescences>Stigma

stigma .43

43. 005-005

<Staminate inflorescences>Flowers

flowers , (sub)sessile,44

44. 004-002

<Staminate inflorescences>Peduncle

peduncle ;45

45. 004-001

<Stipules>Blade

blade , ,46

46. 003-004

<Stipules>Hairs

hairs inside47

47. 003-002

<Stipules>Length

(2-)4-15 cm long48

48. 003-001

<Stipules>Petiole

petiole , ;49

49. 003-003

<Stipules>Secondary veins

secondary veins , basal pair branched, reticulum prominent and conspicuous.50

50. 003-005

Branchlets

Branchlets , .51

51. 002

Description

Tree up to 30m tall. Branchlets 3-15 mm thick, whitish-puberulous to -hirtellous to -subtomentose and with dense, brown, pluricellular hairs. Stipules (2-)4-15 cm long, caducous, whitish-subsericeous to -subhirsute and with ± dense, brown, pluricellular hairs outside, glabrous or occasionally with sparse white hairs inside; petiole 4-25(-40) cm long, puberulous to hirtellous to (sub)hirsute; blade subcoriaceous to chartaceous, 3-lobed to -fid, in (sub)juvenile material to 5-parted, 10-25(-40) x 10-25(-40) cm or sometimes entire, broadly ovate to elliptic, ca. 10-20 x 6-14 cm, apex acuminate, base cordate (to truncate), in entire leaves to rounded, upper surface scabrous, on the main veins hirtellous, lower surface subtomentose to subvelutinous (to hirtellous), on the smaller veins sometimes to puberulous, on the main veins hairs often ± appressed, arachnoid hairs mostly confined to the areoles; secondary veins (6-)11-15(-20) pairs, basal pair branched, reticulum prominent and conspicuous. Staminate inflorescences: peduncle 4-6 cm long; flowers ± clustered but not in globose heads, (sub)sessile, tepals (almost) free, filaments shorter than the tepals. Pistillate inflorescences branched; peduncle (3-)6-12 cm long; flowers ca. (8-)10-25; pedicel 2-5 mm long; perianth 2-4 mm long; stigma subpeltate. Fruiting perianth (sub)ovoid, 1.2-1.6 cm long, subvelutinous; pedicel up to 2 cm long.

Distribution

Amazon Basin present, Guianas present, Southern America: Venezuela (Venezuela present), eastern Brazil present, eastern Colombia present

Amazon Basin, eastern Brazil, the Guianas and the adjacent part of Venezuela, and eastern Colombia.

Fruiting perianth

Fruiting perianth , , ;52

52. 006

Habit

Tree .53

53. 001

Notes

Subsp. guianensis is extremely variable, especially in the Upper Amazon Basin. A second subspecies, subsp. venezuelensis (Cuatrec.) C.C. Berg & van Heusden, is found in the coastal mountains of Venezuela.

Pistillate inflorescences

Pistillate inflorescences branched;54

54. 005

Staminate inflorescences

Staminate inflorescences:55

55. 004

Stipules

Stipules , caducous, ;56

56. 003