Pourouma tomentosa

<<<Stipules>Blade>Apex>Shape

acute to acuminate1

1. 003-004-004-001

<<<Stipules>Blade>Base>Shape

(obtuse to) truncate to deeply cordate2

2. 003-004-005-001

<<<Stipules>Blade>Dimensions>Lobe number

3-5-lobed3

3. 003-004-003-001

<<<Stipules>Blade>Lower surfaces>Hairs

with arachnoid hairs between the tertairy veins, initially also on the main veins4

4. 003-004-007-001

<<<Stipules>Blade>Upper surfaces>Hairs

puberulous to hirtellous on the primary vein5

5. 003-004-006-002

<<<Stipules>Blade>Upper surfaces>Texture

smooth6

6. 003-004-006-001

<<Branchlets>Hairs>Colour

brown7

7. 002-002-001

<<Fruiting perianth>Hairs>Colour

yellowish-puberulous to -velutinous, and/or (initially) white8

8. 006-003-001

<<Fruiting perianth>Pedicels>Length

up to 1.1 cm long9

9. 006-004-001

<<Pistillate inflorescences>Flowers>Flower number

5-2010

10. 005-002-001

<<Pistillate inflorescences>Pedicels>Length

2-4 mm11

11. 005-003-001

<<Pistillate inflorescences>Peduncle>Length

5-7 cm long12

12. 005-001-001

<<Pistillate inflorescences>Perianth>Length

4-5 mm long13

13. 005-004-001

<<Pistillate inflorescences>Stigma>Shape

discoid14

14. 005-005-001

<<Staminate inflorescences>Filaments>Relative dimensions

longer than the tepals15

15. 004-004-001

<<Staminate inflorescences>Flowers>Arrangement

densely glomerate in (sub)globose heads16

16. 004-002-001

<<Staminate inflorescences>Peduncle>Length

2-3 cm long17

17. 004-001-001

<<Staminate inflorescences>Tepals>Shape

connate18

18. 004-003-001

<<Stipules>Blade>Apex

apex ,19

19. 003-004-004

<<Stipules>Blade>Base

base ,20

20. 003-004-005

<<Stipules>Blade>Dimensions

5-21 x 3-13 cm, or to -parted and 15-40 x 15-23 cm21

21. 003-004-003

<<Stipules>Blade>Lower surfaces

lower surface ;22

22. 003-004-007

<<Stipules>Blade>Shape

ovate to elliptic23

23. 003-004-002

<<Stipules>Blade>Texture

coriaceous24

24. 003-004-001

<<Stipules>Blade>Upper surfaces

upper surface , ,25

25. 003-004-006

<<Stipules>Hairs>Colour

yellow-hirsute, and usually also with white26

26. 003-002-001

<<Stipules>Petiole>Hairs

puberulous to hirtellous, initially arachnoid-villous27

27. 003-003-002

<<Stipules>Petiole>Length

4-15 cm long28

28. 003-003-001

<<Stipules>Secondary veins>Secondary vein pair number

10-26 pairs29

29. 003-005-001

<Branchlets>Hairs

(sparsely) puberulous to hirtellous and with dense, , pluricellular hairs, often initially arachnoid-villous30

30. 002-002

<Branchlets>Lenticels

lenticels ± conspicuous.31

31. 002-003

<Branchlets>Thickness

2-7 mm thick32

32. 002-001

<Fruiting perianth>Hairs

-arachnoid-tomentose33

33. 006-003

<Fruiting perianth>Length

ca. 2 cm long34

34. 006-002

<Fruiting perianth>Pedicels

pedicel .35

35. 006-004

<Fruiting perianth>Shape

subovoid to ellipsoid36

36. 006-001

<Habit>Height

up to 20m tall37

37. 001-001

<Pistillate inflorescences>Flowers

flowers ;38

38. 005-002

<Pistillate inflorescences>Pedicels

pedicel ;39

39. 005-003

<Pistillate inflorescences>Peduncle

peduncle ;40

40. 005-001

<Pistillate inflorescences>Perianth

perianth ;41

41. 005-004

<Pistillate inflorescences>Stigma

stigma .42

42. 005-005

<Staminate inflorescences>Filaments

filaments .43

43. 004-004

<Staminate inflorescences>Flowers

flowers , sessile to pedicellate;44

44. 004-002

<Staminate inflorescences>Peduncle

peduncle ;45

45. 004-001

<Staminate inflorescences>Tepals

tepals ;46

46. 004-003

<Stipules>Blade

blade , entire, , and ,47

47. 003-004

<Stipules>Hairs

, arachnoid hairs outside, glabrous inside48

48. 003-002

<Stipules>Length

3-18 cm long49

49. 003-001

<Stipules>Petiole

petiole , ;50

50. 003-003

<Stipules>Secondary veins

secondary veins , basal pair branched.51

51. 003-005

Branchlets

Branchlets , ;52

52. 002

Description

Tree up to 20m tall. Branchlets 2-7 mm thick, (sparsely) puberulous to hirtellous and with dense, brown, pluricellular hairs, often initially arachnoid-villous; lenticels ± conspicuous. Stipules 3-18 cm long, caducous, yellow-hirsute, and usually also with white, arachnoid hairs outside, glabrous inside; petiole 4-15 cm long, puberulous to hirtellous, initially arachnoid-villous; blade coriaceous, entire, ovate to elliptic, and 5-21 x 3-13 cm, or 3-5-lobed to -parted and 15-40 x 15-23 cm, apex acute to acuminate, base (obtuse to) truncate to deeply cordate, upper surface smooth, puberulous to hirtellous on the primary vein, lower surface with arachnoid hairs between the tertairy veins, initially also on the main veins; secondary veins 10-26 pairs, basal pair branched. Staminate inflorescences: peduncle 2-3 cm long; flowers densely glomerate in (sub)globose heads, sessile to pedicellate; tepals connate; filaments longer than the tepals. Pistillate inflorescences branched; peduncle 5-7 cm long; flowers 5-20; pedicel 2-4 mm; perianth 4-5 mm long; stigma discoid. Fruiting perianth subovoid to ellipsoid, ca. 2 cm long, yellowish-puberulous to -velutinous, and/or (initially) white-arachnoid-tomentose; pedicel up to 1.1 cm long.

Distribution

Amazon Basin present, Guianas present, eastern Venezuela present

Amazon Basin and the Guianas to eastern Venezuela.

Fruiting perianth

Fruiting perianth , , ;53

53. 006

Habit

Tree .54

54. 001

Notes

Five subspecies have been recognized. Two of them are found in the Guianas.

Pistillate inflorescences

Pistillate inflorescences branched;55

55. 005

Staminate inflorescences

Staminate inflorescences:56

56. 004

Stipules

Stipules , caducous, ;57

57. 003

Primary tabs

Content