Roupala nitida

Primary tabs

Roupala nitida

Content

<<<Flowers>Filaments>Anthers>Dimensions

1-1.8 x 0.2-0.3 mm1
1. 005-002-003-001

<<<Flowers>Ovary>Hairs>Colour

yellow-brown2
2. 005-004-001-001

<<<Fruits>Apex>Groove>Colour

pale brown3
3. 007-003-002-001

<<<Fruits>Apex>Groove>Width

2 mm wide4
4. 007-003-002-002

<<<Fruits>Apex>Immature fruits>Colour

dark brown or black when immature, becoming paler5
5. 007-003-003-001

<<<Fruits>Seeds>Wings>Texture

somewhat coriaceous6
6. 007-004-002-001

<<<Leaves>Blade>Apex>Shape

predominantly attenuate, less frequently acute, frequently folded7
7. 002-005-005-001

<<<Leaves>Blade>Base>Shape

cuneate or acute-decurrent, usually symmetrical8
8. 002-005-004-001

<<<Leaves>Blade>Margins>Margin type

entire9
9. 002-005-006-001

<<<Leaves>Petiole>Dimensions>Length

1-3(-5) cm long10
10. 002-004-001-001

<<<Leaves>Petiole>Dimensions>Width

1-2.5 mm broad at midlength11
11. 002-004-001-002

<<<Leaves>Veins>Secondary veins>Secondary vein pair number

5-10 pairs12
12. 002-006-003-001

<<Flower buds>Apex>Width

0.7-0.8 mm broad13
13. 004-001-001

<<Flower buds>Midlength>Width

0.4-0.5 mm broad at midlength14
14. 004-002-001

<<Flowers>Filaments>Anthers

anthers ;15
15. 005-002-003

<<Flowers>Filaments>Length

0-0.7 mm long16
16. 005-002-001

<<Flowers>Filaments>Relative distance

attached to tepals 2.8-4.5 mm from base17
17. 005-002-002

<<Flowers>Glands>Length

0.2-0.3 mm long18
18. 005-003-001

<<Flowers>Glands>Texture

fleshy19
19. 005-003-002

<<Flowers>Ovary>Hairs

glabrous or very sparse covered with short, appressed, hairs20
20. 005-004-001

<<Fruits>Apex>Constriction

constricted for 3-4 mm21
21. 007-003-001

<<Fruits>Apex>Groove

groove developing at suture22
22. 007-003-002

<<Fruits>Apex>Hairs

glabrous23
23. 007-003-004

<<Fruits>Apex>Immature fruits

and opening out completely so the fruit sides are in the same plane when dehisced, remaining attached only for short distance along non-sutured side24
24. 007-003-003

<<Fruits>Seeds>Dimensions

2-2.3 x 1.6-1.8 cm25
25. 007-004-001

<<Fruits>Seeds>Wings

wing26
26. 007-004-002

<<Fruits>Shape>Constriction

markedly constricted for 4-7 mm at base27
27. 007-002-001

<<Habit>Bark>Colour

sandy-brown superficially, dark brown beneath28
28. 001-003-001

<<Habit>Bark>Hairs

glabrous29
29. 001-003-002

<<Habit>Lenticels>Lenticel number

numerous30
30. 001-004-001

<<Inflorescences>Bracts>Dimensions

0.8-1 x 0.5-0.6 mm31
31. 003-006-001

<<Inflorescences>Bracts>Hairs

glabrous within and without except fimbriate margin of ferrugineous to rufous hairs32
32. 003-006-002

<<Inflorescences>Pedicels>Dimensions

1.5-3 x 0.3-0.4 mm33
33. 003-008-001

<<Inflorescences>Pedicels>Hairs

sparsely pilose34
34. 003-008-002

<<Inflorescences>Peduncle>Dimensions

0.1-1.3 cm x 0.8-1.8 mm35
35. 003-004-001

<<Infructescences>Fruit pedicels>Dimensions

3-5 x 1.2-1.5 mm36
36. 006-003-001

<<Leaves>Blade>Apex

apex ,37
37. 002-005-005

<<Leaves>Blade>Base

base ,38
38. 002-005-004

<<Leaves>Blade>Dimensions

10-36.5 x 3.5-10 cm39
39. 002-005-002

<<Leaves>Blade>Length relative to width

(length:breadth 2-4:1)40
40. 002-005-003

<<Leaves>Blade>Margins

margin , revolute towards base;41
41. 002-005-006

<<Leaves>Blade>Shape

narrowly oblong or oblong, rarely elliptic42
42. 002-005-001

<<Leaves>Petiole>Dimensions

x43
43. 002-004-001

<<Leaves>Petiole>Hairs

glabrous44
44. 002-004-002

<<Leaves>Veins>Midveins

midvein narrowly grooved, conspicuous and prominent beneath, semicraspedodromous (at times appearing eucamptodromous), often forming double marginal vein,45 midvein reaching apex,46
45. 002-006-001, 46. 002-006-002

<<Leaves>Veins>Secondary veins

secondary veins .47
47. 002-006-003

<Flower buds>Apex

at apex48
48. 004-001

<Flower buds>Hairs

sparsely pilose49
49. 004-003

<Flowers>Filaments

filaments , ,50
50. 005-002

<Flowers>Glands

hypogynous glands , , commonly appressed or fused together forming a continuous ring;51
51. 005-003

<Flowers>Length

3.5-5 mm long52
52. 005-001

<Flowers>Ovary

ovary .53
53. 005-004

<Fruits>Apex

apex , persistent base of style forming sharp apex, marginal vein prominent, venation conspicuous on surface, , , ;54
54. 007-003

<Fruits>Dimensions

3-3.7 x 1.8-2.2 cm55
55. 007-001

<Fruits>Seeds

seeds , .56
56. 007-004

<Fruits>Shape

hemispherical around uppermost (sutured) edge, slightly rounded on lowermost edge,57
57. 007-002

<Habit>Bark

branch bark , ;58
58. 001-003

<Habit>Growth form

sometimes scandent59
59. 001-002

<Habit>Height

1.5-13 m tall60
60. 001-001

<Habit>Lenticels

lenticels , inconspicuous.61
61. 001-004

<Inflorescences>Bracts

common bracts , ;62
62. 003-006

<Inflorescences>Dimensions

3.5-18.5 x 1-1.5 cm63
63. 003-002

<Inflorescences>Flowers

flower-pair axis absent;64
64. 003-007

<Inflorescences>Hairs

sparsely pilose65
65. 003-003

<Inflorescences>Pedicels

pedicels , .66
66. 003-008

<Inflorescences>Peduncle

peduncle ;67
67. 003-004

<Inflorescences>Position

axillary68
68. 003-001

<Inflorescences>Sterile bracts

sterile bracts at base abundant and persistent;69
69. 003-005

<Infructescences>Fruit pedicels

fruit pedicels .70
70. 006-003

<Infructescences>Hairs

glabrous or glabrescent71
71. 006-002

<Infructescences>Length

4.5-11.5 cm long72
72. 006-001

<Leaves>Blade

blade , ,73
73. 002-005

<Leaves>Colour

drying pale green to green-brown, matt or shiny above74
74. 002-002

<Leaves>Hairs

glabrous75
75. 002-003

<Leaves>Petiole

petiole not well defined, , terete towards base, grooved towards blade rugose, , petiole base often with conspicuous scar at limit with branch (not stipular), branch elevated where petiole emerge;76
76. 002-004

<Leaves>Texture

thin-coriaceous77
77. 002-001

<Leaves>Veins

venation ± conspicuous above, slightly raised,78
78. 002-006

Common Name

English (French Guiana): tatukasi, wayâpi

Description

Tree or shrub 1.5-13 m tall, sometimes scandent; branch bark sandy-brown superficially, dark brown beneath, glabrous; lenticels numerous, inconspicuous. Leaves simple, thin-coriaceous, drying pale green to green-brown, matt or shiny above, glabrous; petiole not well defined, 1-3(-5) cm long x 1-2.5 mm broad at midlength, terete towards base, grooved towards blade rugose, glabrous, petiole base often with conspicuous scar at limit with branch (not stipular), branch elevated where petiole emerge; blade narrowly oblong or oblong, rarely elliptic, 10-36.5 x 3.5-10 cm(length:breadth 2-4:1), base cuneate or acute-decurrent, usually symmetrical, apex predominantly attenuate, less frequently acute, frequently folded, margin entire, revolute towards base; venation ± conspicuous above, slightly raised, midvein narrowly grooved, conspicuous and prominent beneath, semicraspedodromous (at times appearing eucamptodromous), often forming double marginal vein, midvein reaching apex, secondary veins 5-10 pairs. Inflorescence axillary, unbranched, 3.5-18.5 x 1-1.5 cm, sparsely pilose, ferrugineous; peduncle 0.1-1.3 cm x 0.8-1.8 mm; sterile bracts at base abundant and persistent; common bracts 0.8-1 x 0.5-0.6 mm, glabrous within and without except fimbriate margin of ferrugineous to rufous hairs; flower-pair axis absent; pedicels 1.5-3 x 0.3-0.4 mm, sparsely pilose. Flower buds 0.7-0.8 mm broad at apex, 0.4-0.5 mm broad at midlength, sparsely pilose. Flowers 3.5-5 mm long; filaments 0-0.7 mm long, attached to tepals 2.8-4.5 mm from base, anthers 1-1.8 x 0.2-0.3 mm; hypogynous glands 0.2-0.3 mm long, fleshy, commonly appressed or fused together forming a continuous ring; ovary glabrous or very sparse covered with short, appressed, yellow-brown hairs. Infructescence 4.5-11.5 cm long, glabrous or glabrescent; fruit pedicels 3-5 x 1.2-1.5 mm. Fruit 3-3.7 x 1.8-2.2 cm, hemispherical around uppermost (sutured) edge, slightly rounded on lowermost edge, markedly constricted for 4-7 mm at base, apex constricted for 3-4 mm, persistent base of style forming sharp apex, marginal vein prominent, venation conspicuous on surface, pale brown groove 2 mm wide developing at suture, dark brown or black when immature, becoming paler and opening out completely so the fruit sides are in the same plane when dehisced, remaining attached only for short distance along non-sutured side, glabrous; seeds 2-2.3 x 1.6-1.8 cm, wing somewhat coriaceous.

Distribution

French Guiana present, Southern America: Brazil North (Pará present); Colombia (Colombia present), along watercourses which drain into the Oyapock and the Amazon rivers present
French Guiana and Brazil (Pará), along watercourses which drain into the Oyapock and the Amazon rivers, and disjunct in Colombia (Antioquia); (FG: 7).

Flower buds

Flower buds , , .79
79. 004

Flowers

Flowers ;80
80. 005

Fruits

Fruit , ,81
81. 007

Habit

Tree or shrub , ;82
82. 001

Individuals Association

bank of Yaroupi R. (affluent of Oyapock R.), upstream from Saut Couéki, de Granville 481 bank of Haut Oyapock R., ca. 3 km upstream from Camopi R., Oldeman 3056

Inflorescences

Inflorescence , unbranched, , , ferrugineous;83
83. 003

Infructescences

Infructescence , ;84
84. 006

Leaves

Leaves simple, , , ;85
85. 002

Notes

Most closely related to Roupala suaveolens, R. nitida may be seen as the eastern and western extension to the distribution of that species. However, there are many differences, R. nitida lacks the dense indumentum which covers most of the parts of R. suaveolens, although it may retain sparse, weak hairs on parts of the inflorescence. Roupala nitida frequently has a scar at the base of the petiole which does not occur in R. suaveolens. The leaf blade of R. nitida has a larger length:breadth ratio 2-4:1 vs. 1.1-2.5:1; flowers are considerably smaller in R. nitida (3.5-5 mm long, vs. 7-11 mm long). Despite the smaller flowers, fruits of R. nitida are larger, in particular in breadth (3-3.7 x 1.8-2.2 cm vs. 1.8-3.2 x 0.9-1.5 cm), and the suture has a wide groove which develops prior to dehiscence which is not seen in R. suaveolens.

Phenology

Flowering from , fruiting from