Matayba ptariana

Primary tabs

Matayba ptariana

Content

<<<Calyx>Stamens>Filaments>Hairs

tomentose on lower half1
1. 006-008-003-001

<<<Capsules>Stipes>Lobes>Lobe number

32
2. 007-006-003-001

<<<Leaves>Leaflets>Apex>Shape

acute, obtuse or less often obtusely acuminate3
3. 003-003-006-001

<<<Leaves>Leaflets>Base>Shape

acute to obtuse4
4. 003-003-005-001

<<<Leaves>Leaflets>Margins>Margin type

entire5
5. 003-003-007-001

<<Calyx>Appendages>Appendage number

26
6. 006-006-001

<<Calyx>Appendages>Hairs

tomentose7
7. 006-006-002

<<Calyx>Disk>Hairs

glabrous8
8. 006-007-001

<<Calyx>Disk>Shape

pentagonal, annular9
9. 006-007-002

<<Calyx>Lobes>Hairs

ciliate10
10. 006-004-003

<<Calyx>Lobes>Length

1-1.2 mm long11
11. 006-004-002

<<Calyx>Lobes>Shape

triangular12
12. 006-004-001

<<Calyx>Ovary>Hairs

puberulent13
13. 006-009-001

<<Calyx>Petals>Colour

white14
14. 006-005-001

<<Calyx>Petals>Length

1.2-1.5 mm long15
15. 006-005-003

<<Calyx>Petals>Shape

rhombate, clawed16
16. 006-005-002

<<Calyx>Stamens>Filaments

the filaments ;17
17. 006-008-003

<<Calyx>Stamens>Length

ca. 2.5 mm long18
18. 006-008-002

<<Calyx>Stamens>Stamen number

819
19. 006-008-001

<<Capsules>Stipes>Length

5-7 mm long20
20. 007-006-001

<<Capsules>Stipes>Lobes

with divaricate lobes21
21. 007-006-003

<<Capsules>Stipes>Shape

turbinate22
22. 007-006-002

<<Flowers>Pedicels>Length

5-7 mm long23
23. 005-001-001

<<Leaves>Leaflets>Apex

the apex ,24
24. 003-003-006

<<Leaves>Leaflets>Base

the base ,25
25. 003-003-005

<<Leaves>Leaflets>Dimensions

3.5-10 (13.5) × 1.5-5 cm26
26. 003-003-004

<<Leaves>Leaflets>Hairs

glabrous27
27. 003-003-002

<<Leaves>Leaflets>Margins

the margins , revolute;28
28. 003-003-007

<<Leaves>Leaflets>Shape

elliptic or oblong-elliptic29
29. 003-003-003

<<Leaves>Leaflets>Texture

coriaceous30
30. 003-003-001

<<Leaves>Petiole>Hairs

glabrous31
31. 003-001-002

<<Leaves>Petiole>Length

1-3.5 cm long32
32. 003-001-001

<<Leaves>Petiole>Shape

striate, pulvinate at base33
33. 003-001-003

<<Leaves>Petiolule>Length

3-5 mm long34
34. 003-002-001

<<Thyrses>Axes>Hairs

puberulent35
35. 004-004-001

<Calyx>Appendages

appendages , marginal (including the clawed portion), or sometimes connate into a single larger, appendage;36
36. 006-006

<Calyx>Disk

disc , ;37
37. 006-007

<Calyx>Hairs

puberulent38
38. 006-001

<Calyx>Length

1.2-1.5 mm long39
39. 006-003

<Calyx>Lobes

the lobes , , ;40
40. 006-004

<Calyx>Ovary

ovary .41
41. 006-009

<Calyx>Petals

petals , , ;42
42. 006-005

<Calyx>Shape

cup-shaped43
43. 006-002

<Calyx>Stamens

stamens , ,44
44. 006-008

<Capsules>Colour

reddish45
45. 007-005

<Capsules>Hairs

sparsely puberulent46
46. 007-003

<Capsules>Length

ca. 1.5 cm long (including the stipe)47
47. 007-002

<Capsules>Locule number

3-locular48
48. 007-001

<Capsules>Stipes

long-stipitate (), ,49
49. 007-006

<Capsules>Texture

smooth50
50. 007-004

<Flowers>Pedicels

pedicels .51
51. 005-001

<Habit>Height

1-4 (-10) m tall52
52. 001-001

<Leaves>Leaflets

leaflets opposite, , , , ,53
53. 003-003

<Leaves>Midveins

midvein prominent on abaxial surface.54
54. 003-004

<Leaves>Petiole

petioles , , ;55
55. 003-001

<Leaves>Petiolule

petiolules pulvinate, ;56
56. 003-002

<Seeds>Length

ca. 7 mm long57
57. 008-001

<Seeds>Shape

arillate apparently only at base58
58. 008-002

<Stems>Hairs

glabrous59
59. 002-001

<Stems>Texture

smooth or sparsely lenticellate60
60. 002-002

<Thyrses>Axes

axes , angled.61
61. 004-004

<Thyrses>Length

5-8 (-13) cm long62
62. 004-002

<Thyrses>Position

axillary63
63. 004-001

<Thyrses>Shape

simple or seldom paniculate64
64. 004-003

Calyx

Calyx , , ,65
65. 006

Capsules

Capsule , , , , , .66
66. 007

Description

Small tree or shrub 1-4 (-10) m tall. Stems glabrous, smooth or sparsely lenticellate. Leaves bifoliolate; petioles 1-3.5 cm long, glabrous, striate, pulvinate at base; petiolules pulvinate, 3-5 mm long; leaflets opposite, coriaceous, glabrous, elliptic or oblong-elliptic, 3.5-10 (13.5) × 1.5-5 cm, the base acute to obtuse, the apex acute, obtuse or less often obtusely acuminate, the margins entire, revolute; midvein prominent on abaxial surface. Thyrses axillary, 5-8 (-13) cm long, simple or seldom paniculate; axes puberulent, angled. Flowers in simple dichasia, or solitary; pedicels 5-7 mm long. Calyx puberulent, cup-shaped, 1.2-1.5 mm long, the lobes triangular, 1-1.2 mm long, ciliate; petals white, rhombate, clawed, 1.2-1.5 mm long; appendages 2, marginal (including the clawed portion), or sometimes connate into a single larger, tomentose appendage; disc glabrous, pentagonal, annular; stamens 8, ca. 2.5 mm long, the filaments tomentose on lower half; ovary puberulent. Capsule 3-locular, ca. 1.5 cm long (including the stipe), sparsely puberulent, smooth, reddish, long-stipitate (5-7 mm long), turbinate, with 3 divaricate lobes. Seed ca. 7 mm long, arillate apparently only at base.

Distribution

Bolivar endemic, Guyana endemic, Southern America: Venezuela (Venezuela endemic)
Endemic to Guyana and the state of Bolívar in Venezuela.

Flowers

Flowers in simple dichasia, or solitary;67
67. 005

Habit

Small tree or shrub .68
68. 001

Individuals Association

Guyana, Karowrieng R. at Maipuri falls, Hoffman 2955 Guyana, Karo R., Maas et al. 4362 Guyana, Cuyuni-Mazaruni, Holitipu, tepui savanna, Clarke 1035 Guyana, Imbaimadai, Gillespie & Smart 2692 Guyana, Upper Mazaruni R., Pinkus 232 Guyana, Pakaraima Mts., Pipoly & Alfred 7902

Leaves

Leaves bifoliolate;69
69. 003

Seeds

Seed , .70
70. 008

Stems

Stems , .71
71. 002

Thyrses

Thyrses , , ;72
72. 004