Matayba ayangannensis

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Matayba ayangannensis

Content

<<<Calyx>Ovary>Style>Branch number

3-branched1
1. 006-008-002-001

<<<Calyx>Stamens>Filaments>Hairs

lanose on lower half2
2. 006-007-003-001

<<<Leaves>Leaflets>Apex>Shape

emarginate or less often rounded3
3. 003-003-008-001

<<<Leaves>Leaflets>Base>Shape

obtuse, symmetrical4
4. 003-003-007-001

<<<Leaves>Leaflets>Margins>Margin type

entire5
5. 003-003-009-001

<<<Thyrses>Axes>Hairs>Colour

ferruginous6
6. 004-004-001-001

<<Calyx>Appendages>Appendage number

27
7. 006-005-001

<<Calyx>Appendages>Hairs

sericeous-tomentose8
8. 006-005-002

<<Calyx>Appendages>Length

ca. 1 mm long9
9. 006-005-003

<<Calyx>Appendages>Position

supra basal10
10. 006-005-004

<<Calyx>Disk>Hairs

glabrous11
11. 006-006-001

<<Calyx>Disk>Shape

pulvinate12
12. 006-006-002

<<Calyx>Lobes>Length

0.5-0.7 mm long13
13. 006-003-002

<<Calyx>Lobes>Shape

ovate14
14. 006-003-001

<<Calyx>Ovary>Hairs

tomentulose15
15. 006-008-001

<<Calyx>Ovary>Style

the style .16
16. 006-008-002

<<Calyx>Petals>Colour

yellowish white17
17. 006-004-001

<<Calyx>Petals>Hairs

lanose mostly along margins18
18. 006-004-004

<<Calyx>Petals>Length

ca. 1 mm long19
19. 006-004-003

<<Calyx>Petals>Shape

spatulate20
20. 006-004-002

<<Calyx>Stamens>Filaments

the filaments ;21
21. 006-007-003

<<Calyx>Stamens>Length

2-2.5 mm long22
22. 006-007-002

<<Calyx>Stamens>Stamen number

823
23. 006-007-001

<<Flowers>Pedicels>Hairs

pubescent24
24. 005-001-002

<<Flowers>Pedicels>Length

ca. 2 mm long25
25. 005-001-001

<<Leaves>Leaflets>Apex

the apex ,26
26. 003-003-008

<<Leaves>Leaflets>Base

the base ,27
27. 003-003-007

<<Leaves>Leaflets>Colour

discolorous (abaxial surface drying brownish)28
28. 003-003-005

<<Leaves>Leaflets>Dimensions

2.5-4.5 × 1.2-2.3 cm29
29. 003-003-004

<<Leaves>Leaflets>Hairs

adaxially glabrous, abaxially puberulent, especially along midvein30
30. 003-003-006

<<Leaves>Leaflets>Leaflet number

(4) 631
31. 003-003-001

<<Leaves>Leaflets>Margins

the margins , slightly revolute;32
32. 003-003-009

<<Leaves>Leaflets>Shape

obovate, oblanceolate to nearly elliptic33
33. 003-003-003

<<Leaves>Leaflets>Texture

coriaceous34
34. 003-003-002

<<Leaves>Petiole plus rachis>Hairs

puberulent35
35. 003-001-003

<<Leaves>Petiole plus rachis>Length

2-6.5 cm long36
36. 003-001-001

<<Leaves>Petiole plus rachis>Shape

slightly flattened adaxially, striate37
37. 003-001-002

<<Leaves>Petiolule>Length

ca. 5 mm long38
38. 003-002-001

<<Leaves>Petiolule>Shape

pulvinate at base39
39. 003-002-002

<<Thyrses>Axes>Hairs

-pubescent40
40. 004-004-001

<Calyx>Appendages

appendages , , , ;41
41. 006-005

<Calyx>Colour

brownish yellow, ferruginous42
42. 006-001

<Calyx>Disk

disc , ;43
43. 006-006

<Calyx>Length

ca. 1 mm long44
44. 006-002

<Calyx>Lobes

the lobes , ;45
45. 006-003

<Calyx>Ovary

ovary ,46
46. 006-008

<Calyx>Petals

petals , , , emarginate at apex, ;47
47. 006-004

<Calyx>Stamens

stamens , ,48
48. 006-007

<Flowers>Pedicels

pedicels , .49
49. 005-001

<Habit>Height

to 2.5 m tall50
50. 001-001

<Leaves>Leaflets

leaflets , opposite or nearly so, rigid , , , brittle, , ,51
51. 003-003

<Leaves>Midveins

midvein abaxially prominent, secondary and tertiary veins inconspicuous, reticulate.52
52. 003-004

<Leaves>Petiole plus rachis

petiole plus rachis , , ;53
53. 003-001

<Leaves>Petiolule

petiolules , ;54
54. 003-002

<Stems>Hairs

glabrous55
55. 002-001

<Stems>Shape

striate56
56. 002-002

<Thyrses>Axes

axes , slightly angled.57
57. 004-004

<Thyrses>Length

8-18 cm long58
58. 004-002

<Thyrses>Position

axillary on distal portion of the branch59
59. 004-001

<Thyrses>Shape

paniculate60
60. 004-003

Calyx

Calyx -pubescent, ,61
61. 006

Capsules

Capsules not known.62
62. 007

Description

Shrub to 2.5 m tall. Stems glabrous, striate. Leaves paripinnate; petiole plus rachis 2-6.5 cm long, slightly flattened adaxially, striate, puberulent; petiolules ca. 5 mm long, pulvinate at base; leaflets (4) 6, opposite or nearly so, rigid coriaceous, obovate, oblanceolate to nearly elliptic, 2.5-4.5 × 1.2-2.3 cm, brittle, discolorous (abaxial surface drying brownish), adaxially glabrous, abaxially puberulent, especially along midvein, the base obtuse, symmetrical, the apex emarginate or less often rounded, the margins entire, slightly revolute; midvein abaxially prominent, secondary and tertiary veins inconspicuous, reticulate. Thyrses axillary on distal portion of the branch, 8-18 cm long, paniculate; axes ferruginous-pubescent, slightly angled. Flowers in simple dichasia; pedicels ca. 2 mm long, pubescent. Calyx brownish yellow, ferruginous-pubescent, ca. 1 mm long, the lobes ovate, 0.5-0.7 mm long; petals yellowish white, spatulate, ca. 1 mm long, emarginate at apex, lanose mostly along margins; appendages 2, sericeous-tomentose, ca. 1 mm long, supra basal; disc glabrous, pulvinate; stamens 8, 2-2.5 mm long, the filaments lanose on lower half; ovary tomentulose, the style 3-branched. Capsules not known.

Distribution

Guyana present
Known only from the type collection in Guyana.

Flowers

Flowers in simple dichasia;63
63. 005

Habit

Shrub .64
64. 001

Leaves

Leaves paripinnate;65
65. 003

Stems

Stems , .66
66. 002

Thyrses

Thyrses , , ;67
67. 004