Poraqueiba

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Poraqueiba

Content

<<<Flowers>Calyx>Lobes>Lobe number

51
1. 004-003-003-001

<<<Flowers>Ovary>Stigma>Shape

capitate2
2. 004-006-005-001

<<<Flowers>Petals>Midrib>Hairs

partly pubescent inside3
3. 004-004-004-002

<<<Flowers>Petals>Midrib>Shape

prominent, longitudinally furrowed4
4. 004-004-004-001

<<<Flowers>Stamens>Anthers>Shape

oblong5
5. 004-005-004-001

<<<Flowers>Stamens>Connective>Shape

broad, tapering into inflexed top6
6. 004-005-005-001

<<<Flowers>Stamens>Filaments>Shape

flattened, broadened at middle, abruptly narrowed towards anthers7
7. 004-005-003-002

<<<Flowers>Stamens>Filaments>Texture

fleshy8
8. 004-005-003-001

<<<Flowers>Stamens>Thecae>Dehiscence

laterally dehiscent9
9. 004-005-006-002

<<<Flowers>Stamens>Thecae>Position

lateral on connective10
10. 004-005-006-001

<<Flowers>Bracts>Bract number

311
11. 004-002-001

<<Flowers>Bracts>Hairs

sericeous12
12. 004-002-002

<<Flowers>Calyx>Hairs

sericeous13
13. 004-003-002

<<Flowers>Calyx>Lobes

with imbricate lobes14
14. 004-003-003

<<Flowers>Calyx>Texture

fleshy15
15. 004-003-001

<<Flowers>Ovary>Cell number

1-celled16
16. 004-006-003

<<Flowers>Ovary>Hairs

glabrous17
17. 004-006-002

<<Flowers>Ovary>Shape

globose18
18. 004-006-001

<<Flowers>Ovary>Stigma

stigma .19
19. 004-006-005

<<Flowers>Ovary>Style

style short,20
20. 004-006-004

<<Flowers>Petals>Apex

apex inflexed,21
21. 004-004-003

<<Flowers>Petals>Margins

margins incurved,22
22. 004-004-002

<<Flowers>Petals>Midrib

midrib and ;23
23. 004-004-004

<<Flowers>Petals>Texture

fleshy24
24. 004-004-001

<<Flowers>Stamens>Anthers

anthers , basifixed,25
25. 004-005-004

<<Flowers>Stamens>Connective

connective ,26
26. 004-005-005

<<Flowers>Stamens>Filaments

filaments , ,27
27. 004-005-003

<<Flowers>Stamens>Hairs

glabrous28
28. 004-005-002

<<Flowers>Stamens>Stamen number

529
29. 004-005-001

<<Flowers>Stamens>Thecae

thecae , ;30
30. 004-005-006

<<Fruits>Endocarp>Texture

woody31
31. 005-003-001

<<Fruits>Mesocarps>Oil

containing oil32
32. 005-002-002

<<Fruits>Mesocarps>Texture

fleshy33
33. 005-002-001

<<Fruits>Seeds>Shape

curved or nearly straight34
34. 005-004-001

<Flowers>Articulation

articulate below the calyx35
35. 004-001

<Flowers>Bracts

subtended by imbricate bracts36
36. 004-002

<Flowers>Calyx

calyx , , ;37
37. 004-003

<Flowers>Ovary

ovary , , ,38
38. 004-006

<Flowers>Petals

petals free, ,39
39. 004-004

<Flowers>Stamens

stamens , ,40
40. 004-005

<Fruits>Endocarp

endocarp ;41
41. 005-003

<Fruits>Mesocarps

mesocarp , ,42
42. 005-002

<Fruits>Seeds

seed with embryo minute, .43
43. 005-004

<Fruits>Shape

ovoid to ellipsoid, somewhat oblique44
44. 005-001

<Inflorescences>Branches

branched from base45
45. 003-002

<Inflorescences>Position

axillary46
46. 003-001

<Leaves>Hairs

glabrescent47
47. 002-001

Description

Tall trees. Leaves entire, glabrescent. Inflorescences axillary panicles, branched from base. Flowers small, perfect, sessile or subsessile, articulate below the calyx, subtended by 3 imbricate sericeous bracts; calyx fleshy, sericeous, with 5 imbricate lobes; petals free, fleshy, margins incurved, apex inflexed, midrib prominent, longitudinally furrowed and partly pubescent inside; stamens 5, glabrous, filaments fleshy, flattened, broadened at middle, abruptly narrowed towards anthers, anthers oblong, basifixed, connective broad, tapering into inflexed top, thecae lateral on connective, laterally dehiscent; ovary globose, glabrous, 1-celled, style short, stigma capitate. Fruit a drupe, ovoid to ellipsoid, somewhat oblique, mesocarp fleshy, containing oil, endocarp woody; seed with embryo minute, curved or nearly straight.

Distribution

Guianas present, Southern America: Panamá (Panamá present); Peru (Peru present)
3 species in Panama, Peru, and Brazil, 1 of which in the Guianas.

Flowers

Flowers small, perfect, sessile or subsessile, , ;48
48. 004

Fruits

Fruit a drupe, ,49
49. 005

Habit

Tall trees.50
50. 001

Inflorescences

Inflorescences panicles, .51
51. 003

Leaves

Leaves entire, .52
52. 002

Wood

Vessels diffuse, solitary, round to oval, 7-10(5-12) per sq. mm, diameter 115-150(90-160) μm. Vessel-member length: 1896-2038(1176-2558) μm. Perforations scalariform, 12-25(19-31) bars per plate. Inter- vascular pits alternate, round, 5-6 μm in diameter. Vessel-ray pits round, elongate and scalariform. Vessel-parenchyma pits elongate. Tyloses sometimes present.
Rays in two types, 6-7 per mm, uni-biseriate, over 2300 μm (= 100 cells) high, heterogeneous, composed of square and procumbent and some upright cells; and multiseriate, 11-15 cells wide, over 7500-12000 μm (=over 250-400 cells) high, heterogeneous, composed of procumbent and square cells. Rhombic crystals common.
Parenchyma apotracheal in short, wavy, tangential bands, one cell wide, and diffuse, and some scanty paratracheal cells. Strands 8-16 cells. Rhombic crystals very scarce.
Fibres non-septate, thick-walled, lumen 5-8 μm, walls 10-13 μm. Pits bordered, on radial and tangential walls, 6-10 μm. Length: 2665(2087-3469) μm. F/V ratio: 1.40-1.45.

Wood observation species

P. guianensis