Pentascyphus

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Pentascyphus

<<<<Flowers>Petals>Appendages>Projection>Projection number

21
1. 005-002-002-001-001

<<<Flowers>Petals>Appendages>Projection

with short marginal projections2
2. 005-002-002-001

<<Flowers>Disk>Hairs

sericeous3
3. 005-003-001

<<Flowers>Disk>Lobe number

7-8-lobed4
4. 005-003-002

<<Flowers>Ovary>Carpel number

3-carpellate5
5. 005-006-001

<<Flowers>Ovary>Hairs

hirsute6
6. 005-006-002

<<Flowers>Ovary>Ovule number per carpel

a single ovule per carpel7
7. 005-006-003

<<Flowers>Petals>Appendages

with an adnate appendage forming a pocket, for most of its length, the whole structure8
8. 005-002-002

<<Flowers>Petals>Petal number

59
9. 005-002-001

<<Flowers>Sepals>Sepal number

510
10. 005-001-001

<<Flowers>Stamens>Stamen number

811
11. 005-004-001

<Flowers>Disk

disc pentagonal, , ;12
12. 005-003

<Flowers>Ovary

ovary , , with .13
13. 005-006

<Flowers>Petals

petals , ;14
14. 005-002

<Flowers>Pollen

pollen syncolporate or parasyncolporate, rugulate;15
15. 005-005

<Flowers>Sepals

sepals , equal, free, imbricate;16
16. 005-001

<Flowers>Stamens

stamens , of equal length;17
17. 005-004

<Fruits>Lobe number

trilobed18
18. 006-002

<Fruits>Locule number

trilocular19
19. 006-001

<Inflorescences>Position

distal or axillary20
20. 004-001

<Leaves>Distal leaflets

distal leaflet rudimentary.21
21. 003-002

<Leaves>Leaflets

leaflets alternate, entire;22
22. 003-001

Description

Trees or shrubs. Stipules wanting. Leaves alternate, paripinnate; leaflets alternate, entire; distal leaflet rudimentary. Inflorescences distal or axillary thyrses. Flowers actinomorphic, bisexual or functionally unisexual; sepals 5, equal, free, imbricate; petals 5, with an adnate appendage forming a pocket, for most of its length, the whole structure with 2 short marginal projections; disc pentagonal, sericeous, 7-8-lobed; stamens 8, of equal length; pollen syncolporate or parasyncolporate, rugulate; ovary 3-carpellate, hirsute, with a single ovule per carpel. Fruit a trilocular, trilobed capsule.

Distribution

Guianas present, Southern America: Brazil North (Amazonas present, Pará present); Brazil Northeast (Maranhao present)
A single species occurring in the Guianas and Brazil (Amazonas, Maranhão, and Pará).

Flowers

Flowers actinomorphic, bisexual or functionally unisexual;23
23. 005

Fruits

Fruit a , capsule.24
24. 006

Habit

Trees or shrubs.25
25. 001

Inflorescences

Inflorescences thyrses.26
26. 004

Leaves

Leaves alternate, paripinnate;27
27. 003

Notes

Pentascyphus is indistinguishable from Cupania except by its petal appendage (simple and connate to the petal along its margins forming a pocket), and its leaflets with entire margins. Whether these features should warrant generic distinction or not is something to be tested by the aid of molecular tools. In the absence of molecular data, I differ to make any change on the taxonomic status of Pentascyphus.

Stipules

Stipules wanting.28
28. 002