Cathedra

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Cathedra

<<<Calyx>Ovary>Shape>Lobe number

3-lobed1
1. 003-008-001-002

<<<Calyx>Ovary>Shape>Sulcus number

6-12-sulcate2
2. 003-008-001-001

<<<Calyx>Petals>Shape>Texture

fleshy3
3. 003-004-002-001

<<<Calyx>Stamens>Filaments>Shape

flat4
4. 003-006-003-001

<<Calyx>Anthers>Shape

almost tetragonous5
5. 003-007-001

<<Calyx>Disk>Shape

much accrescent after anthesis to cover the fruit almost completely6
6. 003-005-002

<<Calyx>Disk>Texture

fleshy7
7. 003-005-001

<<Calyx>Ovary>Locule number

1-locular above, 2-locular below8
8. 003-008-002

<<Calyx>Ovary>Ovule number

single9
9. 003-008-003

<<Calyx>Ovary>Shape

conical, , attenuate to a short cylindric style and a slightly stigma10
10. 003-008-001

<<Calyx>Petals>Petal number

5-6(-7)11
11. 003-004-001

<<Calyx>Petals>Shape

triangular-lanceolate, , concave adaxially in lower part to shelter the anthers, barbate above middle adaxially12
12. 003-004-002

<<Calyx>Stamens>Filaments

filaments , thickish;13
13. 003-006-003

<<Calyx>Stamens>Relative dimensions

half as long as petals14
14. 003-006-002

<<Calyx>Stamens>Stamen number

5-615
15. 003-006-001

<<Flowers>Fascicles>Position

axillary16
16. 002-001-001

<<Fruits>Endocarp>Texture

crustaceous17
17. 004-001-001

<<Fruits>Endosperm>Texture

fleshy18
18. 004-002-001

<Calyx>Anthers

anthers ;19
19. 003-007

<Calyx>Disk

disc hypogynous, free, , ;20
20. 003-005

<Calyx>Ovary

ovary very shortly stipitate, , , with a ovule pendent from an axile placenta into each cell.21
21. 003-008

<Calyx>Petals

petals , free, ;22
22. 003-004

<Calyx>Shape

cup-shaped23
23. 003-001

<Calyx>Stamens

stamens , epipetalous, ,24
24. 003-006

<Calyx>Teeth number

5-6-dentate25
25. 003-003

<Calyx>Texture

fleshy26
26. 003-002

<Flowers>Bracts

connate bracts forming a small cupular persistent epicalyx around the pedicel.27
27. 002-003

<Flowers>Fascicles

aggregate in fascicles28
28. 002-001

<Flowers>Pedicels

pedicels (very) short;29
29. 002-002

<Fruits>Embryo

embryo minute, at apex of the albumen.30
30. 004-003

<Fruits>Endocarp

endocarp ,31
31. 004-001

<Fruits>Endosperm

endosperm , containing much amylum and very little or no fatty substances,32
32. 004-002

Calyx

Calyx , , obsoletely , small, not or hardly accrescent towards fructification;33
33. 003

Description

Shrubs or trees. Flowers small, aggregate in axillary fascicles, pedicels (very) short; connate bracts forming a small cupular persistent epicalyx around the pedicel. Calyx cup-shaped, fleshy, obsoletely 5-6-dentate, small, not or hardly accrescent towards fructification; petals 5-6(-7), free, triangular-lanceolate, fleshy, concave adaxially in lower part to shelter the anthers, barbate above middle adaxially; disc hypogynous, free, fleshy, much accrescent after anthesis to cover the fruit almost completely; stamens 5-6, epipetalous, half as long as petals, filaments flat, thickish; anthers almost tetragonous; ovary very shortly stipitate, conical, 6-12-sulcate, attenuate to a short cylindric style and a slightly 3-lobed stigma, 1-locular above, 2-locular below, with a single ovule pendent from an axile placenta into each cell. Fruit a pseudo-drupe, subtended by the thickened upper part of the pedicel with the epicalyx and calyx, covered halfway to almost completely by the accrescent pericarp-like disc, endocarp crustaceous, endosperm fleshy, containing much amylum and very little or no fatty substances, embryo minute, at apex of the albumen.

Distribution

Guyana present present, Neotropics present, Southern America: Colombia (Colombia present); Peru (Peru present); Venezuela (Venezuela present)
5 species in the neotropics: Colombia, Venezuela, Peru, Guyana, Brazil; 1 in Guyana.

Flowers

Flowers small, ,34
34. 002

Fruits

Fruit a pseudo-drupe, subtended by the thickened upper part of the pedicel with the epicalyx and calyx, covered halfway to almost completely by the accrescent pericarp-like disc,35
35. 004

Habit

Shrubs or trees.36
36. 001

Wood

Vessels diffuse, solitary (10-65%) and in radial multiples of 2-4, round, oval or angular, 11-45 per sq. mm, diameter 58-104 μm. Vessel-member length: 306-390 μm. Perforations simple. Intervascular pits alternate, round to polygonal, 3-5 μm. Vessel-ray and vessel-parenchyma pits of two types: half-bordered diffuse to alternate (similar in shape and size to intervascular pits) and large and simple. Thin-walled or sclerotic tyloses infrequently present. Vascular tracheids associated with vessel multiples, sometimes integrating with narrow vessel elements, fairly common to abundant.
Rays of Kribs' heterogeneous type III tending to homogeneous, predomi- nantly uni-seriate, infrequently with short biseriate parts, 20-22 per mm, up to 1168 μm high. Perforated ray cells present in all specimens.
Parenchyma moderately abundant, predominantly apotracheal, diffuse or in small aggregates, partly scanty paratracheal, in strands of 4-8 cells.
Ground tissue composed of very tick-walled libriform fibres, lumen 16-24 μm. Minutely bordered pits with slit-like apertures mainly confined to the radial walls. Length: 1231-1723 μm.
Crystals solitary rhomboidal, in chambered or non-chambered ray and axial parenchyma cells, absent in some specimens.

Wood observation species

C. acuminata, C. rubricaulis