Minquartia

<<<Calyx>Ovary>Stigma>Lobe number

3-5-lobed1

1. 005-005-004-001

<<<Calyx>Petals>Lobes>Shape

ovate oblong2

2. 005-003-004-001

<<<Calyx>Stamens>Anthers>Shape

subquadrate-suborbicular3

3. 005-004-003-001

<<<Calyx>Stamens>Filaments>Shape

filiform, adnate to the basal parts of the petals4

4. 005-004-002-001

<<Calyx>Ovary>Hairs

hairy5

5. 005-005-001

<<Calyx>Ovary>Locule number

(3-)4(-5)-locular below, 1-locular above6

6. 005-005-002

<<Calyx>Ovary>Stigma

stigma shortly .7

7. 005-005-004

<<Calyx>Ovary>Style

style very short,8

8. 005-005-003

<<Calyx>Petals>Lobes

lobes ;9

9. 005-003-004

<<Calyx>Petals>Petal number

(4-)5-6(-7)10

10. 005-003-001

<<Calyx>Petals>Shape

connate in the lower half11

11. 005-003-003

<<Calyx>Petals>Texture

fleshy12

12. 005-003-002

<<Calyx>Stamens>Anthers

anthers ;13

13. 005-004-003

<<Calyx>Stamens>Filaments

filaments ,14

14. 005-004-002

<<Calyx>Stamens>Stamen number

generally 10, sometimes 15 (5 episepalous and 10 epipetalous)15

15. 005-004-001

<<Drupes>Endocarp>Texture

crustaceous, tuberculate outside16

16. 006-002-001

<<Drupes>Exocarp>Texture

thin-fleshy17

17. 006-001-001

<<Flowers>Bracts>Shape

ovate18

18. 004-002-001

<<Habit>Juvenile parts>Hairs

covered with a rusty tomentum19

19. 001-003-001

<<Habit>Trunk>Texture

with deep grooves of limited length20

20. 001-002-001

<<Inflorescences>Spikes>Flower number

many21

21. 003-002-001

<Calyx>Ovary

ovary superior, , ,22

22. 005-005

<Calyx>Petals

petals , , ,23

23. 005-003

<Calyx>Shape

cupuliform24

24. 005-001

<Calyx>Stamens

stamens ,25

25. 005-004

<Calyx>Teeth number

5(-6)-denticulate26

26. 005-002

<Drupes>Embryo

embryo minute in top of the copious endosperm, the latter containing amylum, but no fatty substances.27

27. 006-003

<Drupes>Endocarp

endocarp ,28

28. 006-002

<Drupes>Exocarp

with exocarp29

29. 006-001

<Flowers>Bracts

each flower subtended by a minute caducous bract30

30. 004-002

<Flowers>Fascicle number

2-5-fascicled31

31. 004-001

<Habit>Juvenile parts

young parts .32

32. 001-003

<Habit>Sap

milky juice in bark and leaves33

33. 001-001

<Habit>Trunk

trunk ;34

34. 001-002

<Inflorescences>Position

axillary35

35. 003-001

<Inflorescences>Spikes

pedunculate spikes, rather short, generally simple, rarely with few and short branches, flowered36

36. 003-002

<Leaves>Secretory structures

with schizogenous secretory cavities with resinous contents and lactifers, often with spicular cells37

37. 002-001

Calyx

Calyx , , small, persistent, not accrescent;38

38. 005

Description

Trees with milky juice in bark and leaves; trunk with deep grooves of limited length; young parts covered with a rusty tomentum. Leaves persistent, with schizogenous secretory cavities with resinous contents and lactifers, often with spicular cells. Inflorescences axillary, pedunculate spikes, rather short, generally simple, rarely with few and short branches, many flowered. Flowers hypogynous, small, subsessile, 2-5-fascicled along rachis, each flower subtended by a minute ovate caducous bract. Calyx cupuliform, 5(-6)-denticulate, small, persistent, not accrescent; petals (4-)5-6(-7), fleshy, connate in the lower half, lobes ovate oblong; stamens generally 10, sometimes 15 (5 episepalous and 10 epipetalous), filaments filiform, adnate to the basal parts of the petals, anthers subquadrate-suborbicular; ovary superior, hairy, (3-)4(-5)-locular below, 1-locular above, style very short, stigma shortly 3-5-lobed. Drupe with thin-fleshy exocarp, endocarp crustaceous, tuberculate outside, embryo minute in top of the copious endosperm, the latter containing amylum, but no fatty substances.

Distribution

C and northern South America present

Monotypic, in C and northern South America.

Drupes

Drupe ,39

39. 006

Flowers

Flowers hypogynous, small, subsessile, along rachis, .40

40. 004

Habit

Trees with ;41

41. 001

Inflorescences

Inflorescences , .42

42. 003

Leaves

Leaves persistent, .43

43. 002

Wood

Vessels diffuse, solitary (9-49%) and in radial multiples of 2-4, round, oval or angular, 14-42 per sq. mm, diameter 63-132 μm. Vessel-member length: 854-1365 μm. Perforations scalariform with 4-9 bars per perfora- tion. Intervascular pits alternate, predominantly angular, partly round or oval, 6-13 μm. Vessel-ray and vessel-parenchyma pits large and simple, forming a scalariform or reticulate pattern. Thin-walled tyloses frequently present.
Rays of Kribs' heterogeneous type I, uniseriate or with very short multise- riate central parts of 2-3 cells wide, 13-21 per mm, up to 2166 μm high. Perforated ray cells not observed.
Parenchyma rather scanty to fairly common, predominantly apotracheal,diffuse and in small aggregates, partly scanty paratracheal, in strands of 6-13 cells.
Ground tissue composed of very thick-walled libriform fibres, lumen 16-27 μm. Minutely bordered pits with slit-like apertures, mainly confined to the radial walls. Length: 1474-2355 μm.
Crystals solitary rhomboidal, infrequently fragmented, in chambered ray or axial parenchyma cells.

Wood observation species

M. guianensis

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