Eichhornia paniculata

<<<Capsules>Seeds>Wings>Shape

longitudinal1

1. 006-002-003-002

<<<Capsules>Seeds>Wings>Wing number

10-122

2. 006-002-003-001

<<<Flowers>Ovary>Stigma>Hairs

pilose3

3. 005-005-002-002

<<<Flowers>Ovary>Stigma>Lobe number

3-lobed4

4. 005-005-002-001

<<<Flowers>Stamens>Anthers>Length

0.9-1.3 mm long5

5. 005-004-003-001

<<<Flowers>Stamens>Lower stamens>Length

5.1-8.5 mm long6

6. 005-004-002-001

<<<Flowers>Stamens>Upper stamens>Length

2.5-3.5 mm long7

7. 005-004-001-001

<<<Flowers>Tepals>Upper tepals>Colour

with two yellow spots toward the base8

8. 005-003-003-001

<<<Inflorescences>Spathe>Apex>Shape

acuminate9

9. 004-003-003-001

<<<Sessile leaves>Petiolated leaves>Blade>Length

7.5-15 cm long10

10. 003-002-001-002

<<<Sessile leaves>Petiolated leaves>Blade>Shape

cordate, acuminate to acute at apex11

11. 003-002-001-001

<<<Sessile leaves>Petiolated leaves>Blade>Width

3.5-9 cm wide12

12. 003-002-001-003

<<<Vegetative stems>Flowering stems>Upper internodes>Length

0.8-2.7 cm long13

13. 002-001-004-001

<<Capsules>Seeds>Length

0.6-1.0 mm long14

14. 006-002-001

<<Capsules>Seeds>Width

0.6-0.8 mm wide15

15. 006-002-002

<<Capsules>Seeds>Wings

with wings16

16. 006-002-003

<<Flowers>Ovary>Length

1-3 mm long17

17. 005-005-001

<<Flowers>Ovary>Stigma

stigma , ;18

18. 005-005-002

<<Flowers>Stamens>Anthers

anthers ;19

19. 005-004-003

<<Flowers>Stamens>Lower stamens

lower stamens20

20. 005-004-002

<<Flowers>Stamens>Upper stamens

upper stamens21

21. 005-004-001

<<Flowers>Tepals>Length

12-15 mm long22

22. 005-003-002

<<Flowers>Tepals>Shape

acute to obtuse at apex23

23. 005-003-001

<<Flowers>Tepals>Upper tepals

the central upper tepal24

24. 005-003-003

<<Flowers>Tube>Length

8-10 mm long25

25. 005-002-001

<<Inflorescences>Peduncle>Hairs

sparsely glandular-pubescent26

26. 004-002-001

<<Inflorescences>Peduncle>Length

11.5-17.5 cm long27

27. 004-002-002

<<Inflorescences>Spathe>Apex

the apex .28

28. 004-003-003

<<Inflorescences>Spathe>Length

13-35 mm long29

29. 004-003-002

<<Inflorescences>Spathe>Shape

linear30

30. 004-003-001

<<Sessile leaves>Petiolated leaves>Blade

the blade , , ;31

31. 003-002-001

<<Sessile leaves>Petiole>Length

up to 60 cm32

32. 003-003-001

<<Vegetative stems>Flowering stems>Growth form

erect33

33. 002-001-002

<<Vegetative stems>Flowering stems>Hairs

glabrous34

34. 002-001-001

<<Vegetative stems>Flowering stems>Height

up to 55 cm tall35

35. 002-001-003

<<Vegetative stems>Flowering stems>Upper internodes

the upper internode36

36. 002-001-004

<Capsules>Length

6-8 mm long37

37. 006-001

<Capsules>Seeds

seeds , .38

38. 006-002

<Flowers>Colour

blue or white39

39. 005-001

<Flowers>Ovary

ovary ,40

40. 005-005

<Flowers>Stamens

, ,41

41. 005-004

<Flowers>Style

tristylous.42

42. 005-006

<Flowers>Tepals

tepals , , ;43

43. 005-003

<Flowers>Tube

tube ,44

44. 005-002

<Inflorescences>Flower number

50-100 flowers, usually fewer in number on young plants45

45. 004-001

<Inflorescences>Peduncle

peduncle , ;46

46. 004-002

<Inflorescences>Spathe

spathe , ,47

47. 004-003

<Sessile leaves>Petiolated leaves

petiolate leaves emersed,48

48. 003-002

<Sessile leaves>Petiole

petiole .49

49. 003-003

<Sessile leaves>Shape

linear to oblanceolate, acuminate at apex50

50. 003-001

<Vegetative stems>Flowering stems

flowering stem , , emersed, , .51

51. 002-001

Capsules

Capsule ;52

52. 006

Description

Annual, rooted in mud. Vegetative stem short; flowering stem glabrous, erect, emersed, up to 55 cm tall, the upper internode 0.8-2.7 cm long. Sessile leaves forming a basal rosette, linear to oblanceolate, acuminate at apex; petiolate leaves emersed, the blade cordate, acuminate to acute at apex, 7.5-15 cm long, 3.5-9 cm wide; petiole up to 60 cm. Inflorescence a panicle with 50-100 flowers, usually fewer in number on young plants, developing over several days; peduncle sparsely glandular-pubescent, 11.5-17.5 cm long; spathe linear, 13-35 mm long, the apex acuminate. Flowers blue or white, tube 8-10 mm long, tepals acute to obtuse at apex, 12-15 mm long, the central upper tepal with two yellow spots toward the base; upper stamens 2.5-3.5 mm long, lower stamens 5.1-8.5 mm long, anthers 0.9-1.3 mm long; ovary 1-3 mm long, stigma 3-lobed, pilose; tristylous. Capsule 6-8 mm long; seeds 0.6-1.0 mm long, 0.6-0.8 mm widewith 10-12longitudinal wings.

Distribution

Botanic Garden in Georgetown cultivated, Guyana present, Jamaica present, Nicagarua present, Northeastern Brazil present, Southern America: Paraguay (Paraguay present)

Northeastern Brazil with isolated populations in Nicagarua, Jamaica, Guyana and Paraguay; 19 collections studied, 5 from Guyana, probably as escapes from the Botanic Garden in Georgetown

Flowers

Flowers ,53

53. 005

Habit

Annual, rooted in mud.54

54. 001

Individuals Association

Guyana, 8 km south of Georgetown, Horn 4547 Guyana, Georgetown, in Botanic Garden, Hitchcock 16618

Inflorescences

Inflorescence a panicle with , developing over several days;55

55. 004

Sessile leaves

Sessile leaves forming a basal rosette, ;56

56. 003

Vegetative stems

Vegetative stem short;57

57. 002

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