Thunbergia alata var. alata

<<<<Calyx>Corolla>Lobes>Shape>Dimensions

7.5-15 x 6-22 mm1

1. 005-004-006-001-001

<<<Calyx>Corolla>Limbs>Diameter

20-43 mm in diam.2

2. 005-004-005-001

<<<Calyx>Corolla>Lobes>Shape

obovate to obdeltate, , apically truncate3

3. 005-004-006-001

<<<Calyx>Stamens>Longer anther pair>Length

1-1.6 mm long4

4. 005-005-002-001

<<<Calyx>Stamens>Shorter anther pair>Theca number

15

5. 005-005-003-001

<<<Calyx>Stamens>Thecae>Hairs

pubescent with beaded papilla-like trichomes along line of dehiscence and at base6

6. 005-005-004-002

<<<Calyx>Stamens>Thecae>Length

3-5 mm long7

7. 005-005-004-001

<<<Calyx>Style>Stigma>Length

1.5-2 mm long8

8. 005-006-003-002

<<<Calyx>Style>Stigma>Shape

± funnelform9

9. 005-006-003-001

<<<Capsules>Seeds>Pores>Hairs

covered with appressed, scalelike trichomes10

10. 006-006-004-001

<<<Inflorescences>Bracteoles>Shape>Dimensions

11-25 x 4-15 mm11

11. 004-002-001-001

<<<Petiole>Blade>Margins>Margin type

entire to undulate or shallowly and irregularly, coarsely dentate12

12. 003-003-004-001

<<Calyx>Corolla>Colour

yellow or orange (sometimes white) with a dark purple, glandular spot in throat13

13. 005-004-001

<<Calyx>Corolla>Hairs

externally sparsely and inconspicuously pubescent14

14. 005-004-003

<<Calyx>Corolla>Length

25-40 mm long15

15. 005-004-002

<<Calyx>Corolla>Limbs

limb subregular, ,16

16. 005-004-005

<<Calyx>Corolla>Lobes

lobes ;17

17. 005-004-006

<<Calyx>Corolla>Tube

tube shorter or slightly longer than bracteoles,18

18. 005-004-004

<<Calyx>Lobes>Hairs

pubescent19

19. 005-003-002

<<Calyx>Lobes>Shape

subulate20

20. 005-003-001

<<Calyx>Stamens>Length

7-9 mm long21

21. 005-005-001

<<Calyx>Stamens>Longer anther pair

anthers of longer pair with both thecae appendaged at base with a curved, awnlike appendage of ,22

22. 005-005-002

<<Calyx>Stamens>Shorter anther pair

anthers of shorter pair with theca appendaged at base,23

23. 005-005-003

<<Calyx>Stamens>Thecae

thecae , subequal to unequal in size, subparallel, ;24

24. 005-005-004

<<Calyx>Style>Hairs

glabrous25

25. 005-006-002

<<Calyx>Style>Length

12 mm long26

26. 005-006-001

<<Calyx>Style>Stigma

stigma lobes , superposed, .27

27. 005-006-003

<<Capsules>Beak>Length

9-15 mm long28

28. 006-005-001

<<Capsules>Seeds>Diameter

4-5 mm in diam.29

29. 006-006-003

<<Capsules>Seeds>Pores

with a prominent, pore on flat side,30

30. 006-006-004

<<Capsules>Seeds>Seed number

231

31. 006-006-001

<<Capsules>Seeds>Shape

subspheric32

32. 006-006-002

<<Inflorescences>Bracteoles>Hairs

pubescent like leaves33

33. 004-002-002

<<Inflorescences>Bracteoles>Shape

lance-ovate to ovate, , acute to acuminate at apex, rounded to truncate to cordate at base34

34. 004-002-001

<<Inflorescences>Peduncle>Hairs

stigose pubescent35

35. 004-001-003

<<Inflorescences>Peduncle>Length

3-9 cm long36

36. 004-001-001

<<Inflorescences>Peduncle>Relative dimensions

mostly longer than petioles37

37. 004-001-002

<<Petiole>Blade>Dimensions

2-13.5 x 0.9-8.5 mm38

38. 003-003-001

<<Petiole>Blade>Hairs

pubescent on both surfaces39

39. 003-003-003

<<Petiole>Blade>Margins

margin ;40

40. 003-003-004

<<Petiole>Blade>Shape

acute at apex, cordate-hastate at base and decurrent along petiole as a narrow wing41

41. 003-003-002

<Calyx>Corolla

corolla , , with glands,42

42. 005-004

<Calyx>Length

2-4.5 mm long43

43. 005-001

<Calyx>Lobe number

10-16-lobed44

44. 005-002

<Calyx>Lobes

lobes , unequal, ;45

45. 005-003

<Calyx>Stamens

stamens didynamous, ,46

46. 005-005

<Calyx>Style

style , ,47

47. 005-006

<Capsules>Beak

abruptly contracted into a stout, compressed beak ;48

48. 006-005

<Capsules>Diameter

5-10 mm in diam.49

49. 006-004

<Capsules>Hairs

densely pubescent50

50. 006-002

<Capsules>Length

14-23 mm long51

51. 006-001

<Capsules>Seeds

seeds , , , .52

52. 006-006

<Capsules>Shape

body subglobose53

53. 006-003

<Inflorescences>Bracteoles

bracteoles , .54

54. 004-002

<Inflorescences>Peduncle

peduncle , , ;55

55. 004-001

<Petiole>Blade

blade sagittate, , , ,56

56. 003-003

<Petiole>Length

1.0- 8.5 cm long57

57. 003-002

<Petiole>Relative dimensions

as long as leaf blade or shorter58

58. 003-001

<Petiole>Veins

major venation palmate.59

59. 003-004

<Stems>Hairs

pubescent with strigose trichomes60

60. 002-002

<Stems>Shape

subquadrate to ± flattened61

61. 002-001

Calyx

Calyx , ,62

62. 005

Capsules

Capsule , ,
, ,63

63. 006

Description

Herbaceous trailing or climbing vine. Stem subquadrate to ± flattened, pubescent with strigose trichomes. Petiole as long as leaf blade or shorter, 1.0- 8.5 cm long, alate; blade sagittate, 2-13.5 x 0.9-8.5 mm, acute at apex, cordate-hastate at base and decurrent along petiole as a narrow wing, pubescent on both surfaces, margin entire to undulate or shallowly and irregularly, coarsely dentate; major venation palmate. Inflorescence solitary dichasia in leaf axils; peduncle 3-9 cm long, mostly longer than petioles, stigose pubescent; bracteoles lance-ovate to ovate, 11-25 x 4-15 mm, acute to acuminate at apex, rounded to truncate to cordate at base, pubescent like leaves. Calyx 2-4.5 mm long, 10-16-lobed, lobes subulate, unequal, pubescent; corolla yellow or orange (sometimes white) with a dark purple, glandular spot in throat, 25-40 mm long, externally sparsely and inconspicuously pubescent with glands, tube shorter or slightly longer than bracteoles, limb subregular, 20-43 mm in diam., lobes obovate to obdeltate, 7.5-15 x 6-22 mm, apically truncate; stamens didynamous, 7-9 mm long, anthers of longer pair with both thecae appendaged at base with a curved, awnlike appendage of 1-1.6 mm long, anthers of shorter pair with 1 theca appendaged at base, thecae 3-5 mm long, subequal to unequal in size, subparallel, pubescent with beaded papilla-like trichomes along line of dehiscence and at base; style 12 mm long, glabrous, stigma lobes ± funnelform, superposed, 1.5-2 mm long. Capsule 14-23 mm long, densely pubescent, body subglobose, 5-10 mm in diam., abruptly contracted into a stout, compressed beak 9-15 mm long; seeds 2, subspheric, 4-5 mm in diam., with a prominent, pore on flat side, covered with appressed, scalelike trichomes.

Distribution

Guianas cultivated, eastern and southern Africa, tropical America cultivated

A native of eastern and southern Africa, cultivated as ornamental and naturalized as ruderal throughout tropical America; 126 collections studied of which 13 from the Guianas (GU: 7; SU: 6).

Habit

Herbaceous trailing or climbing vine.64

64. 001

Individuals Association

Guyana, Hoffman 2484 Guyana, Hitchcock 16653 Prévost 3851 Suriname, Hekking 1176

Inflorescences

Inflorescence solitary dichasia in leaf axils;65

65. 004

Petiole

Petiole , , alate;66

66. 003

Stems

Stem , .67

67. 002

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