Rhoogeton viviparus

<<<Calyx>Corolla>Base>Width

0.2-0.3 cm wide1

1. 005-005-004-001

<<<Calyx>Corolla>Limbs>Width

1.2-2.5 cm wide2

2. 005-005-006-001

<<<Calyx>Corolla>Lobes>Dimensions

0.4-1 x 0.4-1 cm3

3. 005-005-007-003

<<<Calyx>Corolla>Lobes>Growth form

spreading to patent4

4. 005-005-007-001

<<<Calyx>Corolla>Lobes>Shape

rounded5

5. 005-005-007-002

<<<Calyx>Corolla>Margins>Margin type

subcrenate-serrate6

6. 005-005-008-001

<<<Calyx>Corolla>Throat>Hairs

outside sparsely strigillose, inside sparsely pilose towards mouth7

7. 005-005-005-002

<<<Calyx>Corolla>Throat>Width

0.5-0.7 cm wide8

8. 005-005-005-001

<<<Calyx>Corolla>Tube>Length

1.8-2.8 cm long9

9. 005-005-003-001

<<<Calyx>Ovary>Stigma>Lobe number

2-lobed10

10. 005-007-005-001

<<<Calyx>Ovary>Style>Hairs

sparsely pubescent11

11. 005-007-004-002

<<<Calyx>Ovary>Style>Length

ca. 2 cm long12

12. 005-007-004-001

<<<Leaves>Blade>Base>Hairs

above sparsely strigillose to glabrous, below strigillose, especially on veins13

13. 003-002-006-002

<<<Leaves>Blade>Base>Shape

rounded or cuneate14

14. 003-002-006-001

<<<Leaves>Blade>Margins>Margin type

biserrate-dentate15

15. 003-002-004-001

<<Calyx>Apex>Hairs

outside sparsely strigillose, inside sparsely strigillose16

16. 005-004-001

<<Calyx>Corolla>Base

base spurred, , middle slightly ventricose,17

17. 005-005-004

<<Calyx>Corolla>Colour

red-scarlet to orange-rose outside18

18. 005-005-001

<<Calyx>Corolla>Length

2.5-3.7 cm long19

19. 005-005-002

<<Calyx>Corolla>Limbs

limb ,20

20. 005-005-006

<<Calyx>Corolla>Lobes

lobes subequal, , , ,21

21. 005-005-007

<<Calyx>Corolla>Margins

margin ;22

22. 005-005-008

<<Calyx>Corolla>Throat

throat slightly contracted, , ,23

23. 005-005-005

<<Calyx>Corolla>Tube

tube trumpet-shaped, ,24

24. 005-005-003

<<Calyx>Lobes>Dimensions

0.6-1 x 0.15-0.3 cm25

25. 005-002-004

<<Calyx>Lobes>Dorsal lobes

dorsal lobe smaller and curved around spur26

26. 005-002-002

<<Calyx>Lobes>Lobe number

427

27. 005-002-001

<<Calyx>Lobes>Shape

all oblong28

28. 005-002-003

<<Calyx>Margins>Margin type

entire or sparsely toothed29

29. 005-003-001

<<Calyx>Ovary>Dimensions

0.3-0.4 x 0.2-0.25 cm30

30. 005-007-002

<<Calyx>Ovary>Hairs

pubescent31

31. 005-007-003

<<Calyx>Ovary>Shape

ovoid32

32. 005-007-001

<<Calyx>Ovary>Stigma

stigma .33

33. 005-007-005

<<Calyx>Ovary>Style

style , ,34

34. 005-007-004

<<Calyx>Stamens>Relative distance

adnate for 0.1-0.2 cm to base of corolla tube35

35. 005-006-001

<<Flowers>Pedicels>Hairs

strigillose36

36. 004-003-002

<<Flowers>Pedicels>Length

0.5-2 cm long37

37. 004-003-001

<<Flowers>Peduncle>Hairs

sparsely strigillose at base, glabrescent above38

38. 004-002-002

<<Flowers>Peduncle>Length

7-38 cm long39

39. 004-002-001

<<Leaves>Blade>Apex

apex acute to acuminate,40

40. 003-002-005

<<Leaves>Blade>Base

base , .41

41. 003-002-006

<<Leaves>Blade>Dimensions

3.5-18.5 x 2-8 cm42

42. 003-002-003

<<Leaves>Blade>Margins

margin , occasionally producing marginal bulbils,43

43. 003-002-004

<<Leaves>Blade>Shape

ovate or oblong-ovate44

44. 003-002-002

<<Leaves>Blade>Texture

papyraceous when dry45

45. 003-002-001

<<Leaves>Petiole>Hairs

strigillose46

46. 003-001-002

<<Leaves>Petiole>Length

0.7-18 cm long47

47. 003-001-001

<Calyx>Apex

apex acute to acuminate, ;48

48. 005-004

<Calyx>Colour

green to reddish49

49. 005-001

<Calyx>Corolla

corolla oblique in calyx, , ,50

50. 005-005

<Calyx>Lobes

lobes free, lobes subequal, , , ,51

51. 005-002

<Calyx>Margins

margin ,52

52. 005-003

<Calyx>Ovary

ovary , , ,53

53. 005-007

<Calyx>Stamens

stamens included, ;54

54. 005-006

<Flowers>Flower number per inflorescence

1-655

55. 004-001

<Flowers>Pedicels

pedicel , .56

56. 004-003

<Flowers>Peduncle

peduncle , ;57

57. 004-002

<Habit>Height

10-30 cm tall (including leaves)58

58. 001-001

<Leaves>Blade

blade , , ,59

59. 003-002

<Leaves>Petiole

petiole , ;60

60. 003-001

<Stems>Hairs

villous61

61. 002-001

Calyx

Calyx subcampanulate, ,62

62. 005

Description

Terrestrial herb, 10-30 cm tall (including leaves). Stem succulent, ascending, villous. Leaves subequal in a pair; petiole 0.7-18 cm long, strigillose; blade papyraceous when dry, ovate or oblong-ovate, 3.5-18.5 x 2-8 cm, margin biserrate-dentate, occasionally producing marginal bulbils, apex acute to acuminate, base rounded or cuneate, above sparsely strigillose to glabrous, below strigillose, especially on veins. Flowers 1-6, umbellate or subcymose; peduncle 7-38 cm long, sparsely strigillose at base, glabrescent above; pedicel 0.5-2 cm long, strigillose. Calyx subcampanulate, green to reddish, lobes free, 4 lobes subequal, dorsal lobe smaller and curved around spur, all oblong, 0.6-1 x 0.15-0.3 cm, margin entire or sparsely toothed, apex acute to acuminate, outside sparsely strigillose, inside sparsely strigillose; corolla oblique in calyx, red-scarlet to orange-rose outside, 2.5-3.7 cm long, tube trumpet-shaped, 1.8-2.8 cm long, base spurred, 0.2-0.3 cm wide, middle slightly ventricose, throat slightly contracted, 0.5-0.7 cm wide, outside sparsely strigillose, inside sparsely pilose towards mouth, limb 1.2-2.5 cm wide, lobes subequal, spreading to patent, rounded, 0.4-1 x 0.4-1 cm, margin subcrenate-serrate; stamens included, adnate for 0.1-0.2 cm to base of corolla tube; ovary ovoid, 0.3-0.4 x 0.2-0.25 cm, pubescent, style ca. 2 cm long, sparsely pubescent, stigma 2-lobed. Mature capsule not seen.

Distribution

Bolivar present, Guyana present, Southern America, eastern Venezuela present

Eastern Venezuela (Bolívar), Guyana, and Brazil; 23 collections studied (GU: 15).

Flowers

Flowers , umbellate or subcymose;63

63. 004

Habit

Terrestrial herb, .64

64. 001

Individuals Association

Guyana, Upper Mazaruni R. basin, Mt. Ayanganna, Tillett & Tillett 45186 Guyana, Potaro-Siparuni Region: Mt. Ayanganna, Clarke 9255 Guyana, beneath Kaieteur Falls, Kvist et al. 370 Guyana, Kaieteur Plateau, bottom of Potaro Gorge near Kaieteur Falls, Cowan & Soderstrom 2148 Guyana, Pakaraima Mts., Kopinang Falls, Maguire et al. 45984A Guyana, Kamarang R., Tillett & Tillett 45563 Guyana, Cuyuni-Mazaruni Region: Karowtipu Mt., Boom et al. 7734 Guyana, Mt. Roraima Escarpment, R. Persaud 80

Leaves

Leaves subequal in a pair;65

65. 003

Mature capsules

Mature capsule not seen.66

66. 006

Phenology

Collected in flower .

Stems

Stem succulent, ascending, .67

67. 002

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