Xyris concinna

<<<<<Scapes>Spikes>Bracts>Floral bracts>Shape>Length

ca. 6 mm1

1. 003-005-004-002-001-001

<<<<Scapes>Spikes>Bracts>Empty bracts>Bract number

2-42

2. 003-005-004-001-001

<<<<Scapes>Spikes>Bracts>Empty bracts>Shape

ovate, grading larger to the floral ones3

3. 003-005-004-001-002

<<<<Scapes>Spikes>Bracts>Floral bracts>Shape

ovate to oblong, acute to acuminate, keeled, , back papillose without dorsal area4

4. 003-005-004-002-001

<<<Leaves>Sheaths>Margins>Colour

castaneous5

5. 002-004-002-001

<<<Leaves>Sheaths>Margins>Hairs

ciliolate6

6. 002-004-002-002

<<<Scapes>Spikes>Bracts>Empty bracts

the empty ones ,7

7. 003-005-004-001

<<<Scapes>Spikes>Bracts>Floral bracts

these8

8. 003-005-004-002

<<Capsules>Seeds>Colour

translucent, red-brown9

9. 005-003-003

<<Capsules>Seeds>Length

ca. 1 mm long10

10. 005-003-002

<<Capsules>Seeds>Shape

fusiform11

11. 005-003-001

<<Capsules>Valves>Placentation

placentation basal12

12. 005-002-002

<<Capsules>Valves>Septa

eseptate13

13. 005-002-001

<<Habit>Stems>Length

to ca. 10 cm14

14. 001-003-001

<<Lateral sepals>Anthers>Length

ca. 2 mm15

15. 004-005-001

<<Lateral sepals>Keel>Hairs

usually ciliate from middle to tip16

16. 004-002-001

<<Lateral sepals>Petals>Length

ca. 5 mm17

17. 004-003-002

<<Lateral sepals>Petals>Shape

elliptic18

18. 004-003-001

<<Lateral sepals>Staminodes>Shape

bearded19

19. 004-004-001

<<Leaves>Blade>Shape

flattened20

20. 002-005-001

<<Leaves>Blade>Width

1.5-2.5 mm wide21

21. 002-005-002

<<Leaves>Margins>Hairs

papillose to minutely scabro-ciliate22

22. 002-006-001

<<Leaves>Sheaths>Margins

with firm , entire to margins23

23. 002-004-002

<<Leaves>Sheaths>Shape

abruptly dilated at base, there strongly rounded24

24. 002-004-001

<<Scapes>Spikes>Bracts

bracts in a spiral, , .25

25. 003-005-004

<<Scapes>Spikes>Colour

red-brown26

26. 003-005-003

<<Scapes>Spikes>Length

5-7 mm27

27. 003-005-002

<<Scapes>Spikes>Shape

ovoid becoming obovoid28

28. 003-005-001

<Capsules>Length

ca. 3 mm29

29. 005-001

<Capsules>Seeds

seeds , , .30

30. 005-003

<Capsules>Valves

valves , ;31

31. 005-002

<Habit>Height

8-20 cm high32

32. 001-002

<Habit>Stems

stem short,33

33. 001-003

<Habit>Texture

smooth34

34. 001-001

<Lateral sepals>Anthers

anthers .35

35. 004-005

<Lateral sepals>Keel

keel36

36. 004-002

<Lateral sepals>Petals

petals , ;37

37. 004-003

<Lateral sepals>Shape

oblanceolate38

38. 004-001

<Lateral sepals>Staminodes

staminodes ;39

39. 004-004

<Leaves>Blade

blades ,40

40. 002-005

<Leaves>Growth form

imbricate in a fan41

41. 002-002

<Leaves>Leaf number

numerous42

42. 002-001

<Leaves>Length

5-10 cm43

43. 002-003

<Leaves>Margins

margins .44

44. 002-006

<Leaves>Sheaths

sheaths45

45. 002-004

<Scapes>Ribs

with one strong papillose or scabridulous rib and many fine ones46

46. 003-004

<Scapes>Shape

distally linear, terete to oval47

47. 003-002

<Scapes>Spikes

spikes , , ,48

48. 003-005

<Scapes>Texture

stiff49

49. 003-001

<Scapes>Thickness

ca. 1 mm thick50

50. 003-003

Capsules

Capsule ,51

51. 005

Description

Densely cespitose smooth perennial 8-20 cm high, stem short, to ca. 10 cm. Leaves numerous and imbricate in a fan, 5-10 cm, sheaths abruptly dilated at base, there strongly roundedwith firm castaneous, entire to ciliolate margins, blades flattened, 1.5-2.5 mm wide, margins papillose to minutely scabro-ciliate. Scapes stiff, distally linear, terete to oval, ca. 1 mm thick, with one strong papillose or scabridulous rib and many fine ones; spikes ovoid becoming obovoid, 5-7 mm, red-brown, bracts in a spiral, the empty ones 2-4, ovate, grading larger to the floral ones, these ovate to oblong, acute to acuminate, keeled, ca. 6 mm, back papillose without dorsal area. Lateral sepals free, equilateral, narrow, oblanceolate, keel usually ciliate from middle to tip; petals elliptic, ca. 5 mm; staminodes bearded; anthers ca. 2 mm.Capsule ca. 3 mm, valves eseptate, placentation basal; seeds fusiform, ca. 1 mm long, translucent, red-brown.

Distribution

Mt. Roraima present, Plateau crests across S Bolivar present, Southern America: Venezuela (Venezuela present), Venezuela-Guyana border present

Plateau crests across S Bolivar, Venezuela to Venezuela-Guyana border at Mt. Roraima

Habit

Densely cespitose perennial , .52

52. 001

Individuals Association

Guyana-Venezuela: Cerro Roraima, Steyermark et al. 112566 Guyana-Venezuela: Cerro Roraima, Steyermark et al. 112648

Lateral sepals

Lateral sepals free, equilateral, narrow, , ;53

53. 004

Leaves

Leaves and , , , ,54

54. 002

Scapes

Scapes , , , ;55

55. 003

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