Xyris decussata

Primary tabs

Xyris decussata

Content

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

ca. 6 mm1
1. 003-005-004-003-001-001

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

several2
2. 003-005-004-002-001

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

upspike gradually broadening and longer3
3. 003-005-004-002-002

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

ovate to broadly oblong, , broadly to narrowly rounded at apex, subentire, ecarinate4
4. 003-005-004-003-001

<<<Capsules>Seeds>Apiculus>Colour

pale, amber5
5. 005-003-003-001

<<<Capsules>Seeds>Apiculus>Shape

conic6
6. 005-003-003-002

<<<Leaves>Blade>Shape>Width

3-5 mm wide7
7. 002-007-001-001

<<<Scapes>Spikes>Bracts>Empty bracts

empty bracts ,8
8. 003-005-004-002

<<<Scapes>Spikes>Bracts>Floral bracts

flower bracts9
9. 003-005-004-003

<<<Scapes>Spikes>Bracts>Shape

subdecussate, without dorsal area10
10. 003-005-004-001

<<Capsules>Seeds>Apiculus

including a , apiculus11
11. 005-003-003

<<Capsules>Seeds>Length

1.5-1.7 mm long12
12. 005-003-002

<<Capsules>Seeds>Shape

narrowly cylindric-oblanceoloid13
13. 005-003-001

<<Capsules>Valves>Placentation

placentation basalcentral14
14. 005-002-002

<<Capsules>Valves>Septa

septate toward base15
15. 005-002-001

<<Habit>Stems>Length

to 15 cm16
16. 001-002-001

<<Lateral sepals>Anthers>Length

1.5-1.7 mm17
17. 004-006-001

<<Lateral sepals>Keel>Hairs

ciliate or lacero-ciliate toward apex18
18. 004-003-001

<<Lateral sepals>Petals>Length

ca. 5 mm19
19. 004-004-002

<<Lateral sepals>Petals>Shape

elliptic20
20. 004-004-001

<<Lateral sepals>Staminodes>Shape

bearded21
21. 004-005-001

<<Leaves>Blade>Colour

castaneous22
22. 002-005-001

<<Leaves>Blade>Shape

flattened, , blunt23
23. 002-007-001

<<Leaves>Ligula>Shape

triangular24
24. 002-006-001

<<Leaves>Margins>Colour

dark brown25
25. 002-008-001

<<Leaves>Margins>Hairs

densely rusty-ciliate26
26. 002-008-002

<<Leaves>Sheaths>Relative dimensions

ca. as long as blades27
27. 002-004-001

<<Scapes>Ribs>Hairs

rusty-ciliate28
28. 003-004-001

<<Scapes>Spikes>Bracts

bracts firm, , , .29
29. 003-005-004

<<Scapes>Spikes>Colour

dark brown30
30. 003-005-003

<<Scapes>Spikes>Length

ca. 1 cm31
31. 003-005-002

<<Scapes>Spikes>Shape

ovoid to depressed-globose32
32. 003-005-001

<Capsules>Length

4-5 mm33
33. 005-001

<Capsules>Seeds

seeds , .34
34. 005-003

<Capsules>Valves

valves , ;35
35. 005-002

<Habit>Height

15-43 cm high36
36. 001-001

<Habit>Stems

stem short,37
37. 001-002

<Lateral sepals>Anthers

anthers .38
38. 004-006

<Lateral sepals>Keel

keel entire to39
39. 004-003

<Lateral sepals>Length

ca. 6 mm40
40. 004-002

<Lateral sepals>Petals

petals , ;41
41. 004-004

<Lateral sepals>Shape

oblanceolate42
42. 004-001

<Lateral sepals>Staminodes

staminodes ;43
43. 004-005

<Leaves>Blade

entire,44 blade ,45
44. 002-005, 45. 002-007

<Leaves>Growth form

closely imbricate in a fan46
46. 002-002

<Leaves>Length

10-20 cm47
47. 002-003

<Leaves>Ligula

ligule short,48
48. 002-006

<Leaves>Margins

margins incrassate, , .49
49. 002-008

<Leaves>Sheaths

sheath entire,50
50. 002-004

<Leaves>Texture

stiff51
51. 002-001

<Scapes>Rib number

2-ribbed52
52. 003-003

<Scapes>Ribs

ribs53
53. 003-004

<Scapes>Shape

distally flattened54
54. 003-001

<Scapes>Spikes

spikes , , ,55
55. 003-005

<Scapes>Width

2-3 mm wide56
56. 003-002

Capsules

Capsules ,57
57. 005

Description

Cespitose, thick-based perennial, 15-43 cm high, stem short, to 15 cm. Leaves stiff, closely imbricate in a fan, 10-20 cm, sheath entire, ca. as long as blades, entire, castaneous, ligule short, triangular, blade flattened, 3-5 mm wide, blunt, margins incrassate, dark brown, densely rusty-ciliate. Scapes distally flattened, 2-3 mm wide, 2-ribbed, ribs rusty-ciliate; spikes ovoid to depressed-globose, ca. 1 cm, dark brown, bracts firm, subdecussate, without dorsal area, empty bracts several, upspike gradually broadening and longer, flower bracts ovate to broadly oblong, ca. 6 mm, broadly to narrowly rounded at apex, subentire, ecarinate. Lateral sepals free, subequilateral, oblanceolate, ca. 6 mm, keel entire to ciliate or lacero-ciliate toward apex; petals elliptic, ca. 5 mm; staminodes bearded; anthers 1.5-1.7 mm. Capsules 4-5 mm, valves septate toward base, placentation basalcentral; seeds narrowly cylindric-oblanceoloid, 1.5-1.7 mm longincluding a pale, amber, conic apiculus.

Distribution

Bolivar present, Chimanta Massif present, Guyana present, Mt. Roraima present, Southern America: Venezuela (Venezuela present ‒ present)
Chimanta Massif, Bolivar, Venezuela E to Mt. Roraima on the border of Venezuela, Brazil and Guyana

Habit

Cespitose, thick-based perennial, , .58
58. 001

Individuals Association

Bolivar: Mt. Roraima N and NW of Summit Camp, Steyermark 58806 Roraima, common boundary Guyana, Brazil and Venezuela, Steyermark et al. ll2618 Guyana, Liesner Guyana, Mazaruni-Potaro, summit of Roraima, La Proa Camp near Lake Gladys, Liesner 23323

Lateral sepals

Lateral sepals free, subequilateral, , , ;59
59. 004

Leaves

Leaves , , , , , ,60
60. 002

Scapes

Scapes , , , ;61
61. 003