Xyris paraensis

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Xyris paraensis

Content

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

ca. 2-4 mm1
1. 003-002-003-004-001-001

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

obovate, low-auricled, , rounded, convex, ecarinate, entire to erose2
2. 003-002-003-004-001

<<<Leaves>Blade>Margins>Colour

a narrow thickened brown band3
3. 002-005-003-001

<<<Leaves>Blade>Margins>Texture

smooth, rarely papillose4
4. 002-005-003-002

<<<Leaves>Sheaths>Hairs>Colour

stramineous to brown or red-brown5
5. 002-003-001-001

<<<Scapes>Shape>Ribs>Rib number

26
6. 003-001-002-001

<<<Scapes>Spikes>Bracts>Bract number

several to many7
7. 003-002-003-001

<<<Scapes>Spikes>Bracts>Empty bracts

the lower few empty, slightly smaller than and grading into the flowering ones8
8. 003-002-003-003

<<<Scapes>Spikes>Bracts>Floral bracts

these9
9. 003-002-003-004

<<<Scapes>Spikes>Bracts>Shape

with broad dorsal area10
10. 003-002-003-002

<<Capsules>Seeds>Colour

amber11
11. 005-004-003

<<Capsules>Seeds>Length

0.5-0.9 mm12
12. 005-004-002

<<Capsules>Seeds>Shape

ellipsoid to fusiform13
13. 005-004-001

<<Capsules>Valves>Septa

eseptate14
14. 005-003-001

<<Lateral sepals>Anthers>Length

0.5-0.7 mm15
15. 004-005-001

<<Lateral sepals>Keel>Hairs

ciliate to ciliolate or papillose16
16. 004-002-001

<<Lateral sepals>Petals>Length

2-4 mm17
17. 004-003-002

<<Lateral sepals>Petals>Shape

obovate18
18. 004-003-001

<<Lateral sepals>Staminodes>Shape

bearded19
19. 004-004-001

<<Leaves>Blade>Margins

margins thin or , .20
20. 002-005-003

<<Leaves>Blade>Shape

variably flattened21
21. 002-005-001

<<Leaves>Blade>Width

1-2.5 mm wide22
22. 002-005-002

<<Leaves>Keel>Colour

shining brown23
23. 002-004-001

<<Leaves>Keel>Hairs

sometimes scabro-ciliate24
24. 002-004-002

<<Leaves>Sheaths>Hairs

eciliate,25
25. 002-003-001

<<Scapes>Shape>Ribs

with papillose ribs26
26. 003-001-002

<<Scapes>Shape>Thickness

0.3-0.8 mm thick27
27. 003-001-001

<<Scapes>Spikes>Bracts

bracts in a spiral, , , .28
28. 003-002-003

<<Scapes>Spikes>Length

0.3-2 cm29
29. 003-002-002

<<Scapes>Spikes>Shape

ovoid to subglobose, ellipsoid or cylindric30
30. 003-002-001

<Capsules>Length

ca. (1-)2 mm31
31. 005-001

<Capsules>Placentation

placentation basal32
32. 005-002

<Capsules>Seeds

seeds , , .33
33. 005-004

<Capsules>Valves

valves ;34
34. 005-003

<Habit>Height

5-40 cm high35
35. 001-002

<Habit>Shape

slender36
36. 001-001

<Habit>Stems

stems short37
37. 001-003

<Lateral sepals>Anthers

anthers .38
38. 004-005

<Lateral sepals>Keel

keel wide, coarsely and irregularly39
39. 004-002

<Lateral sepals>Length

3-4 mm40
40. 004-001

<Lateral sepals>Petals

petals , ;41
41. 004-003

<Lateral sepals>Staminodes

staminodes ;42
42. 004-004

<Leaves>Blade

blades , ,43
43. 002-005

<Leaves>Growth form

erect or in fans44
44. 002-001

<Leaves>Keel

keel often thickened, ,45
45. 002-004

<Leaves>Length

2-15(-20) cm46
46. 002-002

<Leaves>Sheaths

sheaths , entire, keeled47
47. 002-003

<Scapes>Shape

distally terete, , finely striate, mostly ecostate or48
48. 003-001

<Scapes>Spikes

spikes , ,49
49. 003-002

Capsules

Capsule , ,50
50. 005

Description

Mostly low and slender, annual or short-lived, smoothish herbs, 5-40 cm high, stems short. Leaves erect or in fans, 2-15(-20) cm, sheaths eciliate, stramineous to brown or red-brown, entire, keeled, keel often thickened, shining brown, sometimes scabro-ciliate; blades variably flattened, 1-2.5 mm wide, margins thin or a narrow thickened brown band, smooth, rarely papillose. Scapes distally terete, 0.3-0.8 mm thick, finely striate, mostly ecostate or with 2 papillose ribs; spikes ovoid to subglobose, ellipsoid or cylindric, 0.3-2 cm, bracts several to many in a spiral, with broad dorsal area, the lower few empty, slightly smaller than and grading into the flowering ones, these obovate, low-auricled, ca. 2-4 mm, rounded, convex, ecarinate, entire to erose. Lateral sepals free, strongly inequilateral, curved, 3-4 mm, keel wide, coarsely and irregularly ciliate to ciliolate or papillose; petals obovate, 2-4 mm; staminodes bearded; anthers 0.5-0.7 mm. Capsule ca. (1-)2 mm, placentation basal, valves eseptate; seeds ellipsoid to fusiform, 0.5-0.9 mm, amber.

Distribution

Belize present, French Guiana present, Guianas present, S Venezuela present, SE Colombia present, Southern America, contiguous Amazonian Brazil present
SE Colombia E across S Venezuela to French Guiana and in contiguous Amazonian Brazil. A rare disjunction in Belize. Two varieties in the Guianas, a third in Brazil.

Habit

Mostly low and , annual or short-lived, smoothish herbs, , .51
51. 001

Lateral sepals

Lateral sepals free, strongly inequilateral, curved, , ;52
52. 004

Leaves

Leaves , , , ;53
53. 002

Scapes

Scapes ;54
54. 003