Nelsonia

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Nelsonia

Content

<<<<Flowers>Calyx>Lobes>Lower lobes>Teeth number

2-toothed apically1
1. 004-001-002-001-001

<<<<Flowers>Corolla>Limbs>Lobes>Lobe number

52
2. 004-002-002-003-001

<<<<Flowers>Corolla>Limbs>Lower lip>Lobe number

3-lobed3
3. 004-002-002-002-001

<<<<Flowers>Corolla>Limbs>Upper lip>Lip number

2-lipped4
4. 004-002-002-001-001

<<<<Flowers>Corolla>Limbs>Upper lip>Lobe number

2-lobed5
5. 004-002-002-001-002

<<<Flowers>Calyx>Lobes>Lower lobes

lower lobe usually6
6. 004-001-002-001

<<<Flowers>Corolla>Limbs>Lobes

± equal lobes7
7. 004-002-002-003

<<<Flowers>Corolla>Limbs>Lower lip

lower lip8
8. 004-002-002-002

<<<Flowers>Corolla>Limbs>Upper lip

with upper lip9
9. 004-002-002-001

<<<Flowers>Ovary>Stigma>Lobe number

2-lobed10
10. 004-004-004-001

<<<Flowers>Stamens>Anthers>Theca number

2-thecous11
11. 004-003-003-001

<<<Flowers>Stamens>Filaments>Hairs

basally pubescent12
12. 004-003-002-001

<<<Flowers>Stamens>Thecae>Shape

± globose14
14. 004-003-004-001

<<Capsules>Seeds>Cristae

with numerous cristae15
15. 005-003-003

<<Capsules>Seeds>Hairs

glabrous16
16. 005-003-004

<<Capsules>Seeds>Seed number

8-2817
17. 005-003-001

<<Capsules>Seeds>Shape

globose, not compressed18
18. 005-003-002

<<Flowers>Calyx>Lobe number

4-lobed19
19. 004-001-001

<<Flowers>Calyx>Lobes

lobes unequal, free to base, ;20
20. 004-001-002

<<Flowers>Corolla>Limbs

limb either and , or ;21
21. 004-002-002

<<Flowers>Corolla>Tube

tube sometimes widening into throat,22
22. 004-002-001

<<Flowers>Ovary>Hairs

glabrous23
23. 004-004-003

<<Flowers>Ovary>Ovule number

8-2424
24. 004-004-001

<<Flowers>Ovary>Row number

2-425
25. 004-004-002

<<Flowers>Ovary>Stigma

stigma , usually equally so.26
26. 004-004-004

<<Flowers>Stamens>Anthers

anthers ,27
27. 004-003-003

<<Flowers>Stamens>Filaments

filaments short, ,28
28. 004-003-002

<<Flowers>Stamens>Stamen number

229
29. 004-003-001

<<Flowers>Stamens>Staminodes

staminodes ;30
30. 004-003-005

<<Flowers>Stamens>Thecae

thecae inserted at equal levels, , mucronulate basally,31
31. 004-003-004

<<Leaves>Blade>Shape

ovate, orbicular or linear-lanceolate32
32. 002-001-001

<Capsules>Retinacula

retinacula absent;33
33. 005-002

<Capsules>Seeds

seeds , small, , , .34
34. 005-003

<Capsules>Shape

conical35
35. 005-001

<Flowers>Calyx

calyx ,36
36. 004-001

<Flowers>Corolla

corolla tube with slight constriction at point of insertion of stamens,37
37. 004-002

<Flowers>Ovary

ovary with ovules in rows, ,38
38. 004-004

<Flowers>Stamens

stamens , inserted in top of tube, included or slightly exserted,39
39. 004-003

<Habit>Cystoliths

without cystoliths40
40. 001-002

<Habit>Hairs

pubescent41
41. 001-001

<Inflorescences>Bracteoles

bracteoles lacking.42
42. 003-004

<Inflorescences>Bracts

bracts ± spirally arranged, overlapping, each subtending one flower;43
43. 003-003

<Inflorescences>Flower number

3-many44
44. 003-002

<Inflorescences>Position

axillary or terminal45
45. 003-001

<Leaves>Blade

blades .46
46. 002-001

Capsules

Capsule , beaked, seed bearing only at base,47
47. 005

Description

Diffuse, pubescent herbs, without cystoliths. Leaves petiolate; blades ovate, orbicular or linear-lanceolate. Inflorescences of axillary or terminal spikes of 3-many flowers; bracts ± spirally arranged, overlapping, each subtending one flower; bracteoles lacking. Flowers homostylous, subsessile; calyx 4-lobed, lobes unequal, free to base, lower lobe usually 2-toothed apically; corolla tube with slight constriction at point of insertion of stamens, tube sometimes widening into throat, limb either 2-lipped with 2-lobed upper lip and 3-lobed lower lip, or 5 ± equal lobes; stamens 2, inserted in top of tube, included or slightly exserted, filaments short, basally pubescent, anthers 2-thecous, thecae inserted at equal levels, ± globose, mucronulate basally, staminodes 0; ovary with 8-24 ovules in 2-4 rows, glabrous, stigma 2-lobed, usually equally so. Capsule conical, beaked, seed bearing only at base, retinacula absent; seeds 8-28, small, globose, not compressed, with numerous cristae, glabrous.

Distribution

Africa present, Asia present, Australasia, tropical America
A genus of 3 species in Africa, Asia and Australia; 2 of which are also found in tropical America where it may have been introduced. The genus is often treated as one variable weedy species.

Flowers

Flowers homostylous, subsessile;48
48. 004

Habit

Diffuse, herbs, .49
49. 001

Inflorescences

Inflorescences of spikes of flowers;50
50. 003

Leaves

Leaves petiolate;51
51. 002