Alternanthera

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Alternanthera

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<<<Flowers>Ovules>Stigma>Shape

capitate and globose to more or less punctate1
1. 004-003-003-001

<<<Flowers>Stamens>Anthers>Locule number

2-locular2
2. 004-002-002-002

<<<Flowers>Stamens>Anthers>Shape

oblong or ovate3
3. 004-002-002-001

<<<Flowers>Stamens>Pseudostaminodes>Shape

subulate or ligulate, distally dentate to fimbriate4
4. 004-002-003-001

<<Flowers>Ovules>Ovule number

15
5. 004-003-001

<<Flowers>Ovules>Stigma

stigma .6
6. 004-003-003

<<Flowers>Ovules>Style

style obscure to slender,7
7. 004-003-002

<<Flowers>Stamens>Anthers

anthers , ,8
8. 004-002-002

<<Flowers>Stamens>Pseudostaminodes

pseudostaminodia shorter or longer than stamens, ;9
9. 004-002-003

<<Flowers>Stamens>Stamen number

(3)510
10. 004-002-001

<<Flowers>Tepals>Hairs

glabrous inside11
11. 004-001-004

<<Flowers>Tepals>Inner tepal number

212
12. 004-001-003

<<Flowers>Tepals>Outer tepal number

313
13. 004-001-002

<<Flowers>Tepals>Tepal number

514
14. 004-001-001

<<Habit>Juvenile stems>Hairs

often pubescent, but glabrous with age15
15. 001-001-001

<Flowers>Ovules

ovule ,16
16. 004-003

<Flowers>Stamens

stamens , united below,17
17. 004-002

<Flowers>Tepals

tepals , outer longer than and enclosing inner , ;18
18. 004-001

<Habit>Juvenile stems

young stems and leaves .19
19. 001-001

<Inflorescences>Position

axillary or terminal20
20. 003-001

<Leaves>Margin type

entire21
21. 002-001

Description

Perennial or annual herbs or subshrubs; young stems and leaves often pubescent, but glabrous with age. Leaves opposite, entire. Inflorescences axillary or terminal, sessile or pedunculate, of various types. Flowers bisexual; tepals 5, outer 3 longer than and enclosing inner 2, glabrous inside; stamens (3)5, united below, anthers oblong or ovate, 2-locular, pseudostaminodia shorter or longer than stamens, subulate or ligulate, distally dentate to fimbriate; ovule 1, style obscure to slender, stigma capitate and globose to more or less punctate. Fruit an indehiscent utricle.

Distribution

Guianas present, tropics and subtropics of the New and Old Worlds present
Approximately 200 species in the tropics and subtropics of the New and Old Worlds, including 6 species in the Guianas.

Flowers

Flowers bisexual;22
22. 004

Fruits

Fruit an indehiscent utricle.23
23. 005

Habit

Perennial or annual herbs or subshrubs;24
24. 001

Inflorescences

Inflorescences , sessile or pedunculate, of various types.25
25. 003

Leaves

Leaves opposite, .26
26. 002