Pachystachys

Primary tabs

Pachystachys

<<<Calyx>Corolla>Lobes>Colour

bright red, becoming orange-red with age, pink or occasionally white1
1. 005-003-006-002

<<<Calyx>Corolla>Lobes>Shape

oblong or ovate2
2. 005-003-006-001

<<<Calyx>Corolla>Lower lip>Lobe number

3-lobed3
3. 005-003-005-001

<<<Calyx>Corolla>Upper lip>Lobe number

2-lobed4
4. 005-003-004-001

<<<Calyx>Stamens>Anthers>Theca number

2-thecous5
5. 005-004-002-001

<<<Leaves>Blade>Apex>Shape

acute to acuminate, the tip itself usually blunt, gradually to rather abruptly narrowed at base6
6. 003-001-002-001

<<<Leaves>Blade>Margins>Hairs

glabrous except puberulous, glabrescent primary and secondary veins7
7. 003-001-003-002

<<<Leaves>Blade>Margins>Margin type

entire or undulate8
8. 003-001-003-001

<<Calyx>Corolla>Growth form

spreading9
9. 005-003-001

<<Calyx>Corolla>Lip number

2-lipped10
10. 005-003-003

<<Calyx>Corolla>Lobes

lobes subequal, , ;11
11. 005-003-006

<<Calyx>Corolla>Lower lip

lower lip ,12
12. 005-003-005

<<Calyx>Corolla>Shape

slenderly obconic, curved13
13. 005-003-002

<<Calyx>Corolla>Upper lip

upper lip narrow, at tip,14
14. 005-003-004

<<Calyx>Stamens>Anthers

anthers , deeply sagittate,15
15. 005-004-002

<<Calyx>Stamens>Base

base of thecae muticous,16
16. 005-004-003

<<Calyx>Stamens>Stamen number

217
17. 005-004-001

<<Calyx>Stamens>Staminodes

staminodes absent or rudimentary.18
18. 005-004-004

<<Inflorescences>Flowers>Flower number per verticillaster

3-419
19. 004-002-001

<<Leaves>Blade>Apex

apex ,20
20. 003-001-002

<<Leaves>Blade>Margins

margin , .21
21. 003-001-003

<<Leaves>Blade>Shape

elliptic or broadly oblanceolate to oblong-obovate22
22. 003-001-001

<Calyx>Corolla

corolla , , ,23
23. 005-003

<Calyx>Lobe number

5-lobed24
24. 005-001

<Calyx>Lobes

lobes relatively short;25
25. 005-002

<Calyx>Stamens

stamens , about as long as the corolla, attached near base of tube,26
26. 005-004

<Inflorescences>Bracteoles

bracteoles small or none.27
27. 004-004

<Inflorescences>Bracts

bracts conspicuous, herbaceous;28
28. 004-003

<Inflorescences>Flowers

flowers in verticillasters of flowers;29
29. 004-002

<Inflorescences>Position

terminal30
30. 004-001

<Leaves>Blade

blades ,31
31. 003-001

<Stems>Hairs

puberulous when young, soon becoming glabrous32
32. 002-002

<Stems>Shape

terete or upper parts subquadrangular33
33. 002-001

Calyx

Calyx ,34
34. 005

Capsules

Capsule with 4 reticulate seeds.35
35. 006

Description

Herbaceous or suffrutescent plants. Stems terete or upper parts subquadrangular, puberulous when young, soon becoming glabrous. Leaves petiolate; blades elliptic or broadly oblanceolate to oblong-obovate, apex acute to acuminate, the tip itself usually blunt, gradually to rather abruptly narrowed at base, margin entire or undulate, glabrous except puberulous, glabrescent primary and secondary veins. Inflorescences dense, terminal, solitary spikes; flowers in verticillasters of 3-4 flowers; bracts conspicuous, herbaceous; bracteoles small or none. Calyx 5-lobed, lobes relatively short; corolla spreading, slenderly obconic, curved, 2-lipped, upper lip narrow, 2-lobed at tip, lower lip 3-lobed, lobes subequal, oblong or ovate, bright red, becoming orange-red with age, pink or occasionally white; stamens 2, about as long as the corolla, attached near base of tube, anthers 2-thecous, deeply sagittate, base of thecae muticous, staminodes absent or rudimentary. Capsule with 4 reticulate seeds.

Distribution

Amazonian Brazil present, French Guiana present, Guianas present, Neotropics present, Northern America, Southern America: Bolivia (Bolivia present); Peru (Peru present)
From Mexico and the West Indies southward to Peru and Bolivia, eastward to French Guiana and Amazonian Brazil; in the Neotropics 13 species, of which 2 in the Guianas.

Habit

Herbaceous or suffrutescent plants.36
36. 001

Inflorescences

Inflorescences dense, , solitary spikes;37
37. 004

Leaves

Leaves petiolate;38
38. 003

Stems

Stems , .39
39. 002