Pulchranthus

Primary tabs

Pulchranthus

<<<Calyx>Corolla>Lower lobes>Colour

often purplish-dotted1
1. 005-003-006-003

<<<Calyx>Corolla>Lower lobes>Hairs

ciliate2
2. 005-003-006-002

<<<Calyx>Corolla>Lower lobes>Shape

oblong to ovate or nearly orbicular3
3. 005-003-006-001

<<<Calyx>Corolla>Tube>Shape

short, broad and curved4
4. 005-003-004-001

<<<Calyx>Corolla>Upper lobes>Shape

oblong-elliptic to oblong5
5. 005-003-005-001

<<<Calyx>Stamens>Filaments>Hairs

glabrous or pubescent6
6. 005-004-002-001

<<<Calyx>Stamens>Staminodes>Staminode number

27
7. 005-004-003-001

<<Calyx>Corolla>Colour

violet to lilac or white to pink with purplish spots8
8. 005-003-001

<<Calyx>Corolla>Hairs

glandular puberulent without9
9. 005-003-003

<<Calyx>Corolla>Lip number

2-lipped10
10. 005-003-002

<<Calyx>Corolla>Lower lobes

lower lobes , and ;11
11. 005-003-006

<<Calyx>Corolla>Tube

tube ,12
12. 005-003-004

<<Calyx>Corolla>Upper lobes

upper lobes ,13
13. 005-003-005

<<Calyx>Lobes>Hairs

glandular puberulent14
14. 005-002-002

<<Calyx>Lobes>Shape

narrowly triangular15
15. 005-002-001

<<Calyx>Stamens>Filaments

filaments curved, ,16
16. 005-004-002

<<Calyx>Stamens>Stamen number

217
17. 005-004-001

<<Calyx>Stamens>Staminodes

staminodes .18
18. 005-004-003

<<Capsules>Seeds>Seed number

419
19. 006-002-001

<Calyx>Corolla

corolla , strongly , ,20
20. 005-003

<Calyx>Lobe number

5-lobed21
21. 005-001

<Calyx>Lobes

lobes , ;22
22. 005-002

<Calyx>Stamens

stamens , exserted,23
23. 005-004

<Capsules>Seeds

seeds .24
24. 006-002

<Capsules>Shape

clavate25
25. 006-001

<Inflorescences>Hairs

glandular puberulent26
26. 004-002

<Inflorescences>Position

terminal spikes to racemes, or well-branched terminal panicles with flowers in fascicles27
27. 004-001

<Leaves>Cystoliths

cystoliths present.28
28. 003-004

<Leaves>Hairs

glabrous or sparsely pubescent with short, appressed trichomes29
29. 003-003

<Leaves>Margin type

entire, undulate, or crenate30
30. 003-002

<Leaves>Shape

narrowly elliptic to oblong31
31. 003-001

<Stems>Hairs

glabrous32
32. 002-002

<Stems>Shape

terete to subquadrangular33
33. 002-001

Calyx

Calyx ,34
34. 005

Capsules

Capsules ;35
35. 006

Description

Herbs or subshrubs. Stems terete to subquadrangular, glabrous. Leaves sessile or petiolate, narrowly elliptic to oblong, entire, undulate, or crenate, glabrous or sparsely pubescent with short, appressed trichomes, cystoliths present. Inflorescences terminal spikes to racemes, or well-branched terminal panicles with flowers in fascicles, glandular puberulent. Calyx 5-lobed, lobes narrowly triangular, glandular puberulent; corolla violet to lilac or white to pink with purplish spots, strongly 2-lipped, glandular puberulent without, tube short, broad and curved, upper lobes oblong-elliptic to oblong, lower lobes oblong to ovate or nearly orbicular, ciliate and often purplish-dotted; stamens 2, exserted, filaments curved, glabrous or pubescent, staminodes 2. Capsules clavate; seeds 4.

Distribution

French Guiana present, Guianas present, Southern America: Colombia (Colombia present), Suriname present, coastal and eastern Brazil present, eastern Peru present, low elevation forests of tropical America present
A genus of 4 species, local and infrequent in low elevation forests of tropical America, from Colombia, eastern Peru and eastward to Suriname and French Guiana and southward to coastal and eastern Brazil; in the Guianas 3 species.

Habit

Herbs or subshrubs.36
36. 001

Inflorescences

Inflorescences , .37
37. 004

Leaves

Leaves sessile or petiolate, , , ,38
38. 003

Stems

Stems , .39
39. 002

Studied:

P. surinamensis.

Wood

Growth rings formed by a few rows of radially flattened fibres.
Vessels arranged in radial strokes, solitary for about 30%, remainder in radial multiples of 2-12, numerous 70 (63-75) per sq. mm, outline angular, 25-45 µm wide. Vessel member length 566 (265-785) µm. Perforations simple, intervascular pits 4 µm, slits enclosed, occasionally confluent; vessel/ray pitting identical.
Rays 1-2(-3)-seriate, 2-3 per mm. Heterogeneous, nearly all cells square or upright, the uprights up to 130 µm tall. Height of vertically fused rays about 1200 µm.
Parenchyma extremely scarce, restricted to a single strand bordering a vessel. Strands of 2-3 cells.
Ground tissue of septate fibres. Diameter 20-23 µm, walls thin, 3 µm, seldom a rhombic crystal present. Pits simple, minute, frequent in both radial and tangential walls. Length 760 (600-900) µm. F/V ratio: 1.77.