Piper obliquum

Primary tabs

Piper obliquum

<<<Petiole>Blade>Base>Differential distance

up to 1 cm1
1. 003-002-005-001

<<Inflorescences>Peduncle>Length

2-5 cm long2
2. 004-002-001

<<Inflorescences>Spikes>Length

(8-)20-60(-70) cm long3
3. 004-003-001

<<Petiole>Blade>Apex

apex acute to acuminate,4
4. 003-002-004

<<Petiole>Blade>Base

base unequally attached to petiole difference , unequally lobed, basal lobes shorter or longer than petiole, occasionally overlapping the latter, glabrous above, more or less brown-pubescent below, especially on veins;5
5. 003-002-005

<<Petiole>Blade>Dimensions

20-60(-70) x (12-)20-35 cm6
6. 003-002-003

<<Petiole>Blade>Shape

elliptic-ovate to oblong7
7. 003-002-002

<<Petiole>Blade>Texture

not scabrous8
8. 003-002-001

<Fruits>Diameter

1-2 mm in diam.9
9. 005-001

<Fruits>Stigma

stigmas 3, often quite long, sessile, sometimes on a short style.10
10. 005-002

<Habit>Height

1.5-8 m tall11
11. 001-001

<Inflorescences>Floral bracts

floral bracts triangular-rounded to cucullate, glabrous.12
12. 004-005

<Inflorescences>Growth form

pendent13
13. 004-001

<Inflorescences>Peduncle

peduncle , pubescent to glabrescent;14
14. 004-002

<Inflorescences>Rachises

rachis pubescent;15
15. 004-004

<Inflorescences>Spikes

spike , reddish when young, apiculate;16
16. 004-003

<Petiole>Blade

blade , not glandular-dotted, , ,17
17. 003-002

<Petiole>Length

3-7(-10) cm long18
18. 003-001

<Petiole>Veins

pinnately veined, secondary veins 5-9, per side originating from lower 3/4 of primary vein.19
19. 003-003

Common Name

English: Galet fin de Rio Jari, yalataku asili

Description

Shrub or treelet, 1.5-8 m tall. Stem densely pubescent to glabrescent. Petiole 3-7(-10) cm long, glabrous or densely brown-pubescent, green to brown, vaginate or winged to apex; blade not scabrous, not glandular-dotted, elliptic-ovate to oblong, 20-60(-70) x (12-)20-35 cm, apex acute to acuminate, base unequally attached to petiole difference up to 1 cm, unequally lobed, basal lobes shorter or longer than petiole, occasionally overlapping the latter, glabrous above, more or less brown-pubescent below, especially on veins; pinnately veined, secondary veins 5-9, per side originating from lower 3/4 of primary vein. Inflorescence pendent; peduncle 2-5 cm long, pubescent to glabrescent; spike (8-)20-60(-70) cm long, reddish when young, apiculate; rachis pubescent; floral bracts triangular-rounded to cucullate, glabrous. Fruits obovoid or oblongoid, sometimes flattened at apex, 1-2 mm in diam., minutely pubescent or glabrous or with a few basal hairs, stigmas 3, often quite long, sessile, sometimes on a short style.

Distribution

Amazonian Brazil present, Guianas present, Southern America: Peru (Peru present)
Amazonian Brazil, Peru and the Guianas; ca. 90 collections studied (GU: 23; SU: 10; FG: 57).

Fruits

Fruits obovoid or oblongoid, sometimes flattened at apex, , minutely pubescent or glabrous or with a few basal hairs,20
20. 005

Habit

Shrub or treelet, .21
21. 001

Individuals Association

Suriname, Wilhelmina Mts., Irwin et al. 54759 Trinité Mts., de Granville et al. 6410 Suriname, Emma Range, Daniëls & Jonker 1254 Guyana, Pakaraima Mts., N of Paruima, Maas et al. 5856 Upper Marouini basin, de Granville et al. 9223 Guyana, Cuyuni-Mazaruni region, Pipoly 11015

Inflorescences

Inflorescence ;22
22. 004

Notes

There is a great variation in leaf shape and size and in the presence and density of the indument of leaf and stem. This has resulted in the creation of many species. Tebbs (1989: 129, f. 15, 17), in studying the variation of leaves in the taxon, concluded that many names can be reduced to synonymy. In her key, Tebbs separated Piper obliquum and the other large-leaved, tree-like P. cernuum by the indument of the fruits.

Petiole

Petiole , glabrous or densely brown-pubescent, green to brown, vaginate or winged to apex;23
23. 003

Stems

Stem densely pubescent to glabrescent.24
24. 002