Piper nigrispicum

Primary tabs

Piper nigrispicum

<<Inflorescences>Peduncle>Length

0.5-1.8 cm long1
1. 004-002-001

<<Inflorescences>Spikes>Diameter

10 mm in diam. in vivo2
2. 004-003-002

<<Inflorescences>Spikes>Length

1-5 cm long3
3. 004-003-001

<<Infructescences>Fruits>Stigma

stigmas 3, sessile.4
4. 005-001-001

<<Petiole>Blade>Apex

apex acuminate,5
5. 003-002-003

<<Petiole>Blade>Base

base equal or almost equally attached to petiole, acute or cuneate or obtusish, occasionally rough above (from scale-like emergent structures), glabrous below;6
6. 003-002-004

<<Petiole>Blade>Dimensions

8-15 x 3-6 cm7
7. 003-002-002

<<Petiole>Blade>Shape

(narrowly) ovate to elliptic-oblong8
8. 003-002-001

<Habit>Height

to 2.5 m tall9
9. 001-001

<Inflorescences>Floral bracts

floral bracts densely marginally fringed.10
10. 004-004

<Inflorescences>Growth form

pendent11
11. 004-001

<Inflorescences>Peduncle

peduncle slender, , glabrous, often reddish or violaceous;12
12. 004-002

<Inflorescences>Spikes

spike , , green, yellow to reddish, apiculate;13
13. 004-003

<Infructescences>Fruits

fruits trigonous or subtetragonous with narrow “collar”, glabrous, green,14
14. 005-001

<Petiole>Blade

blade shiny dark green above, pale below, densely black glandular-dotted, translucent dotted in vivo, , ,15
15. 003-002

<Petiole>Length

0.4-0.8 cm long16
16. 003-001

<Petiole>Veins

pinnately veined, secondary veins 3-5 per side, anastomosing near margin, originating from lower 3/4 of primary vein, tertiary veins widely reticulate, not conspicuous.17
17. 003-003

Description

Shrub to 2.5 m tall. Stem glabrous, young ones often reddish. Petiole 0.4-0.8 cm long, glabrous, pubescent when young, vaginate at base; blade shiny dark green above, pale below, densely black glandular-dotted, translucent dotted in vivo, (narrowly) ovate to elliptic-oblong, 8-15 x 3-6 cm, apex acuminate, base equal or almost equally attached to petiole, acute or cuneate or obtusish, occasionally rough above (from scale-like emergent structures), glabrous below; pinnately veined, secondary veins 3-5 per side, anastomosing near margin, originating from lower 3/4 of primary vein, tertiary veins widely reticulate, not conspicuous. Inflorescence pendent; peduncle slender, 0.5-1.8 cm long, glabrous, often reddish or violaceous; spike 1-5 cm long, 10 mm in diam. in vivo, green, yellow to reddish, apiculate; floral bracts densely marginally fringed. Infructescence pendent, green; fruits trigonous or subtetragonous with narrow “collar”, glabrous, green, stigmas 3, sessile.

Distribution

Amazonian Bolivia present, French Guiana present, Guianas present, NE Brazil present
NE Brazil and the Guianas (mainly French Guiana) and Amazonian Bolivia; over 120 collections studied (GU: 6; SU: 1; FG: 114).

Habit

Shrub .18
18. 001

Individuals Association

Mt. Galbao, de Granville et al. 9006 Suriname, Tumac Humac Range, Telouakem, Acevedo 6019 Mt. Bellevue de l’Inini, de Granville et al. 7579 Saül, Acevedo Guyana, NW Distr., Barima R., Kariako, van Andel 1469 Guyana, Mabura, Ek 551

Inflorescences

Inflorescence ;19
19. 004

Infructescences

Infructescence pendent, green;20
20. 005

Notes

Many collections were previously assigned to Piper rudgeanum. After having compared those collections with the type of P. rudgeanum (Suriname, Kegel s.n.), it is certain that they belong to P. nigrispicum. Piper rudgeanum differs in having 1 cm long spikes on stout peduncles, stylose ovaries and fruits subtended by cucullate floral bracts with only the ventral margin fringed, whereas in P. nigrispicum slender peduncles bear 1-5 cm long spikes and the ovaries and fruits have sessile stigmas and are subtended by densely marginally fringed floral bracts.

Petiole

Petiole , glabrous, pubescent when young, vaginate at base;21
21. 003

Stems

Stem glabrous, young ones often reddish.22
22. 002