Peperomia delascioi

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Peperomia delascioi

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<<Inflorescences>Floral bracts>Diameter

0.3 mm in diam.1
1. 004-005-001

<<Inflorescences>Peduncle>Length

0.3-0.5(-2) cm long2
2. 004-003-001

<<Inflorescences>Spikes>Length

0.6-3 cm long3
3. 004-004-001

<<Leaves>Blade>Apex

apex emarginate with some hairs at notch,4
4. 003-002-005

<<Leaves>Blade>Base

base rounded or subtruncate, glabrous above, minutely hirtellous at base below;5
5. 003-002-006

<<Leaves>Blade>Dimensions

0.5-0.8 x 0.5-1 cm6
6. 003-002-003

<<Leaves>Blade>Margins

margin not ciliate,7
7. 003-002-004

<<Leaves>Blade>Shape

oblately suborbicular8
8. 003-002-002

<<Leaves>Blade>Texture

fleshy-membranous9
9. 003-002-001

<<Leaves>Petiole>Length

0.3-0.8 cm long10
10. 003-001-001

<<Stems>Upper internodes>Length

4-10 mm long11
11. 002-002-001

<Fruits>Dimensions

1-1.1 x 0.5 mm12
12. 005-001

<Fruits>Stigma

stigma apical, mammiform.13
13. 005-002

<Habit>Height

up to 9 cm14
14. 001-001

<Inflorescences>Floral bracts

floral bracts rounded, umbonate with pale margin, ;15
15. 004-005

<Inflorescences>Growth form

erect16
16. 004-002

<Inflorescences>Peduncle

peduncle , minutely hirtellous, without bracts;17
17. 004-003

<Inflorescences>Position

terminal opposite the uppermost leaves18
18. 004-001

<Inflorescences>Rachises

rachis glabrous.19
19. 004-006

<Inflorescences>Spikes

spike with scattered flowers, ;20
20. 004-004

<Leaves>Blade

blade basely attached or slightly peltate, , , ,21
21. 003-002

<Leaves>Petiole

petiole , minutely hirtellous;22
22. 003-001

<Leaves>Veins

palmately 3-5-veined.23
23. 003-003

<Stems>Length

0.1 mm long24
24. 002-001

<Stems>Upper internodes

upper internodes .25
25. 002-002

Description

Terrestrial herb, non-creeping, suberect or ascending up to 9 cm, not rooting at nodes. Stem minutely hirtellous (spreading hairs 0.1 mm long); upper internodes 4-10 mm long. Uppermost leaves opposite, the others alternate; petiole 0.3-0.8 cm long, minutely hirtellous; blade basely attached or slightly peltate, fleshy-membranous, oblately suborbicular, 0.5-0.8 x 0.5-1 cm, margin not ciliate, apex emarginate with some hairs at notch, base rounded or subtruncate, glabrous above, minutely hirtellous at base below; palmately 3-5-veined. Inflorescence terminal opposite the uppermost leaves, erect, solitary; peduncle 0.3-0.5(-2) cm long, minutely hirtellous, without bracts; spike with scattered flowers, 0.6-3 cm long; floral bracts rounded, umbonate with pale margin, 0.3 mm in diam.; rachis glabrous. Fruits stipitate pale brown, smooth, oblong-ellipsoid, 1-1.1 x 0.5 mm, crowned with a persistent, conic style, stigma apical, mammiform.

Distribution

Guyana present, Guyana — Venezuela border present, Mazaruni-Potaro region, Roraima summit, La Proa camp near lake Gladys present
Known only from altitudes above 2000 m at the Guyana — Venezuela border; 1 collection studied of Guyana: Mazaruni-Potaro region, Roraima summit, La Proa camp near lake Gladys, Liesner 23288 (U) (GU: 1).

Fruits

Fruits stipitate pale brown, smooth, oblong-ellipsoid, , crowned with a persistent, conic style,26
26. 005

Habit

Terrestrial herb, non-creeping, suberect or ascending , not rooting at nodes.27
27. 001

Inflorescences

Inflorescence , , solitary;28
28. 004

Leaves

Uppermost leaves opposite, the others alternate;29
29. 003

Notes

According to Steyermark, Peperomia delascioi can be distinguished from P. emarginella which also has an emarginate leaf apex and orbicular leaves by the following characters: Peperomia delascioi is suberect to ascending, has hirtellous stems, petioles and peduncles and non-ciliate leaves. From P. rotundifolia, it can be distinguished by the stipitate fruit with mammiform apex and by the non-creeping, not rooting habit. Peperomia delascioi is known only from cool summits in dwarf shrub and herbaceous vegetation at altitudes from 2400-2800 m, whereas P. rotundifolia prefers warm, humid forest from near sea level to 1000 m.

Stems

Stem minutely hirtellous (spreading hairs );30
30. 002