Peperomia rotundifolia

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Peperomia rotundifolia

Content

<<Inflorescences>Peduncle>Length

up to 1 cm long1
1. 004-002-001

<<Inflorescences>Spikes>Length

2-6 cm long2
2. 004-003-001

<<Leaves>Blade>Apex

apex rounded,3
3. 003-003-005

<<Leaves>Blade>Base

base rounded, glabrous to puberulent;4
4. 003-003-006

<<Leaves>Blade>Dimensions

(0.5-)1-1.2 x (0.5-)1-1.2 cm5
5. 003-003-003

<<Leaves>Blade>Margins

margin ciliate,6
6. 003-003-004

<<Leaves>Blade>Shape

broadly elliptic to elliptic or almost orbicular7
7. 003-003-002

<<Leaves>Blade>Texture

fleshy or fleshy coriaceous8
8. 003-003-001

<<Leaves>Petiole>Length

up to 1 cm long9
9. 003-002-001

<<Stems>Internodes>Length

0.3-2 cm long10
10. 002-001-001

<Fruits>Apex

apex oblique with subapical stigma.11
11. 005-001

<Inflorescences>Floral bracts

floral bracts rounded, glabrous, glandular.12
12. 004-004

<Inflorescences>Peduncle

peduncle not nodose, without bract, , pubescent or glabrous;13
13. 004-002

<Inflorescences>Position

terminal14
14. 004-001

<Inflorescences>Spikes

spike , yellow to red, moderately to densely flowered;15
15. 004-003

<Leaves>Blade

blades , , ,16
16. 003-003

<Leaves>Fertile branches

fertile branches often with distally progressively smaller leaves;17
17. 003-001

<Leaves>Petiole

petiole , pubescent to glabrous;18
18. 003-002

<Leaves>Veins

obsolete palmately 3-veined.19
19. 003-004

<Stems>Internodes

internodes , green often with red spots.20
20. 002-001

Common Name

Creole (Guyana): follow me English (French Guiana): wilapili English (Suriname): ditibi, tisiyi

Description

Epiphytic or epilithic herb, prostrate with ascending stem tips rooting at nodes. Stem crisp-pubescent when young, internodes 0.3-2 cm long, green often with red spots. Leaves alternate, basely attached, sometimes subpeltate, fertile branches often with distally progressively smaller leaves; petiole up to 1 cm long, pubescent to glabrous; blades fleshy or fleshy coriaceous, broadly elliptic to elliptic or almost orbicular, (0.5-)1-1.2 x (0.5-)1-1.2 cm, margin ciliate, apex rounded, base rounded, glabrous to puberulent; obsolete palmately 3-veined. Inflorescence terminal, solitary; peduncle not nodose, without bract, up to 1 cm long, pubescent or glabrous; spike 2-6 cm long, yellow to red, moderately to densely flowered; floral bracts rounded, glabrous, glandular. Fruits (sub)basely attached, globose to ovoid, brown, reticulately verruculose, apex oblique with subapical stigma.

Distribution

Pantropical present
Throughout the range of the genus; ca. 135 collections studied (GU: 51; SU: 43; FG: 41).Pantropical

Fruits

Fruits (sub)basely attached, globose to ovoid, brown, reticulately verruculose,21
21. 005

Habit

Epiphytic or epilithic herb, prostrate with ascending stem tips rooting at nodes.22
22. 001

Individuals Association

Guyana, Takutu R., SE Kanuku Mts., Hoffman 456 Suriname, Voltzberg, Jansen-Jacobs et al. 6161 Saül, de Granville et al. 8654 Suriname, Ulemari, Raghoenandan, UVS 17851 Guyana, Barima-Waini region, McDowell 4368 Saül, Feuillet 7388

Inflorescences

Inflorescence , solitary;23
23. 004

Leaves

Leaves alternate, basely attached, sometimes subpeltate,24
24. 003

Notes

Various authors had recognized formas and varieties on basis of leaf form. With all material available it is clear that Peperomia rotundifolia is an extremely variable taxon; specimens may have tiny round leaves, others show round plus somewhat elliptic leaves. As a result, I decided to consider the varieties to be part of one taxon.
Peperomia rotundifolia and P. serpens, two very common species, can easily be distinguished by their inflorescences. In the former the inflorescences point out of the mat of vegetation and the spikes are far longer than the peduncle, whereas in P. serpens the inflorescences are less conspicuous between the mats and spikes and peduncles are equally long.
See also note to P. delascioi.

Stems

Stem crisp-pubescent when young,25
25. 002