Piper peltatum

Description

Large herb to 3 m tall. Internodes black glandular-dotted, more densely so on nodes. Leaves alternate, peltate; petiole attached at up to 1/3 of blade, rarely near base, 8-20 cm long, vaginate or slightly winged in lower part; blade glandular-dotted, round-ovate, to 16-30 x 18-40 cm, apex acute, base nearly rounded to usually deeply cordate, glabrous except for short hairs on veins; palmately 13-15-veined, veins radiating from petiole tip, and 2 pairs originating from central vein. Inflorescence erect, umbellate, seem to be axillary, but are reduced, sympodial branches with very short internodes, without leaves; common peduncle 2-8 cm long, peduncles slender, 1-1.5 cm long; spikes numerous, 5-10 cm long, each subtended by a single prophyll, densely flowered; floral bracts marginally fringed. Fruits trigonous, glabrous.

Distribution

tropical S America: present
Widely distributed in tropical S America; ca. 60 collections studied (GU: 25; SU: 13; FG: 25).

Common Name

English (Guyana, Republic of): cow foot leaf, popo sakara

Uses

As a fish-poison, for that purpose cultivated (in Guyana, NW Distr., according to Archer).

Notes

There has been quite a discussion on the correct name of the taxon. I agree with R. Callejas that the taxon can best be placed in Piper, not separated as Lepianthes or Pothomorphe. Piper peltatum together with P. marginatum, P. umbellatum L. and several other extra-Guianan taxa form a distinct clade within Piper (Jaramillo & Manos, Amer. J. Bot. 88: 712. 2001). They do not form a monophyletic group and should not be separated from Piper.

Synonymy

Piper peltatum L. in Sp. Pl. 30: [1231]. 1753 sec. C.A. Todzia & al. 2006
  • Pothomorphe peltata (L.) Miq. in Comm. Phytogr. 37. 1840
  • Lepianthes peltata (L.) R.A. Howard in J. Arnold Arbor. 54: 381. 1973

Images

Specimens

CountryDateCollector + collecting numberHerbariaTypeScanDerivatives
Guyana, Republic ofGrewal 289
Citation: Guyana, Republic of, Ithaca, Berbice R., Grewal 289.

Guyana, Republic ofJansen-Jacobs et al. 2236
Citation: Guyana, Republic of, Rupununi Distr., Kanuku Mts., Jansen-Jacobs et al. 2236.

De Granville et al. 7303
Citation: Inini R., De Granville et al. 7303.

Görts-van Rijn et al. 67
Citation: Saül, Görts-van Rijn et al. 67.

Suriname, Republic ofLBB 16263
Citation: Suriname, Republic of, Wilhelmina Mts., LBB 16263.

Suriname, Republic ofIrwin et al. 54650
Citation: Suriname, Republic of, Wilhelmina Mts., S slope Juliana peak, Irwin et al. 54650.