Piper trichoneuron

Description

Shrub, sometimes treelet, to 2 m tall. Stem crisp-pubescent. Stipules late deciduous. Petiole often stout, to 1 cm long, densely crisp-pubescent, vaginate to apex; blade sometimes with pale band along primary vein, coriaceous, more or less orange glandular-dotted on lower surface, sometimes somewhat scabrous, (narrowly) elliptic, elliptic-oblong or (narrowly) ovate, 12-33 x 5-13 cm, apex (long-)acuminate, base equal or unequally attached to petiole difference 0-0.5 cm, obtuse to rounded to subcordate occasionally cuneate, glabrous above, crisp-pubescent on veins below; pinnately veined, secondary veins 4-7(-11) per side, originating from lower 1/2 to 2/3 of primary vein, not anastomosing, impressed above, rather prominent below, tertiary veins widely reticulate, transverse. Inflorescence erect; peduncle 1 cm long to ca. 2 cm in fruit, pubescent; spike 8-9 cm long, in fruit to 11 cm long, often reddish or pink, apiculate; floral bracts densely marginally fringed. Fruits oblongoid, glandular, hirsute, stigmas 3, obtuse, sessile.

Distribution

Guianas: present Southern America:
The Guianas and Brazil (Acre); over 110 collections studied (GU: 29; SU: 28; FG: 56).

Notes

The leaf base of Piper trichoneuron is very variable in shape. Piper trichoneuron and P. hostmannianum resemble each other in having pubescent, coriaceous leaves. See also note to P. hostmannianum.
Tebbs (1993: 44) includes P. gleasonii in P. jacquemontianum, a C American species. In my opinion P. gleasonii is similar to P. trichoneuron and thus I include it under the latter.

Synonymy

Piper trichoneuron (Miq.) C. DC. in A. DC., Prodr. 16: 281. 1869 sec. C.A. Todzia & al. 2006
  • Artanthe trichoneura Miq., Syst. Piperac.: 483. 1844
  • =Artanthe berbicensis Miq., Syst. Piperac.: 500. 1844
  • Piper hostmannianum var. berbicense (Miq.) C. DC. in A. DC., Prodr. 16: 287. 1869
  • =Artanthe kegeliana Miq. in Linnaea 22: 77. 1849
  • Piper kegelianum (Miq.) C. DC. in A. DC., Prodr. 16: 372. 1869
    • Isotype: Suriname, Para, near Klein Onoribo, Kegel 659.
    • Holotype: Suriname, Para, near Klein Onoribo, Kegel 659.
  • =Piper gleasonii Yunck. in Maguire et al., Bull. Torrey Bot. Club 75: 287. 1948
    • Isotype: Guyana, Rockstone, Gleason 857 (K).
    • Isotype: Guyana, Rockstone, Gleason 857 (NY).
    • Isotype: Guyana, Rockstone, Gleason 857 (U).
    • Isotype: Guyana, Rockstone, Gleason 857.
    • Holotype: Guyana, Rockstone, Gleason 857.

Images

Specimens

CountryDateCollector + collecting numberHerbariaTypeScanDerivatives
Guyana, Republic ofJansen-Jacobs et al. 3034
Citation: Guyana, Republic of, Rupununi Distr., between Kuyuwini Landing and Kassikaityu R., Jansen-Jacobs et al. 3034.

Guyana, Republic ofJansen-Jacobs et al. 4891
Citation: Guyana, Republic of, Rupununi Distr., Shea to Quitaro R., Bowi Cr., Jansen-Jacobs et al. 4891.

Gleason 857K, NY, U
Citation: Guyana, Rockstone, Gleason 857.

Specimen summary: Guyana, Rockstone, Gleason 857.
Isotype of Piper gleasonii Yunck.
Holotype of Piper gleasonii Yunck.

Specimen summary: K
Isotype of Piper gleasonii Yunck.

Specimen summary: NY
Isotype of Piper gleasonii Yunck.

Specimen summary: U
Isotype of Piper gleasonii Yunck.

de Granville et al. 7946
Citation: Mt. Bellevue de l’Inini, de Granville et al. 7946.

Görts-van Rijn et al. 55
Citation: Saül area, Görts-van Rijn et al. 55.

Kegel 659
Citation: Suriname, Para, near Klein Onoribo, Kegel 659.

Specimen summary: Suriname, Para, near Klein Onoribo, Kegel 659.
Isotype of Artanthe kegeliana Miq. Piper kegelianum (Miq.) C. DC.
Holotype of Artanthe kegeliana Miq. Piper kegelianum (Miq.) C. DC.

Suriname, Republic ofLindeman & Görts-van Rijn et al. 246
Citation: Suriname, Republic of, Kabalebo dam area, Lindeman & Görts-van Rijn et al. 246.

Suriname, Republic ofIrwin et al. 54611
Citation: Suriname, Republic of, Wilhelmina Mts., Irwin et al. 54611.