Bactris bidentula Spruce, J. Linn. Soc., Bot. 11: 146 (1869)

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Map uses TDWG level 3 distributions (
Brazil Northpresent (World Checklist of Arecaceae)B
Brazil West-Centralpresent (World Checklist of Arecaceae)B
Colombiapresent (World Checklist of Arecaceae)B
Venezuelapresent (World Checklist of Arecaceae)B
Central Amazon region in Colombia (Amazonas), Venezuela (Amazonas, Apure), Peru (Loreto) and Brazil (Amazonas, Mato Grosso, western Pará). (Henderson, A.J., Bactris (Palmae) in Flora Neotropica Monographs 79. 2000)A



Common Name


  • Stems cespitose, forming dense clumps of 4-20 or more stems, 1.7-5 m tall, 3-6 cm diam., spiny on internodes.
    Leaves 3-16; leaf spines distinctly clustered, black, tomentose at first, 3-4(-8) cm long, on sheath, petiole, and abaxial surface of rachis; sheath 10-35 cm long, fibrous on the margins, sheath, petiole, and rachis densely whitish tomentose, glabrescent; ocrea to 30 cm long, becoming fibrous and persistent; petiole 14-53 cm long; rachis 0.5-1.6 m long; pinnae 24-49 per side, irregularly arranged in distant clusters of 2-7, spreading in different planes, linear-lanceolate or oblanceolate, briefly bifid at the apex, with few spines on margins, densely whitish brown-Iepidote abaxially; middle pinnae 16-34 x 2.3-4 cm.
    Inflorescences interfoliar; peduncle 8-32 cm long, straight to slightly recurved, not spiny; prophyll 9-20 cm long; peduncular bract 22-45 cm long, whitish brown-tomentose with few black spines to 2 cm long; rachis 4-12 cm long; rachillae 20-50, 10-12 cm long, at anthesis densely covered with moniliform trichomes; triads irregularly arranged among paired or solitary staminate flowers; staminate flowers 3-4 mm long; sepal lobes 1-1.5 mm long; petals 3-4 mm long; stamens 6; pistillode minute or absent; pistillate flowers 2.5-3 mm long; calyx cupular, to 1 mm long; corolla tubular, 2.5-3 mm long; staminodes absent;fruits to 2 cm diam., depressed-globose, rostrate, purple-black; mesocarp juicy; endocarp depressed-oblong, the sterile pores displaced longitudinally; endocarp fibers numerous, with juice sacs attached; fruiting perianth with cupular, 3-lobed calyx and cupular, scarcely 3-lobed corolla, without staminodial ring. (Henderson, A.J., Bactris (Palmae) in Flora Neotropica Monographs 79. 2000)A

Use Record