Bactris gastoniana Barb.Rodr., Vellosia 1: 40 (1888)

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Distribution

Map uses TDWG level 3 distributions (http://www.nhm.ac.uk/hosted_sites/tdwg/geogrphy.html)
Brazil Northpresent (World Checklist of Arecaceae)B
French Guianapresent (World Checklist of Arecaceae)B
Surinamepresent (World Checklist of Arecaceae)B
Central and eastern Amazon region in Suriname, French Guiana, and Brazil (Amapa, Amazonas, Pará). (Henderson, A.J., Bactris (Palmae) in Flora Neotropica Monographs 79. 2000)A

Habitat

Discussion

Common Name

Description

  • Stems solitary or cespitose, subterranean or aerial and then 5-60 cm tall, 0.8-2 cm diam., covered with persistent, decaying leaf bases.
    Leaves 4-8; leaf spines widely scattered, black, terete, to 5 cm long, on sheath, petiole, and proximal part of rachis, sometimes absent; sheath 11-20 cm long, persistent, fibrous at apex, sheath, petiole and rachis brown-tomentose; ocrea to 10 cm long; petiole 40-75 cm long; rachis 45-55 cm long; pinnae 8-11 per side, irregularly arranged in clusters of 2-4, spreading in different planes or more or less in the same plane, sigmoid, aristate, minutely spiny on the margins; middle pinnae 19-28 x 2.5-4 cm.
    Inflorescences interfoliar; peduncle 13-20 cm long, straight, spiny or not spiny; prophyll 9-12 cm long; peduncular bract 16-25 cm long, densely covered with black or brown spines to 1.5 cm long, glabrescent; rachis absent; rachilla 1, 3-4 cm long; triads regularly arranged; staminate flowers to 1 cm long, persistent; sepal lobes to 1.5 cm long; petals to 1 cm long; stamens not seen; pistillate flowers to 6 mm long; calyx urceolate, to 3 mm long; corolla urceolate, to 6 mm long, spinulose; staminodial ring adnate to corolla; fruits 2.5-3 x 1.5-2 cm, densely crowded, ellipsoid or widely ovoid, purple-black; mesocarp juicy; endocarp ellipsoid, the sterile pores displaced longitudinally, the fertile pore displaced latitudinally; endocarp fibers free, numerous, with juice sacs attached; fruiting perianth with small calyx and tubular, many-lobed corolla, with staminodial ring. (Henderson, A.J., Bactris (Palmae) in Flora Neotropica Monographs 79. 2000)A