Bactris faucium Mart., Voy. Amér. Mér. 7(3): 60 (1844)

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Distribution

Map uses TDWG level 3 distributions (http://www.nhm.ac.uk/hosted_sites/tdwg/geogrphy.html)
Boliviapresent (World Checklist of Arecaceae)B
Bolivia (Cochabamba, La Paz, Santa Cruz).
Andean foothills in forest, at 350-800 m elevation. (Henderson, A.J., Bactris (Palmae) in Flora Neotropica Monographs 79. 2000)A

Discussion

  • Bactris faucium is diagnosed by its prophyll almost as long as the sulcate, spinulose peduncular bract, and purple-black fruits. The holotype has not been found at P. Henderson (I995) included some specimens of this species (Moreno 39, Moreno 77, Williams 392) under Bactris maraja var. juruensis. (Henderson, A.J., Bactris (Palmae) in Flora Neotropica Monographs 79. 2000)A

Description

  • Stems cespitose, 2-3(-6) m tall, 0.8-1.5 cm diam.
    Leaves 5-10; leaf spines scattered, dark brown, terete, to 6 cm long, on sheath, petiole, and proximal part of rachis; sheath 15-30 cm long; ocrea to 10 cm long; petiole 17-25 cm long; rachis 15-35 cm long; blade simple or with 2-15 pinnae per side but then the apical one always wider, regularly arranged, spreading in different planes or more or less in the same plane, sigmoid; middle pinnae 22-35 x 2-5 cm.
    Inflorescences interfoliar, exserted through leaf sheath, becoming infrafoliar; peduncle 2-4.5 cm long, straight, spiny or not spiny; prophyll 7-11 cm long; peduncular bract 8-16 cm long, sulcate, whitish brown-tomentose, with short, brown spinules in lines along the sulcae; rachis 2.5-3 cm long; rachillae 5-6, 3-4 cm long, densely covered at anthesis with short spinules; triads irregularly arranged among paired or solitary staminate flowers; staminate flowers to 6.5 mm long; sepal lobes to 1 mm long; petals to 6 mm long; stamens 6; pistillode absent; pistillate flowers 3.5-4 mm long; calyx tubular, to 3.5 mm long, spinulose; corolla tubular, to 4 mm long, spinulose; staminodes 6, minute; fruits to 2 cm diam., globose to obovoid, purple-black; mesocarp juicy; endocarp depressedglobose, the sterile pores displaced longitudinally; endocarp fibers free, numerous; fruiting perianth with 3-lobed, spinulose calyx and lobed, spinulose corolla, without staminodial ring. (Henderson, A.J., Bactris (Palmae) in Flora Neotropica Monographs 79. 2000)A

Bibliography

A. Henderson, A.J., Bactris (Palmae) in Flora Neotropica Monographs 79. 2000
B. World Checklist of Arecaceae