Bactris oligocarpa
Bactris (BAHK-triss) oligocarpa (oh-lee-go-KAHR-pah) | |||||||
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French Guiana. Photo-ti palm.fr | |||||||
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Contents
Habitat and Distribution
Central and eastern Amazon region in French Guiana, Suriname, and Brazil (Amapá, Amazonas, Pará), lowland rain forest on terrafirme, at 50-700 m elevation. Undergrowth of rainforests, usually on well-drained, rather dry, sandy soils.Description
Stems solitary or occasionally cespitose, 0.2-1.5 m tall, 0.8-1 cm in diam., occasionally short and subterranean. Leaves 4-15 per crown; leaf spines scattered, black, terete, to 3 cm long, few on sheath and lateral surfaces of petiole, absent from rachis, or occasionally spines absent; sheath 5-15 cm long; ocrea to 8 cm long; petiole 22-50 cm long; rachis 8-30 cm long; blade usually simple or with 2-4 pinnae per side, then the apical pinna much wider than the others, sigmoid; middle pinnae 20-33 x 3-8 cm. Inflorescences interfoliar, occasionally all staminate; peduncle 6-13 cm long, straight, not spiny; prophyll 5-7 cm long; peduncular bract 10-16 cm long, sparsely covered with spines or spines absent; rachis absent; rachilla 1, 2-3 cm long, glabrous at anthesis; triads regularly arranged; staminate flowers 5-6 mm long, persistent; sepal lobes 2 mm long; petals 5-6 mm long; stamens 6; pistillode absent; pistillate flowers 3-4 mm long; calyx tubular, to 3 mm long; corolla tubular, to 3 mm long; staminodial ring adnate to the corolla, to 2 mm long; fruits 1.7-2 x 1-1.5 cm, 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 short calyx and much longer, irregularly-lobed corolla, with staminodial ring./Palmweb. Editing by edric.
Bactris oligocarpa is diagnosed by its 1, 2-3 cm long rachilla; 5-6 mm long staminate flowers; pistillate flowers (and fruits) with staminodial ring; and ovoid, purple-black fruits./Palmweb.
Culture
Requires a shady position. Grows in the wild on well-drained, rather dry, sandy soils.
Comments and Curiosities
Uses: The apical bud is made into a decoction for treating bronchitis.
External Links
References
Phonetic spelling of Latin names by edric.
Special thanks to Geoff Stein, (Palmbob) for his hundreds of photos.
Special thanks to Palmweb.org, Dr. John Dransfield, Dr. Bill Baker & team, for their volumes of information and photos.
Glossary of Palm Terms; Based on the glossary in Dransfield, J., N.W. Uhl, C.B. Asmussen-Lange, W.J. Baker, M.M. Harley & C.E. Lewis. 2008. Genera Palmarum - Evolution and Classification of the Palms. Royal Botanic Gardens, Kew. All images copyright of the artists and photographers (see images for credits).
Many Special Thanks to Ed Vaile for his long hours of tireless editing and numerous contributions.