Bactris killipii

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Bactris (BAHK-triss)
killipii (kihl-LEEP-ee)
AREC-bact-ki-per-28894.jpg
Perú. Photo by Dr. Robin Foster.
Scientific Classification
Genus: Bactris (BAHK-triss)
Species:
killipii (kihl-LEEP-ee)
Synonyms
None set.
Native Continent
America
America.gif
Morphology
Habit: Solitary & clustering, often caespitose.
Leaf type: Pinnate
Culture
Survivability index
Common names
Brazil: marajá. Peru: ñejilla, palmicha, uwinim.

Habitat and Distribution

Central and western Amazon region of Colombia (Amazonas, Vaupes),
Leticia, Amazonas, Colombia. Photo-plantasdecolombia.org
Peru (Amazonas, Loreto, Pasco), and Brazil (Amazonas) Lowland rain forest on terrafirme at 100-600 m elevation.

Description

Stems solitary or cespitose, 10-60 cm tall, 1-1.5 cm in diam., not spiny. Leaves 6-10 per crown, stiffly erect; leaf spines absent (except for spinules at apex of pinnae); sheath 10-12 cm long, sheath, petiole, and rachis densely reddish brown-tomentose; ocrea to 3 cm long; petiole 0.2-1 m long; rachis 6-22 cm long; blade simple (less often pinnate with 2-4 pinnae per side), deeply bifid, stiff and strongly plicate, with small spinules on margins apically; lobes 30-60 cm long, 6-11 cm wide. Inflorescences interfoliar; peduncle 15-19 cm long, straight, not spiny; prophyll 6-8 cm long; peduncular bract 18-24 cm long, not spiny, densely whitish brown-tomentose, glabrescent, opening at anthesis and then closing again around developing fruits; rachilla 1, 4-4.5 cm long, at anthesis densely covered with flexuous trichomes; triads regularly arranged; staminate flowers 4-6 mm long, deciduous; sepal lobes 0.7-1 mm long; petals 4-6 mm long; stamens 6; pistillode small or absent; pistillate flowers 2.5-3 mm long; calyx tubular, 2.5-3 mm long; corolla tubular, 2-2.5 mm long; staminodes absent;fruits 1.4-1.5 x 0.8-1 cm, globose to ellipsoid, orange-red; mesocarp starchy; endocarp obovoid, pitted and grooved or smooth, the sterile pores displaced longitudinally, the fertile pore displaced latitudinally; endocarp fibers lacking; fruiting perianth with deeply 3-lobed calyx equal to the deeply 3-lobed corolla, without staminodial ring. (Henderson, A.J., Bactris (Palmae) in Flora Neotropica Monographs 79. 2000)/Palmweb. Editing by edric.

Bactris killipii is diagnosed by its lack of spines (except on pinna apices), elongate petioles, and contracted rachises, strongly plicate blades, and erect inflorescences with 1 rachilla. Wessels Boer (1988) placed it in synonymy under B. leutzelburgii, itself separated by him from B. simplicifrons. Specimens from the western part of the range have pitted and grooved endocarps and more elongate rachises; specimens from the eastern part of the range have smooth endocarps and contracted rachises. This species is unusual among Bactris in that, after anthesis, the peduncular bract closes again around the developing fruits. (Henderson, A.J., Bactris (Palmae) in Flora Neotropica Monographs 79. 2000)/Palmweb.

Culture

Comments and Curiosities



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).

Henderson, A.J., Bactris (Palmae) in Flora Neotropica Monographs 79. 2000


Many Special Thanks to Ed Vaile for his long hours of tireless editing and numerous contributions.

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