Bactris panamensis de Nevers & Grayum, Proc. Calif. Acad. Sci. , IV, 49: 205 (1996)

Primary tabs

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Distribution

Map uses TDWG level 3 distributions (http://www.nhm.ac.uk/hosted_sites/tdwg/geogrphy.html)
Panamápresent (World Checklist of Arecaceae)A
Panama (Code, Colon, Panama, San Bias), tropical wet forest at 350-1000 m elevation.

Discussion

  • Bactris panamensis is diagnosed by its 15-19 (-25), narrowly to broadly elliptical or oblanceolate, often sigmoid pinnae per side, and obovoid, prominently rostrate, orange fruits 0.7-1 x 0.7-0.8 cm. This species is known only from a small area in central Panama.

Description

  • Stems cespitose, 1.5-3 m tall, 0.7-0.9 cm diam. Leaf number unknown; leaf spines black, terete, to 3 cm long, dense on sheath, few or absent on petiole and rachis; sheath 13-22 cm long; ocrea to 2 cm long; petiole 18-28 cm long; rachis 31-62 cm long; pinnae 15-19(-25) per side, irregularly arranged in clusters of 2-3 in proximal half of leaf, more regularly arranged distally, narrowly to broadly elliptical or oblan-ceolate, often sigmoid, with spinules to 2 mm long on the margins; middle pinnae 10-19 x 1.6-3.6 cm. Inflorescences interfoliar; peduncle 3.5-6 cm long, recurved, spiny; prophyll not seen; peduncular bract 8.5-12.5 cm long, covered with blackish spines to 1.2 cm long; rachis 1.5-2 cm long; rachillae 8-12, 2-3.4 cm long; triads irregularly arranged among paired or solitary staminate flowers; staminate flowers not seen; pistillate flowers 3 mm long; calyx cupular, 0.5 mm long; corolla campanulate to urceolate, 2.5 mm long; staminodes not seen?, fruits 0.7-1 x 0.7-0.8 cm, obovoid, prominently rostrate, orange; mesocarp mealy; endocarp turbinate, the pores equidistant; endocarp fibers lacking; fruiting perianth with minute calyx and deeply 3-lobed corolla, without staminodial ring.

Bibliography