Euterpe luminosa A.J.Hend., Galeano & Meza, Brittonia 43: 178 (1991)

Primary tabs

http://media.e-taxonomy.eu/palmae/photos/palm_tc_83085_1.jpg

Distribution

Map uses TDWG level 3 distributions (http://www.nhm.ac.uk/hosted_sites/tdwg/geogrphy.html)
Perupresent (World Checklist of Arecaceae)B
Known only from the type locality in Peru (Pasco); understory of moist cloud forest bordering pajonal vegetation, characterized by its shrubby, xeromorphic composition, at 2000-2500 m. (Gloria Galeano & A. Henderson, Flora Neotropica Monograph 72)A

Discussion

  • This unusual species not only has a very narrow range (as currenlly known) but it also is unique in having ellipsoid fruits, a condition nearly unknown in both Prestoea (rarely occurring in P. acuminata var. dasystachys) and Euterpe. It is also unusual in the genus in having a pinnate eophyll with an elongate rachis, and staminodes in the pistillate flowers; both of these characters occur in Prestoea. (Gloria Galeano & A. Henderson, Flora Neotropica Monograph 72)A

Common Name

  • Peru : guayaquil , palma palanca. The trunks are used as poles. (Gloria Galeano & A. Henderson, Flora Neotropica Monograph 72)A

Description

  • Stems cespitose but generally only one developed with suckers at base, erect, 5-11 m tall, 5-7 cm diam., grayish.
    Leaves 9-12, spreading; sheath 48-65 cm long, without a ligule, green, with moderate covering of woolly, reddish brown hairs apically; petiole 20-35 cm long, green (reddish, as the rachis, in young plants), densely covered on both surfaces with woolly, reddish brown hairs; rachis 1.1-1.4 m long, densely covered on both surfaces with hairs like those of petiole; pinnae 48-69 per side, almost pendulous (forming a roof shape), subopposite, glabrous, with midvein prominent adaxially and abaxially and with 2 submarginal lateral veins, the pinnae margins and veins adaxially and abaxially with scattered ramenta; basal pinna 20-25 x 0.1-0.2 cm wide; middle pinnae 35-41 x 0.6-1 cm wide; apical pinna 14-15 x 0.5 cm.
    lnflorescences infrafoliar at anthesis, erect; peduncle 4-5 cm long, 1 cm diam. at peduncular bract scar; prophyll ca. 32 cm long, ca. 3 cm diam., papyraceous, glabrous; peduncular bract 32 cm long, without an umbo, 2 cm diam. glabrous, peduncle with 2 or 3 smaller peduncular bracts present to 4 cm long; rachis 13-16 cm long; rachillae 30-40, to 30 cm long, to 2 mm diam. at anthesis, absent from adaxial surface of rachis, slightly swollen at base, each subtended by a small bracteole, sparsely to densely covered with 0.5 mm long, stellate, reddish brown hairs, these straight or slightly undulate, fasciculate; flowers in triads proximally, paired or solitary staminate distally, or occasionally inflorescence almost all staminate; triad bracteole prominent, apiculate to 1 mm long. Second and third flower bracteoles low, membranous; staminate flowers 6-7 mm long, some shortly pedicellate; sepals deltate, 2.5 mm long, briefly connate below, free distally, gibbous; petals triangular, 5 mm long; stamens arranged on a short receptacle; filaments 1.5 mm long; anthers 3 mm long; pistillode 1 mm long; pistillate flowers to 2.5 mm long; sepals very widely ovate, 2 mm long; petals very widely ovate, 2 mm long; staminodes 6, very small, digitate.
    Fruits ellipsoid, 2 cm long, 1 cm diam., the stigmatic remains prominent, subapical, with an expanded perianth to 7 mm long; epicarp black; seeds ellipsoid; endosperm homogeneous, with central air space; eophyll pinnate with an elongate rachis. (Gloria Galeano & A. Henderson, Flora Neotropica Monograph 72)A

Materials Examined

  • PERU. PASCO: Prov. Oxapampa, Distr. Huancabamba, Cordillera Yanachaga, W slope at base of highest peaks, side rd. to NE halfway between Oxapampa and Huancabamba. ridge SE of Cooperativa 3 de Mayo, 75°26'W, 10°27'S, 2000-2500 m, 18-21 Sep 1984, R Foster et al. 11155 (F); Provo Oxapampa, Palmazú, 75°23'W, 10°32'S, 2100 m, 30 Aug 1991, Meza 837 (NY); 20 Sep 1984, D. Smith et al. 8514 (MO); 28 Sep 1984, D. Smith 8534 (MO). (Gloria Galeano & A. Henderson, Flora Neotropica Monograph 72)A

Use Record

  • Euterpe luminosa A.J.Hend., Galeano & Meza: El 59% de las especies (13 spp.) reportaron el uso alimenticio tanto de frutos, como de semillas, palmito u otros derivados de estos; cinco de estas especies son utilizadas exclusivamente para este fin, Allagoptera leucocalyx, Bactris hirta y B. major son buscadas solamente por sus frutos, mientras que Dictyocaryum lamarckianum y Euterpe luminosa son extraidas ocasionalmente por el palmito. (Paniagua Zambrana, N.Y., Guía de plantas útiles de la comunidad de San José de Uchupiamonas. 2001)
    Use CategoryUse Sub CategoryPlant PartHuman GroupEthnic GroupCountry
    Human FoodFoodPalm heartNot identifiedN/ABolivia

Bibliography

A. Gloria Galeano & A. Henderson, Flora Neotropica Monograph 72
B. World Checklist of Arecaceae