Ceroxylon parvum Galeano, Caldasia 17: 403 (1995)

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Distribution

Map uses TDWG level 3 distributions (http://www.nhm.ac.uk/hosted_sites/tdwg/geogrphy.html)
Southwestern cordillera of the Ecuadorian Andes, at 1500 m elevation, in premontane forests. It is only known as isolated individuals, not forming large populations, and usually kept standing on pastures. (Maria Jose Sanin & Gloria Geleano in Phytotaxa 34 (2011))B

Discussion

  • This species resembles C. pityrophyllum, and some specimens that had been determined as C. parvum are here placed under C. pityrophyllum. However, C. parvum has slender filaments (of the staminodes), and staminodes that vary in number from 7-11, whereas C. pityrophyllum has broad-based filaments of the staminodes, and stamens and staminodes are always six in number. Apparently, C. parvum is a species that does not form large stands, while C. pityrophyllum does. It grows far from C. pityrophyllum, and only on the Western slopes of the Ecuadorian Andes. (Maria Jose Sanin & Gloria Geleano in Phytotaxa 34 (2011))B

Description

  • Subcanopy palm. Stem solitary, to 10 m tall, 10-20 cm in diameter, greenish grey to grey. Leaves 1.5-2.5 meters long; pinnae 90-120 on each side, inserted in groups of 2-6 or sometimes more and spreading in different planes, but leaf not strongly bushy; central pinnae 50-80 cm long and 2-3 cm wide, below with a thin, silverish layer of wax. Inflorescences curving to pendulous, 1.5-2 m long, branched 3 times. Fruits globose, 12-20 mm in diameter, smooth, bright orange-red, with two aborted carpels slightly developed and visible. (Borchsenius F., Borgtoft-Pedersen H. and Baslev H. 1998. Manual to the Palms of Ecuador. AAU Reports 37. Department of Systematic Botany, University of Aarhus, Denmark in collaboration with Pontificia Universidad Catalica del Ecuador)A
  • Stem 2.5-6.0 m tall, 9-28 cm diam, white at base and turning green towards apex, covered with a very thin layer of wax.
    Leaves 11, in a dense, spherical crown, with dead leaves hanging; sheath 78 cm long, adaxially glabrescent, abaxially covered with a deciduous layer of scales; petiole 10 cm long, covered with indumentum like that of the sheath; rachis 168 cm long, adaxially flattened in ½ of its length, glabrescent, abaxial surface covered with deciduous, membranous scales; pinnae 102-109 on each side, arranged in groups of 2-6, abaxial surface and midrib covered with elliptical, yellowish, 1 mm scales, with 0.3-0.5 mm bases, and arranged in adjacent 0.25 mm wide rows.
    Staminate inflorescences not seen.
    Female inflorescences 4 at one time; peduncle 133 cm long, 1.5 cm wide at apex; prophyll 30 cm long, 7.5 cm wide at base; peduncular bracts 5, 47-155 cm long; rachis 65 cm long, with ca. 55 branches, each subtended by a 0.2-0.6 cm membranous bract; longest branches 31 cm long; prophyll, peduncle, bracts and base of rachis covered with brown, persistent, lepidote indumentum, rachillae glabrous.
    Pistillate flowers: sepals 3, broadly-triangular-acuminate, 1.0-1.5 mm long, connate in 0.6-1.0 mm (½-2/3 of total length), not reaching corolla tube, petals 3, elliptical-acuminate, 5.0-6.5 mm long, including an acumen of 2-3 mm long, connate up to 1.2-2.0 mm; staminodes (7-)9-11, 1 antisepalous, 2?3 antipetalous, filaments 1 mm long, abortive anthers 0.9-1.2 mm long, pistil green, trifid, 2-3 mm diam.
    Fruits globose, orange-red when ripe, 1-2 cm diam., exocarp smooth to slightly warted; fruiting perianth with sepals triangular-acuminate, 1.0-1.5 mm long, connate in 0.3-1.0, lobes not reaching or reaching the corolla tube; petals ovate-acuminate, connate in 0.3-0.7 mm long, widened at base.
    Seeds 1.0-1.2 cm diam. (Maria Jose Sanin & Gloria Geleano in Phytotaxa 34 (2011))B

Materials Examined

Use Record