Chamaedorea matae Hodel, Principes 35: 75 (1991)

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Map uses TDWG level 3 distributions (
Costa Ricapresent (World Checklist of Arecaceae)B
Panamápresent (World Checklist of Arecaceae)B


Biology And Ecology


  • Habit: solitary, slender, erect, to 3 m tall. Stem: 1.5-2 cm diam., green, smooth, ringed, internodes 5-12 cm long. Leaves: 4-7, spreading, pinnate; sheath to 20 cm long, tubular, obliquely open apically, longitudinally striated; petiole to 15-25 cm long, grooved and green above, rounded and pale below; rachis 50-70 cm long, angled and green above, rounded with a yellowish band below extending onto sheath; pinnae 4-5 on each side of rachis, basal ones to 30 x 9 cm, broadly lanceolate, strongly sigmoid, acuminate, thick, leathery, 5-6 prominent primary nerves, elevated above, drying yellow and prominent below, end pair conspicuously wider, to 15 cm wide, 10-12-nerved. Inflorescences: interfoliar, erect to nodding or arching, solitary; peduncles to 50 cm long, 7-10 mm diam., greenish in flower and red-orange in fruit where exposed; bracts 5, prophyll to 6 cm long, 2nd and 3rd bracts to 15 cm, 4th to 23 cm, 5th to 26 cm, ± loosely sheathing, brownish in flower and fruit, bifid, acuminate, fibrous, becoming tattered; rachises 3-8 cm long, green in flower, red-orange in fruit. Staminate with up to 15 rachillae, to 25 cm long, pendulous, green in flower. Pistillate with 7-10 rachillae, to 15-20 cm long, green and pendulous in flower, red-orange and pendulous in fruit. Flowers: Staminate in moderately dense spirals 1-2 mm apart, 3 x 2.5 mm, ± ovoid to barrel-shaped, leaving superficial elliptic scars 2.5-3 mm long; calyx 2.5 x 0.75 mm, scarcely lobed, strongly nerved when dry, sepals connate nearly to apex, rounded or straight apically; petals 3.5 x 2.5-3 mm, valvate, connate apically and basally and apically adnate to pistillode and corolla opening by lateral slits, strongly nerved when dry; stamens shorter than pistillode, anthers 1.5 mm long; pistillode 2.5-2.75 mm high, columnar. Pistillate leaving ± rounded superficial scars 2 mm long; calyx 0.75 mm high in fruit, scarcely lobed, strongly nerved; petals 2 x 3 mm in fruit, imbricate basally, broadly rounded apically, dark-centered, brown-margined, strongly nerved; pistil not seen. Fruits: 7-8 x 5-6 mm, ± ovoid, black. (Hodel, D. 1992. Chamaedorea Palms, The Species and Their Cultivation. The International Palm Society.)A

Materials Examined