Dypsis andapae Beentje, Palms Madagascar : 300 (1995)

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Introduction

  • An entire-leaved species with large leaves and relatively small unbranched inflorescences. The specific epithet derives from the fivondronana, the local administrative unit. (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Distribution

Map uses TDWG level 3 distributions (http://www.nhm.ac.uk/hosted_sites/tdwg/geogrphy.html)
Madagascarpresent (World Checklist of Arecaceae)B
Marojejy Mountains and Mandritsara area. (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Discussion

  • In the group of small palms with entire leaves and unbranched inflorescences, closest (through clustering habit, deeply lobed leaf, 6 stamens) to D. coriacea and D. tenuissima, but distinct by a larger leaf-sheath and much larger leaf lobes. (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Diagnosis

  • Gregem palmunculorum foliis integris inflorescentiis spicatis pertinens D. coriaceae et D. tenuissimae habitu caespitosa foliis profunde lobatis 6 staminibus affinis sed vagina et lobis folii multo majoribus distincta. (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Biology And Ecology

  • Submontane rain forest; steep mid slope; 850-1400 m. (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Conservation

  • Rare. The distribution of this species is limited. (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Common Name

  • Tsingovatrovatra (Tsimihety, a rather general name for small palms). (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Uses

  • Not recorded. (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Description

  • Clustering palm in tufts of 4-6. STEMS to 1.2 m tall, 0.8-1.2 cm diam.; distal internodes 4-4.5 cm, glabrous. LEAVES 6-10 per crown, arching, entire, bifid; sheath 10-16 cm long, closed for 3/4, with some scattered scales, with 4-10 mm long narrowly triangular auricles; petiole 7-18 cm long, 2-3.5 mm diam., with densely scattered scales, lamina 29-48 cm long, midrib 10-22 cm long, lobes 18-28 x 3.3-7.5 cm, main veins 8-12, with small reddish scattered scales on major and minor veins, apices dentate over a width of 8-15 mm, the outer margins with some teeth as well. INFLORESCENCE interfoliar, unbranched; peduncle 22-33 cm long, 1.5-2.5 mm diam., glabrous or minutely puberulous; prophyll 13-22 cm long, 0.7-1.7 cm wide, borne at 1.5-5 cm above the base of the peduncle, open for 1-3 cm, with scattered scales; peduncular bract inserted at 10-15 cm from the base of the peduncle, 9-20 cm long, open for 25-50%, with scattered scales, sometimes with a beak of up to 5 mm long, tattering; rachilla 13-22 cm long, 1.5-2.5 mm diam., with stellate scales, with dense triads. STAMINATE FLOWERS with the free part of the sepals 0.6-1 x 0.5-0.8 mm, the connate part c. 0.5 mm; petals 1.5-2 x 0.7-1.1 mm; stamens 6, biseriate (offset 0.2 mm), filaments 0.5-0.8 mm, anthers 0.6-0.8 x 0.2-0.4 mm, versatile; pistillode < 0.5 mm. PISTILLATE FLOWERS with sepals 0.7-1.2 x 0.7-1 mm; petals 1.5-2 x 0.8-1.5 mm; staminodes not seen; ovary c. 0.6-0.8 x 0.5 mm in bud. FRUIT orange, ellipsoid with rounded apex, 11-13 x 7-7.5 mm; endocarp with free fibers. SEED 9-11.5 x 4.5-5.5 mm, pointed at base and apex, with homogeneous endosperm. (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Materials Examined

  • Andapa: from Ambatoharanana Valley to upper Antsahaberoka R. basin, Nov. 1959 (fl.), Humbert & Saboureau 31703 (K, P); Beamalona, June 1992 (fr.), Beentje & Andriampaniry 4680 (Holotype K; isotypes MO, P, TAN). Mandritsara: Antsiasiaka, April 1974 (bud), Morat 4499 (P). (J. Dransfield & H. Beentje, The Palms of Madagascar. 1995)A

Bibliography

A. J. Dransfield & H. Beentje, The Palms of Madagascar. 1995
B. World Checklist of Arecaceae