Calyptrocalyx julianettii

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julianettii (yoo-lee-ah-NET-ee)
Scientific Classification
Genus: Calyptrocalyx
julianettii (yoo-lee-ah-NET-ee)
None set.
Native Continent
Habit: Solitary & clustering.
Leaf type: Pinnate
Survivability index
Common names

Habitat and Distribution

Calyptrocalyx julianettii is endemic to, Indonesia: Papua: Fakfak Division. Papua New Guinea: Morobe,
New Caledonia, photo by Ben.
Northern, and Central Provinces. In rain forest; alt. 100-1200 m.


Solitary or clustering, small palms. Stems erect, 1-2 m tall, 12-24 mm in diam.; crown holds about 10 leaves. Leaves irregularly segmented, 60-90 by 25-30 cm, with outer margin curved toward the leaf apex; 1eafbase 14-18 cm long, cylindrical, with scaly tomentum, margin finely lacerate-fibrous; petiole absent, or 1-3 cm by 3-4 mm, shallowly channelled adaxially; lamina 36-70 cm long, outline elongate to elliptical, 5-12 segments per side, segments falcate to sigmoid, rigid, dark green adaxially, lighter abaxially; narrow segments with a single midrib, broad segments with 2-12 ribs, lowest segments shortest, with 1-3 ribs, apical segments broad with 7-9 ribs, midleaf segments narrower than either basal or apical segments, 10-15 mm wide; midribs raised only on adaxial surface. Inflorescence 40-90 cm long, 1-4-spiked; prophylll6-17 cm long; peduncular bract 24-38 cm long, with dark scaly tomentum; peduncle 20-40 cm long, subterete, 1.5-3 mm wide; rameal bracts in distal portion to 2 mm long; rachilla 15-30 em long, 3-3.5 mm in diam., fusiform, with dark scaly tomentum; floral pits distantly to closely spaced, margin raised. Staminate flowers 2.5-5 mm long in bud, ovoid; sepals about 1 mm long, broadly ovate, basally ridged, margins ciliate; petals 2-5 mm long, longitudinally striate, cream; stamens 9; anthers linear, shallowly sagittate, versatile; pistillode narrow, columnar. Pistillate flowers with sepals broadly rounded; petal apex briefly triangular. Fruit ellipsoid, tapered acutely to the apex, 11-13 mm long, 6-9 mm in diam., red; epicarp smooth, minutely linear granular when dry; mesocarp fleshy. Seed globose, 5-8 mm in diam.; endosperm homogeneous. (Smithsonian Tropical Institute) Editing by edric.


In cultivation, it appreciates a sheltered spot in a tropical climate but is still extremely rarely seen in collections. Warm, sheltered and moist.

Comments and Curiosities

Etymology - It was named for the collector of the type specimen, Amedeo Giulianetti, expedition assistant to Dr Lamberto Loria.

Calyptrocalyx julianettii is distinguished by a solitary or clustering habit, irregularly segmented leaves, multi-spiked inflorescence, ellipsoid fruit, and homogeneous endosperm.

External Links


Phonetic spelling of Latin names by edric.

Special thanks to Geoff Stein, (Palmbob) for his hundreds of photos.

Special thanks to, Dr. John Dransfield, Dr. Bill Baker & team, for their volumes of information and photos.

Glossary of Palm Terms; Based on the glossary in Dransfield, J., N.W. Uhl, C.B. Asmussen-Lange, W.J. Baker, M.M. Harley & C.E. Lewis. 2008. Genera Palmarum - Evolution and Classification of the Palms. Royal Botanic Gardens, Kew. All images copyright of the artists and photographers (see images for credits).

Many Special Thanks to Ed Vaile for his long hours of tireless editing and numerous contributions.

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