Hydriastele montana

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Hydriastele (high-dree-Ah-STEL-eh)
montana (mohn-TAHN-ah)
Hm32456778974.JPG
Hydriastele montana. A–B. Habit. C. Infructescence. A, C from Aifat, Bird’s Head Peninsula, western New Guinea; B from Baker et al. 1380. Photos A, C: C.D. Heatubun; B: W.J. Baker. PETER PETOE, CHARLIE D. HEATUBUN & WILLIAM J. BAKER Phytotaxa 370 (1) © 2018 Magnolia Press.
Scientific Classification
Genus: Hydriastele (high-dree-Ah-STEL-eh)
Species:
montana (mohn-TAHN-ah)
Synonyms
Nengella montana (1877), Old name-Gronophyllum montanum (1985)
Native Continent
Oceania
Oceania.gif
Morphology
Habit: Clustering
Leaf type: Pinnate
Culture
Survivability index
Common names
None.

Habitat and Distribution

Endemic to New Guinea.
Hydriastele montana. A–B. Habit. C. Infructescence. A, C from Aifat, Bird’s Head Peninsula, western New Guinea; B from Baker et al. 1380. Photos A, C: C.D. Heatubun; B: W.J. Baker. PETER PETOE, CHARLIE D. HEATUBUN & WILLIAM J. BAKER Phytotaxa 370 (1) © 2018 Magnolia Press.
Distribution:—The Tamrau Mountains of the Bird’s Head Peninsula, western New Guinea.

Habitat:—Premontane rainforest on ridges and slopes, 950–1300(–1500) m. PETER PETOE, CHARLIE D. HEATUBUN & WILLIAM J. BAKER Phytotaxa 370 (1) © 2018 Magnolia Press.

Description

Clustering and gregarious understorey palm to 1.5 m tall, very slender, bearing 4–5 leaves per crown, forming suckers by vigorous rhizomatous growth. Stem 5–8 mm in diam. Leaf 25–50 cm long including petiole; sheath 10–15 cm long; petiole 3–8 cm long; leaflets ca. 9–11 per side, regularly arranged, single- or bi-fold, narrowly linear, praemorse or pointed apically, ramenta apparently lacking. Inflorescence 7–9 cm long including 1–1.5 cm peduncle, spicate, protandrous; spike yellowish to green; triads spirally arranged. Staminate flower 9–10 × 1.5–2.5 mm in bud; stamens 6. Pistillate flower 4–4.5 × 3–3.5 mm in bud, with free sepals and free petals with conspicuous, triangular and valvate tips. Fruit about 12–19 × 4 mm when ripe (when dry), fusiform, red, with a distinct, dark, sclerotic zone encircling apical stigmatic remains (up to about 2 mm in diam.). Seed about 12–14 × 3 mm (when dry), elongate to turbinate; endosperm homogenous. PETER PETOE, CHARLIE D. HEATUBUN & WILLIAM J. BAKER Phytotaxa 370 (1) © 2018 Magnolia Press.

Culture

Cold Hardiness Zone: 10b

Comments and Curiosities

Notes:—Hydriastele montana is a slender understorey palm with a gregarious habit, resulting from the production of multiple running rhizomes. It is distinguished by its leaves with 9–11 narrowly linear leaflets on each side of the rachis in combination with a spicate inflorescence and homogeneous endosperm. Hydriastele montana is most similar to H. divaricata and H. flabellata, but the former species has leaves with irregularly to subregularly arranged, divaricate leaflets and ruminate endosperm while the latter displays an entire-bifid leaf lamina or the blade is pinnate with up to six cuneate leaflets on each side of the rachis. Hydriastele montana is described in more detail by Heatubun et al. (2018). PETER PETOE, CHARLIE D. HEATUBUN & WILLIAM J. BAKER Phytotaxa 370 (1) © 2018 Magnolia Press.

Special note!! when the name was changed in 2004 to Hydriastele, the species name was changed to the old 1877 name montana. Editing by edric.



External Links

References

Phonetic spelling of Latin names by edric.

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

Special thanks to Palmweb.org, 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).

PETER PETOE, CHARLIE D. HEATUBUN & WILLIAM J. BAKER Phytotaxa 370 (1) © 2018 Magnolia Press.


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

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