Licuala honbaensis Henderson & Nguyen Quoc Dung, 2017
publication ID |
https://doi.org/ 10.11646/phytotaxa.323.2.4 |
DOI |
https://doi.org/10.5281/zenodo.13696712 |
persistent identifier |
https://treatment.plazi.org/id/03C38781-FF8D-FFF5-FF77-69BDFB50FD7C |
treatment provided by |
Felipe |
scientific name |
Licuala honbaensis Henderson & Nguyen Quoc Dung |
status |
sp. nov. |
Licuala honbaensis Henderson & Nguyen Quoc Dung View in CoL sp. nov. ( Fig. 6 View FIGURE 6 )
Type:— VIETNAM. Khanh Hoa Province: Dien Khanh District, Hon Ba Nature Reserve, 12.100N, 108.966E, 910 m, 10 July 2010, A. Henderson & Bui Van Thanh 3694 (holotype HN!, isotype NY!).
It differs from similar species with elongate ligules and ellipsoid fruits ( L. bidoupensis , L. caespitosa , and L. glaberrima ) in its calyx with the 3 apical lobes splitting again to give 6 lobes.
Stems solitary, 1.7–5.0 m tall, 5.0–8.0 cm diameter. Leaf number not recorded; sheaths length not recorded; ligules persistent, to 70.0 cm long, hanging down below the leaf bases; petioles 170.0–200.0 m long, with stout thorns to 0.7 cm long; blades split into 31–37 segments, these with straight sides; costa continuous into central segment, forming a petiolulate base to segment; middle segment 55.0–60.0 cm long, 5.0 cm wide at apex; lateral segment 50.0 cm long, 1.7 cm wide at apex; segments briefly indented at the apex, and with minute, brown scales abaxially. Inflorescences erect amongst the leaves, 160.0–200.0 cm long, branched to 2 orders; prophylls not recorded; rachis bracts tubular, 10.0 cm long, fraying at the apices; partial inflorescences 6–9 partial; rachillae 17.0–24.0 cm long, densely covered with short, brown, felty hairs; flowers 3.0– 3.5 mm long, 2–3 borne together on a scarcely raised pedicel, the clusters distantly spaced along the rachillae; calyx 2 mm long, hairy as the rachillae, the base not tubular, the 3 apical lobes splitting again to give 6 lobes; corolla 3.0 mm long, with minute, appressed hairs distally, splitting about half way into 3, valvate petals; stamens 6; staminal ring 0.5 mm long; filaments free for ca. 0.5 mm; anthers oblong; pistil 2 mm long; fruits immature, ellipsoid.
Distribution and habitat:—Southern Vietnam in Khanh Hoa province in lowland rainforest on steep slopes at 500–910 m elevation.
Taxonomic notes:— Licuala honbaensis appears similar to a group of species having leaf segments not joined at the apices; tubular rachis bracts; long rachillae with scarcely raised, distantly spaced pedicels; small, somewhat rounded flower buds; and ellipsoid fruits. This group comprises L. bidoupensis , L. caespitosa , and L. glaberrima . It differs from these in its calyces splitting into 6 lobes, a character state previously known only in Lanonia .
Additional specimens examined. VIETNAM. Khanh Hoa province: Hon Ba Nature Reserve , road to summit, undisturbed forest on steep slopes, 12.11N, 108.98E, ca. 500 m, 4 July 2014, Henderson & Nguyen Quoc Dung 3893 ( NY, VFM) GoogleMaps ; same locality, same date, Henderson & Nguyen Quoc Dung 3895 ( NY, VFM) GoogleMaps .
A |
Harvard University - Arnold Arboretum |
HN |
National Center for Natural Sciences and Technology |
NY |
William and Lynda Steere Herbarium of the New York Botanical Garden |
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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