identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
577987927702FFE3FF37A491FBD75096.text	577987927702FFE3FF37A491FBD75096.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Dichapetalum salicinum Rafidah & C. L. Lim. A. Habitat. B. Habit 2025	<div><p>Dichapetalum salicinum Rafidah &amp; C.L.Lim sp. nov. (Fig. 1 &amp; 2), Map 1</p><p>Type:-- MALAYSIA. Peninsular Malaysia: Terengganu, Jambu Bongkok F.R., 22 February 2025, Rafidah &amp; Nik Faizu FRI 108082 (holotype KEP; isotype SING) .</p><p>Scandent shrub, reaching the forest canopy. Twigs tough, slightly zigzag. Young to old branches with appressed hairs, with sparse lenticels. Stipules narrowly triangular, 1–2 mm long, appressed hairy, persistent. Leaves alternate, adaxially greenish when dry; petiole brown, 4–6 mm long, hairs densely appressed; lamina very narrow linear-lanceolate, 7.0–20 × 1.0– 1.8 cm, bright green, slightly shining above (when fresh), pale green beneath, chartaceous, apex acute, base cuneate, slightly oblique, margin entire, without glands; midrib prominent on the lower surface, secondary veins 4–5 pairs, anastomosing on both surfaces, tertiary veins reticulate. Inflorescence cymose, axillary, borne on pedicels near to junction with lamina, with many flowers. Bracts and bracteoles ovate-triangular. Pedicel up to 5 mm long. Flowers: sepals 5, recurved when mature, c. 2 mm long, densely brown tomentose outside, glabrous on the apical part inside, recurved. Petals with 5 lobes, bifid near to the base, broadly spathulate, apex lobed or subentire, glabrous. Stamens 5, free, alternating with and about equal to or slightly longer than petals, filament c. 2 mm long, glabrous, anthers c. 1 mm long, basifixed, opening by a longitudinal slit; nectary present. Staminodes unknown. Pistil shorter, depressed globose, ovary bilocular or trilocular, with 2 pendulous ovules in each loculus, densely lanate on exterior, shortly velutinous; style one, lanate at base, glabrous above, stigma trifid. Fruit greenish-brown, 1–1.2 × 1.0– 2.2 cm, reniform, often with 2 to 3 lobes, densely brown velvety with white villous hairs. Seed 1 per locule.</p><p>Phenology:— Flowering and fruiting in between December to March.</p><p>Habitat:— In open areas, about 70% sunlight, in coastal heath forest in Jambu Bongkok F.R., Terengganu.</p><p>Etymology:— The leaves resembling those of the willow, Salix spp. ( Salicaceae).</p><p>Preliminary IUCN conservation status:— Critically Endangered B1+2ab (ii, iii, iv). Dichapetalum salicinum is known only from a single locality, where it appears to have a highly restricted distribution and low population density. Its habitat lies outside protected areas and is vulnerable to forest fires during dry seasons, which can damage or kill the host trees that this scrambling shrub depends on for growth and support (Fig. 3). Despite several botanical surveys conducted in similar vegetation types in the surrounding area, the species has not been recorded elsewhere. This indicates its extreme rarity and suggests that even small disturbances could have serious consequences for its continued survival.</p><p>Other specimens examined:— MALAYSIA. Peninsular Malaysia. Terengganu, Jambu Bongkok F.R., 16 October 1983, Kamarudin KMS 1052 (UKMB) ; 11 March 1984, Zainudin AZ 1270 (UKMB) ; 20 June 2023, Rafidah et al. FRI 104445 (KEP) ; 20 December 2024, Rafidah &amp; Nik Faizu FRI 108080 (KEP) .</p><p>Discussion:— Dichapetalum salicinum is morphologically similar to D. tenuifolium, particularly in the presence of anastomosing secondary veins on both adaxial and abaxial surfaces and fruit with 2 or 3 lobes but differs in leaf sizes. This species is unique among other species in the genus for its adaptation to coastal heath forest, unlike most species which are typically found in lowland to hill forests, or limestone and swamp habitats.</p><p>In young plants, some lenticels on the twigs greatly enlarge and look like a fruit (Fig. 4). However, they are galls from the lenticels, the result of some insect that causes harm by tunnelling into the wood. Gall formation is usually the result of a specific plant-insect interaction, often involving chemical manipulation of plant tissues (Stone &amp; Schönrogge 2003). These relationships can be highly host-specific and may indicate co-evolutionary adaptations (Price et al. 1987).</p><p>Since this is a newly described species, further research is needed to understand how gall formation might affect its reproduction, for example, whether it reduces flowering or fruiting. This is important because the species appears to be rare and may be vulnerable to small changes in its environment. Genetic studies could also help to assess how much variation exists within its population, and whether the gall-forming insect is closely linked to this species. This information would be useful for future conservation and ecological understanding.</p></div>	https://treatment.plazi.org/id/577987927702FFE3FF37A491FBD75096	Public Domain	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.		Plazi	Rahman, Rafidah Abdul;Lu, Lim Chung;Hassan, Nik Faizu Nik	Rahman, Rafidah Abdul, Lu, Lim Chung, Hassan, Nik Faizu Nik (2025): Dichapetalum salicinum (Dichapetalaceae), a new narrowly leaved species from Peninsular Malaysia. Phytotaxa 734 (3): 281-288, DOI: 10.11646/phytotaxa.734.3.4, URL: https://doi.org/10.11646/phytotaxa.734.3.4
577987927707FFE6FF37A027FAF9520C.text	577987927707FFE6FF37A027FAF9520C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Dichapetalaceae	<div><p>Dichapetalaceae in Peninsular Malaysia</p><p>In Peninsular Malaysia, there are now nine species with three endemics. A key to the taxa is provided below. A full revision of the family Dichapetalaceae is scheduled for Volume 12 of the Flora of Peninsular Malaysia.</p></div>	https://treatment.plazi.org/id/577987927707FFE6FF37A027FAF9520C	Public Domain	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.		Plazi	Rahman, Rafidah Abdul;Lu, Lim Chung;Hassan, Nik Faizu Nik	Rahman, Rafidah Abdul, Lu, Lim Chung, Hassan, Nik Faizu Nik (2025): Dichapetalum salicinum (Dichapetalaceae), a new narrowly leaved species from Peninsular Malaysia. Phytotaxa 734 (3): 281-288, DOI: 10.11646/phytotaxa.734.3.4, URL: https://doi.org/10.11646/phytotaxa.734.3.4
577987927707FFE7FF37A0B6FA595616.text	577987927707FFE7FF37A0B6FA595616.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Dichapetalum	<div><p>Key to Dichapetalum species in Peninsular Malaysia</p><p>1 Leaves very narrowly linear-lanceolate, more than seven times longer than wide, less than 20 mm wide .. 6. D. salicinum sp. nov.</p><p>Leaves elliptic, oblong or ovate, more than 20 mm wide ..................................................................................................................2</p><p>2 Young twigs, petiole and lower leaf surface hispid, hairs 1.5–2.5 mm long. Leaf base slightly cordate. Fruits densely shaggy........ .......................................................................................................................................................................................2. D. griffithii</p><p>Young twigs, petiole and lower leaf surface pubescent, hairs to 0.8 mm long or glabrous. Leaf base attenuate, cuneate or rounded. Fruits not densely shaggy ...................................................................................................................................................................3</p><p>3 Lamina membranous, wrinkling when dry. Lamina elliptic-oblong to elliptic-lanceolate, 3 or 4 times longer than wide, 16–22 × 4.5–6.5 cm. Fruits 2–3 lobed ................................................................................................................................... 8. D. tenuifolium</p><p>Lamina thinly to thickly coriaceous, not wrinkling when dry. Lamina if narrowly lanceolate then up to 3 times longer than wide. Fruits entire.........................................................................................................................................................................................4</p><p>4 Inflorescence a sessile glomerulus or with peduncle to 3 mm long...................................................................................................5</p><p>Inflorescences paniculate, stalked, peduncle at least 5 mm long .......................................................................................................6</p><p>5 Leaves glabrous, lateral veins 4–7 pairs. Fruits longer than broad or globose, 10–20 × 10–15 mm, tuberculate, glabrescent ........... ............................................................................................................................................... 1. D. gelonioides subsp. tuberculatum</p><p>Leaves roughly hairy beneath, lateral veins 7–10 pairs. Fruits broader than long, or globose, 15–35 × 25–35 mm, smooth, velvety ................................................................................................................................................................... 5. D. longipetalum</p><p>6 Inflorescence a long, much branched panicle 25–90 mm long ...................................................................................9. D. timorense</p><p>Inflorescence a few-flowered panicle 17–25 mm long ......................................................................................................................7</p><p>7 Leaves subcoriaceous, veins raised on the lower surface............................................................................................ 7. D. sordidum</p><p>Leaves coriaceous, veins not raised on the lower surface ..................................................................................................................8</p><p>8 Young twigs and petiole hairy. Lamina usually oblong, apex sharply acuminate.................................................. 3. D. helferianum</p><p>Young twigs and petiole glabrous. Lamina usually broadly oval, apex bluntly acuminate .................................. 4. D. laurocerasus</p></div>	https://treatment.plazi.org/id/577987927707FFE7FF37A0B6FA595616	Public Domain	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.		Plazi	Rahman, Rafidah Abdul;Lu, Lim Chung;Hassan, Nik Faizu Nik	Rahman, Rafidah Abdul, Lu, Lim Chung, Hassan, Nik Faizu Nik (2025): Dichapetalum salicinum (Dichapetalaceae), a new narrowly leaved species from Peninsular Malaysia. Phytotaxa 734 (3): 281-288, DOI: 10.11646/phytotaxa.734.3.4, URL: https://doi.org/10.11646/phytotaxa.734.3.4
