Notes on a trip to Bukit Etam, Selangor. H.J. Kelsall (with an additional note H.N. Ridley
Lieutenant H. J. Kelsall of the Royal Engineers, accompanied on his first ascent by District Officer Mr. Lawder of Kajang, recorded two short expeditions to Bukit Etam in January 1891, producing a field narrative of the hill’s ecology, topography, and flora that H. N. Ridley of the Singapore Botanic Gardens supplemented with a taxonomic identification of the collected specimens. Published in the Journal of the Straits Branch of the Royal Asiatic Society (Vol. 23, 1891), the account documents one of the earliest systematic botanical surveys of a Selangor hill peak during the period of rapid colonial expansion around Kuala Lumpur.
Summary
Kelsall’s report is structured around two visits to Bukit Etam, a hog-backed ridge four or five miles long running north-south, situated approximately 25 miles due east of Kuala Lumpur. The first trip (1–4 January) was a joint expedition with Lawder, who had recently cut a bridle-path up the hill for the Resident’s use. The narrative traces the route from Ulu Langat along the Langat River, past the hot springs at Dusun Tuah, and up the steep western slope to the summit, where Kelsall observed a fresh rhinoceros track, extensive moss-covered stunted vegetation, and a panorama extending over Selangor, Jelebu, and Sungai Ujong. The second trip (15–18 January), undertaken alone with a small party of coolies, was explicitly aimed at collecting botanical specimens and recording temperature readings, and yielded a second sackful of orchids and a minimum temperature of 56°F at the upper camp.
The historical interest of the piece lies in its documentation of a landscape still largely unexplored by European naturalists. Kelsall notes the presence of Sakei (Semelai) inhabitants on the hill, their wind-organs, and a guide who had accompanied the explorer Cameron. The ecological observations—shifting from lowland dipterocarp jungle through a belt of giant bamboo to a stunted, moss-draped summit community—provide an early description of altitudinal zonation on a Selangor peak. The entomological observations, particularly the capture of Ornithoptera brookeana at the hot springs, add a faunal dimension to the primarily botanical account.
Ridley’s appended note transforms the field narrative into a taxonomic contribution, identifying the collected plants and flagging several as new to science or new to the Peninsula. The flora is characterised as having “a large Bornean element” alongside species common to the Perak mountains, a pattern that would become a central theme in subsequent studies of Peninsular highland botany.
Key Findings
- The hot springs at Dusun Tuah number five or six, with water temperature estimated at approximately 180°F and significant sulphuretted hydrogen emission; one spring rises directly from the river bed (p. 67–68).
- Minimum temperature recorded at the upper camp (western slope, ~500 ft below the crest) was 56°F on the morning of 18 January; the temperature inside the Sakei hut at 8:30 p.m. on 15 January was 64°F (pp. 71–72).
- A fresh rhinoceros track was found in the mud along the summit path, confirming the presence of the species on the ridge (p. 70).
- The plant list includes at least three first records for the Peninsula: Sonerila tenuifolia (previously known only from Java), Argostemma inaequale (a Javanese species), and Phaius pauciflorus (a rare Javanese orchid) (pp. 72–74).
- Ridley identifies a new species of Dendrobium (section Cadetia), a new Cælogyne (group Flaccidæ), and a new Didymocarpus with “most elegantly lobed” bright red leaves, all awaiting formal description (pp. 73–74).
- Kelsall collected 23 or more orchid species on the first trip and a further sackful on the second, plus 25 species of fern, indicating the richness of the summit flora even from a brief visit (pp. 70, 72).
Conclusion
Kelsall’s account, though modest in scope, establishes Bukit Etam as a botanically significant site with a flora dominated by Bornean affinities and several taxa unknown to the Peninsula. Ridley’s identification confirms that even a hurried five-day journey by an energetic collector could yield genuine novelties, underscoring the degree to which Peninsular highland botany remained uncharted at the close of the 1880s.
Context
- Kelsall was a Lieutenant in the Royal Engineers, a corps frequently employed in colonial infrastructure and survey work; his access to the hill was facilitated by Lawder’s bridle-path, cut for the Resident’s use, situating the expedition within the administrative apparatus of the Selangor Residency.
- The primary source material consists entirely of Kelsall’s field observations and Ridley’s subsequent taxonomic determinations from the Singapore Botanic Gardens herbarium; no archival dispatches or official reports are consulted.