Nepenthes ×bauensis

Nepenthes ×bauensis


Nepenthes ×bauensis Chi.C.Lee in Sarawak Mus. J. 59(80) Special Issue 6: 173. 2004 sec. Lee 2004
    • Type: Gn. Umbut, 26 Mar 02. Limestone, opened area, foothill. Meekiong, K., SBC 2701


Terrestrial climber or scrambler to 2 m high. Climbing stems triangular to rounded, 6 mm diam., internodes 3.0-4.5 cm.
Leaves of the climbing stems coriaceous, sessile, lanceolate to slightly oblong-lanceolate 16-18 by 2.5-3.0
cm, apex acute, occasionally sub-peltate, base narrowing and decurrent into stem wings extending ½–¾ length of internode.
Upper pitchers subcylindrical, slightly swollen in the lower half and slightly expanded below the mouth, 14.0-14.5 by 3.0-3.7 cm, with two fringed wings extending down the entire length of the pitcher; mouth ovate; peristome rounded to slightly flattened in cross section, 0.2–0.6 cm wide, ribs c. 0.4 mm apart; lid as large as or larger than mouth, broadly elliptic to suborbicular, 4.5-5.0 by 3.0-3.5 cm; spur simple, to 4 mm long.
Male inflorescence length unknown; peduncle 6.0 cm long; partial-peduncles 2-flowered, bracts absent, to 1.6 cm below the branch, with each branch to 1.0 cm long; tepals ovate, to 4.0 mm long; androphore c. 1 mm long. Female inflorescence unknown.
Indumentum absent from all parts except for outer surface of pitcher which consists of scattered short simple brown hairs.A


This hybrid represents a natural cross between N. gracilis and N. northiana. It was recorded from a single location in the Bidi area in Bau growing in the immediate vicinity of N. gracilis and N. northiana. There are no other possible parental species in the area which could contribute to the combination of vegetative and flower characteristics shown by this plant. As with most wild Nepenthes hybrids this taxa represents a form somewhat intermediate between the two putative parent species. It can be distinguished from N. gracilis by the more robust stems and coarse foliage, as well as the 2-flowered partial peduncles and much larger inflorescence. The pitchers are larger and distinctly broader than those of N. gracilis, with a wider peristome and more elliptical lids.A

Hybrid parent formula

N. gracilis × N. northianaB


A. Lee, C.C. 2004: Nepenthes. – Sarawak Mus. J. 59(80) Special Issue 6: 171-177
B. McPherson, S. R. & Robinson, A.S. 2012: Field Guide to the Pitcher Plants of Borneo. – Poole: Redfern Natural History Productions


CountryDateCollector + collecting numberHerbariaTypeScanDerivatives
Gn. Umbut, 26 Mar 02. Limestone, opened area, foothill. Meekiong, K., SBC 2701
Citation: Gn. Umbut, 26 Mar 02. Limestone, opened area, foothill. Meekiong, K., SBC 2701