2. Hapaline celatrix P.C. Boyce sp. nov.,

H. celatrix ab omnibus aliis speciebus generis concursu habitus sempervirentis, inflorescentiarum parvarum sub frondibus portatarum et inopiae appendicis valde elongati sterilis spadicis distinguibilis. H. appendiculatae et H. brownii in aspectu toto simillima est. Ab illa inopia appendicis valde elongati sterilis spadicis inflorescentiis minoribus distingui potest, et ab hac inflorescentibus minoribus sub frondibus portatis differt.

Typus: Boyce 417 (holotypus K!; isotypi BRUN!, L!, K! (siccus et spiritus sub. num. Kew. 57283), SING!). [Hapaline celator P.C. Boyce in Hay et al. in Blumea suppl. 8: 68 (1995), nom. nud.]

Diminutive, tuberous, evergreen perennial herb up to 5 cm high. Stem: tuber globose, 7 - 17 x 7 - 13 mm; stolon terete, 1 - 4 cm x 2 - 4 mm, enclosed by several papery cataphylls. Roots c. 0.2 mm in diam. Leaf: prophyll linear-triangular, up to 9 cm x 5 mm, acute to apiculate; cataphyll linear-triangular, up to 12 cm x 9 mm, attenuate to rather blunt; petiole 8 - 9 cm x 0.5 - 1.5 mm; leaf blade cordiform, 5.5 - 16 x 2.7 - 10.5 cm, thickly coriaceous to almost succulent, dark green, margins smooth, apex acuminate, posterior lobes rounded, divergent to sub-parallel. Inflorescence: solitary to several together; peduncle 3 - 6 cm x 0.5 - 2 mm; spathe 1.5 - 2 cm long; spathe limb elliptic, 1.5 - 2 cm x 6 - 10 mm, apex acute, base decurrent into lower spathe; lower spathe margins clasping, 1.5 - 3 cm x 2 mm; spadix 1 cm x 2.5 - 3 mm, free portion narrowly conic, c. 8 mm long, tapering apically in to a stout conical appendix composed of fused synandrodes. Flowers: synandria irregularly elongate in plan view, 2 - 7 x 0.75-1.5 mm; ovaries ellipsoid, 2 - 2.5 x 0.5 - 1 mm, 2 - 4 in a single row; stigma slightly prominent, c. 0.2 mm diam; style absent. Infructescence: partially enclosed by the persistent lower spathe, few-berried; berries ellipsoid to almost globose c. 3 mm in diam., stigmatic remains persistent, slightly prominent. (Fig. 2.).

DISTRIBUTION. Brunei. BRUNEI. Temburong: Sungai Temburong at Kuala Belalong, 4.32 N, 115.9 E, 20 June 1989, Boyce 358 (BRUN!, K!); Sungai Temburong at Kuala Belalong, banks of Sungai Belalong. 4.32 N, 115.9 E, 24 June 1989, Boyce 417 (holotype BRUN!; isotypes K!, K spirit 57283!, L!, SING!).

HABITAT. Disturbed mixed dipterocarp forest on river banks, Setap shales; 20 m. Hapaline celatrix differs from all other species by the combination of evergreen habit, small inflorescences borne beneath the leaves and a sterile spadix appendix. It is most similar to H. brownii and H. appendiculata. It may be distinguished from H. brownii by the its overall lesser stature and the smaller inflorescence carried beneath the leaves. Hapaline appendiculata differs by the greatly elongated sterile spadix appendix. The specific epithet comes from the Latin celator 'the concealer', in allusion to the manner in which the foliage obscures the inflorescences, a character otherwise unknown in the genus.