Schismatoglottis trivittata Hallier

Wong, Sin Yeng & Joling, Jyloerica, 2021, Checklist of aroids (Alismatales, Araceae) from Sabah (Malaysian Borneo), Check List 17 (3), pp. 931-974 : 967

Schismatoglottis trivittata Hallier

Material examined. MALAYSIA – Kudat • Banguey island ; [07°15′08″N, 117°09′23″E]; 6 April 1905; P. Cas- tro 1343 (P) .

Identification. The current concept of Schismatoglottis trivittata is of a variable, widespread and rather scattered species. In inflorescence it is only distinguishable from S. niahensis A.Hay by the sterile interstice usually lacking a zone of sterile anthers and by the connective being less clearly elevated into a low peak between the thecae. However, the leaf is relatively shorter and broader, without the very broad midrib and primary veins characteristic of Schismatoglottis niahensis A.Hay. More importantly, the stem is hypogeal and hapaxanthic in S. trivittata where it is epigeal and pleionanthic in S. niahensis ( Hay and Yuzammi 2000) .

Distribution and ecology. Widespread but scattered in Sabah. Lowland rainforest floor and elevated soil patches in swampy forest, and low montane forest; sea level to 1000 m elev.

Schismatoglottis trusmadiensis A.Hay & J.Mood

Literature cited. MALAYSIA – Pedalaman • Tambunan, Kengaran Distr., Trus Madi, Cult. Haleiwa, Hawaii J. Mood s.n (orig. coll. Mood M791a) (holo NSW + NSW spirit).

Identification. This species is similar in leaf shape to the more robust S. moodii . It differs from that species in the female zone of the spadix relatively longer and half adnate to the spathe, the shorter interpistillar staminodes, the stamens with small pores separated by a rather thick connective, the obtusely conoid appendix not abruptly thicker than the male zone, and the smaller diameter appendical staminodes ( Hay and Yuzammi 2000).

Distribution and ecology. Schismatoglottis trusmadiensis is endemic to Sabah. Known only from the type locality on Gunung Trus Madi. Terrestrial in secondary forest at 920 m elev.

Schismatoglottis unifolia A. Hay & P.C. Boyce Material examined. MALAYSIA – Pedalaman • Keningau, Ulu Senagang sub-station; 05°21′60′′N, 116°01′34′′E; 566 m elev.; 18 May 2010; Markus G. SAN 151778 ( SAN) • Tenom, Ulu Senagang ; 05°21′01″N, 116°01′03″E; 470 m elev.; 21 October 1999; P. C. Boyce 1432 (K) .

Identification. Schismatoglottis unifolia is known only from the type locality. The affinities of this species are rather unclear, as it has hapaxanthic shoots restricted to the Schismatoglottis calyptrata group, but it also has irregular abscising and disintegrating (rather than caducous) spathe limb implying it to the Schismatoglottis asperata group. Schismatoglottis unifolia has unusual breeding system in the genus as the male zone held within the lower spathe chamber like in Schismatoglottis pudenda A.Hay and Schismatoglottis grabowskii Engl. ( Hay and Yuzammi, 2000) .

Distribution and ecology. Endemic to Sabah. Terrestrial

in deep leaf litter over sandy loam in secondary gallery forest on a steep slope, at 470 m elev.