Florae Malesianae Precursores XLII. Notes on Sapindaceae II. Tristiropsis

Ramuli 8 mm crassi, novelli dense ferrugineo-tomentelli, vetustiores glabrescentes. Petiolus 8 cm longus; petioluli 1—2 mm longi; foliola alterna vel rarius (sub)opposita, ovato-oblonga vel -lanceolata, 5—10 cm longa, 1¾—3 cm lata, subtus in nervorum axillis breviter barbata, supra in costa tomentella, ceterum glabra, basi decurrentia, apice subcaudato-acuminata, acumine acuto, costa supra prominula, nervis primariis utrinque c. 15, subcurvatis, in superiore dimidio foliolorum tantum arcuato-anastomosantibus, subtus prominulis, intermediis nervis primariis ± parallelis. Thyrsi usque ad 17 cm longi, ut ramuli novelli tomentelli; pedunculi 2—3½ cm longi; pedicelli 1—2 mm longi. Sepala late ovata vel late obovata, 2½ mm longa, 2¼ mm lata, ut videtur haud petaloidea, intus subdense adpresse pubescentia, integra. Petala per 1¼ mm unguiculata, lamina transverse semi-elliptica, 1 mm longa, 1½ mm lata, ad marginem unguis lanata, ceterum dense ciliata, intus (unguie lamina densius) lanata; squama lamina dimidio brevior, biloba, lanata. Discus 5-lobatus, lobis annuli forma, profunde excavatis, parte centrum floris spectante dense pilosa excepta glabris. Stamina 8; filamenta 2 mm longa, in parte 2/3 inferiore subdense lanata; antherae ¾ mm longae, glabrae. Pistillodium pyriforme, 1½ X 1 mm, dense adpresse pilosum. BORNEO. Sarawak: Baram Distr., G. Api, Melinau Gorge, c. 200 m, fl. 15-7-1961, Anderson 4626 (L).- E. Borneo: E. Kutei, Sg. Menubar, Sangkulirang, 15 m, st. 13-6-1951, Kostermans FRI. bb. 34689 (L) vern. laras; Mt Medadam N. of Sangkulirang, 400 m, fr. 9-8-1957, Kostermans 13428 (L); Berau, Mt Njapa on Kelai River, 100 m, fr. 17-10-1963, Kostermans 21330 (L). — Sabah: Mt Kinabalu, Koung, 500 m, fl. 8-5-1933, Carr SF. 27276 (SING) Typus.