ALAB ASTRA BORNEENSIA. 191 



long. Panicles terminal or in the uppermost axils, very lax, 

 up to 25 cm. in length, the branches few, spreading, the lower 

 ones up to 12 cm. in length, each primary branch with from 

 3 to 5 racemosely arranged long-pedieelled flowers. Flowers 

 5-merous, their pedicels slender, glabrous, 1.5 to 2.5 cm. long. 

 Galyx calyptrate, deciduous, 6 mm. long, lanceolate in outline, 

 longitudinally striate, acuminate, glabrous. Petals 5, linear, 

 8 to 9 mm. long in anthesis, 0.8 mm. wide, sparingly pubescent 

 on both surfaces. Stamens 10, inserted on the thickened, 

 oblong-ovoid, sparingly pubescent axis of the flower; filaments 

 pubescent, 5 mm. long. Gynopliore 2 mm. long, pubescent; 

 ovary ovoid, brown when dry, glabrous, 1 mm. long; style 1.5 

 mm. long. 



British Xortii Borneo, Sandakan, Yillamil 316, Febru- 

 ary 22, 1917, on forested slopes, altitude 80 to 120 meters, 

 the flowers white; locally known as oba. 



Among the Bornean species this is apparently most closel.y 

 allied to MeJanorrJioea macrocarpa, Engl., but has larger, less 

 acuminate, shorter petioled leaves and glabrous panicles. It 

 seems, from the description, to be more closely allied to M. 

 curtisiij Oliver, of the Malay Peninsula, than to any of the 

 previously described Bornean species. 



ELAEOCARPACEAE. 

 Etaeocarpus, Linnaeus. 



Hi is genus beautifully illustrates how little is definitely 

 known regarding the Bornean flora. There are in our comparative- 

 ly small collections of Bornean plants at least twenty-five distinct 

 species of this characteristic genus, not all of which are in condition 

 for determination, some specimens being with very young buds, 

 others with fruits only. Species previously credited to Borneo are 

 few in number and include the endemic species Elaeocarpus beccarii, 

 Aug. DC, E. gambit; Becc, E. octantlierus, Aug. DC, E. longipetio- 

 latus, Merr., and E. sericeus, Stapf ; as well as species previously 

 described from extra-Bornean material, such as E. longifolius, 

 Blume, E. obtusus, Blume (probably E. littoralis, T. & B.), E. sti- 

 pulis,. Blume, perhaps a misidentification of E. gambir, Becc, E. 

 acronodia, Mast, (not Aronodia punctata, Blume) = E. masiersii, 

 King, and E. griffithii, Mast. In view of the fact that further col- 

 lections will unquestionably yield many additions to the list of 

 Bornean species of Elaeocarpus, I have made no attempt to prepare 

 a key to the species already known from the Island, but record be- 

 low a number of species new to Borneo and describe nine as new. 

 Five or six additional forms, none of which can be referred definite- 

 ly to any described species, are represented in our collections, but 

 before reporting them additional material will be necessary in each 

 case. 



R. A. Soc, No. 77, 1917. 



