153 



all along the branches, on pedicels 4 mm. long, with two small hracts at the 

 base. Calyx-lobes triangular, 1 mm. long and 1 mm. broad at the base, 

 obtuse to acute and erect in flower. Petals 2*5 by 1'5 mm., the lamina 

 reflexed in flower. Stamens with filaments 3 mm. long j anthers minute. 

 Style 3*5 mm. long. Ovary 2 mm. long by 1 mm. Pedicels, calyx, and 

 ovary thickly gland-dotted. 



This plant approaches some forms of M. tenuifolia (Sm.), Mez, but is 

 distinguished by the glabrous glandular habit, much smaller leaves, and 

 the yellow 4-merous flowers. 



JAMBOSA (CLAVIMYRTUS) ARFAKKNSIS G-ibbs, sp. nov. 



Arbor parva ; ramuli teretes, saturate brunnei. Folia coriacea, opposita, petiolata, 

 oLovata, spathulata, rigida, verisimiliter impellucida, glabra, leviter recurvata, 

 basi attenuato-cuneata, apice obtusa vel emarginata, supra crebre punctata, subtus 

 ]jar<illele venosa, striolata. Panicula axillaris vel tenninalis, cvmoso-paucifiora, 

 folia superiora excedens. Flores 1-3-ni. Calycis tubus turbinatus, basi attenuatus, 

 limbi 4-fidi laciniae subsequales, persistentes. Petala alba. Stamina filamentis 

 brevissimis stylum aequantibus. Ovarium biloculare. 



Hob. Arfak Mts., S.W. ridge, #000'. Fl. Dec. 5986. 



Largest leaf 3'5 cm. by 2*5 cm., with the midrib impressed on the upper 

 surface and prominent on the lower. Petiole +5 mm. long. Cymes 

 3-4 cm. long, with first ternate, then racemulose branching ; peduncles 

 2 cm. long. Flowers small, sessile or shortly pedicellate, with two small 

 deciduous bracteoles at the base. Calyx-tube 3-4 mm. long. Stamens 

 1 mm. long. Style 1 mm. long. Ovary bilocnlar, with a slightly swollen 

 placenta in the centre of the septum and four horizontal ovules in each 

 loculus. 



This plant is very distinct in appearance when dried, the small spathulate 

 leaves being arranged in erect pairs up the chocolate-brown stems, which 

 bear numerous inflorescences of the same colour. 



BACKHOUSIA ARFAKENSIS Gibbs, sp. nov. 



Frutex vel arbor parva ; ramuli teretes, novellis plus minus f ulvo-villosis. Folia 

 opposita, petiolata, parva, ovata, basi angustata, apice acuta, tenuiter coriacea, leviter 

 recurvata, supra glanduloso-punctulata, primo villosula mox glaberrima, nitentia, 

 subtus densius atque dilutius villosa (imprimis in costa). Flores flavidi, in cyraas 

 pedunculatas oppositas dispositi. Calycis tubus late campanulatus, villosus, 

 o-partitus. Petala 5. ovata. Stamina corolla longiora, filamenta in alabastro 

 inflexa, anthers parvse, globosai. Stylus longus, filiformis. Ovarium hirsutissimum, 

 3-loculare ; ovula plurima. Fructus (immaturus) in sicco coriaceus. Capsula calycem 

 persistentem excedens, in coccos 3 facile partibilis. 



Hob. Arfak Mts., common everywhere ; Koebre Mt., edge of shrub- 

 beries, 9000'. Fl. Dec. 5616. S.W. ridge, in small forest, 8000'. 

 Fr. (yg.). Dec. 5999. 



One of the commonest of the ridge plants, with a compact crown of 



