XI ' C - 6 Merrill: Reliquiae Robinsonianae 277 



LINACEAE 



HUGONIA Linnaeus 

 HUGONIA ROBINSONII sp. nov. 



Frutex scandens glaber, ramis teretibus, ramulis plus min- 

 usve angulatis; foliis chartaceis, lanceolatis ad oblongo-lanceo- 

 latis, usque ad 20 cm longis, utrinque subaequaliter angustatis, 

 apice acute acuminatis, basi acutis, nitidis, margine crenulato- 

 denticulatis, nervis utrinque 14 ad 16, curvatis, anastomosan- 

 tibus ; inflorescentiis terminalibus, paniculatis, multifloris; sepalis 

 glabris, orbiculari-ovatis, rotundatis, circiter 2 mm longis ; petalis 

 oblongis, circiter 8 mm longis, apice obtusis, basi angustatis. 

 cuneatis. 



A scandent glabrous shrub 2.5 m long or more, entirely gla- 

 brous. Branches terete, lenticellate, pale-brownish, the branch- 

 lets dark reddish-brown, somewhat angled when dry. Leaves 

 chartaceous, shining, lanceolate to oblong-lanceolate, 11 to 20 

 cm long, 4 to 5.5 cm wide, those on the inflorescence much 

 smaller, subequally narrowed to the prominently and acutely 

 acuminate apex and to the acute base, margins rather distantly 

 crenulate-denticulate ; lateral nerves 14 to 16 on each side of the 

 midrib, curved, anastomosing, rather distinct on the lower sur- 

 face, the reticulations rather close; petioles about 5 mm long. 

 Inflorescence a terminal, somewhat leafy, many-flowered panicle 

 up to 30 cm in length, the leaves subtending the branches or 

 partial inflorescences much reduced in size, 2 to 7 cm in length, 

 the hooks stout, recurved, attaining a length of at least 5 cm. 

 Flowers numerous, orange-yellow, the bracts acicular, about 5 

 mm long, the bracteoles similar but much shorter. Sepals orbi- 

 cular-ovate, rounded, about 2 mm long. Petals oblong, about 

 8 mm long, 2.5 mm wide, rounded or obtuse at the apex, base 

 narrowed, cuneate. Stamens 10, the free parts of the shorter 

 filaments about 1 mm long, of the longer ones 1.5 mm. Ovary 

 oblong, glabrous, 1.5 mm long; styles 5, about 3 mm in length. 



Amboina, Gelela, Rel. Robins. 1783, September 19, 1913, in rocky soil 

 near small streams, altitude about 60 meters. 



A characteristic species apparently most closely allied to Hugonia pen- 

 tagyna (Warb.) K. Schum. of New Guinea, from which it differs radically 

 in its floral characters. 



ERYTHROXYLACEAE 



ERYTHROXYLUM P. Browne 

 ERYTHROXYLUM ECARINATUM Burck in Ann. Jard. Bot. Buitenz. 11 

 (1893) 191, t. 15. 

 Amboina, Wae, Rel. Robins. 185U, November 26, 1913; Hitoe messen, Rel. 



