- 128 - 



a broad, sometimes inflexed appressed marge. Two lowest bracts 

 (one vacuous) much inflated and large. Leaves lanceolate. Ligula 

 large very thin entire, sometimes lacerate, 

 a^. Inflorescence ovate rounded. Bracts convex and subinflated, 

 truncate or broadly rounded above, with a broad inflexed margo. 

 Flowers rather large (55 mm.). Lip very pale mottled pink 

 and yellow. Staminodes, same colour, half as tall, obovate, 

 erect, a little shorter than dorsal petal. Leaves large. Leafbase 

 rounded. Rhizome iuternally ink-coloured. Z. Ottensii. 



h^. Bracts a little convex in the center, margo not inflexed or 

 only near the top of the spike. Lip pale yellow, white of 

 orange. Rhizome yellow or pale yellow, 

 a''. Inflorescence fusiform acute, smooth, margo of the bracts 

 rather narrow. Flowers large, pale yellow. Lip bifid unto 

 the middle with somewhat diverging lobes. 

 a=. Inflorescence elongate, bracts numerous: Z. littorale, 

 b^. Infloresence rather small, bracts few: Z. papuanum. 

 b'. Inflorescence subglobose or ovate. Margo of the bracts 

 broad, conspicuous, hairy. 



a^ Inflorescence obtuse bright pale green, aftewards 

 red, margo of bracts whitish sparsely hairy, flowers 

 large, white, staminodes round, leaves almost glabrous : 



Z. Zerumbet. 



b^. Inflorescence obtuse olivaceous or dark brown, after- 

 wards brown red, margo of bracts densely villous, lip 

 orbicular, staminodes round, flowers small, orange, lea- 

 ves very hairy. Z. aromaticum. 

 c^. Inflorescence acute, olivaceous, flowers small, pale yel- 

 low, lip narrow, staminodes erect oblong quite free, lea- 

 ves often very hairy. Z. amaricans. 



Survey of species and of their distribution. 



1 Zingiber officinale Rose. 1807, 348; 1828, t 83; Bl. 1827, 42; Ridley 

 1899, 127; 1907, 30; Bentley Trimen 1888, t. 270; K. Schum 1904, 170; 

 Gagnepain 1908, 82. 



Peduncle thin, glabrous; scales appressed, glabrous, often with a small 

 foliate mucro at their top. 



Spike elliptic-fusiform (60X25) quite glabrous. Bracts elliptic (28 X 20) 

 with a very small mucro, with a narrow membranous margo, lowest bract 

 larger and sterile, but shaped like the rest, inserted 10 mm. below the spike. 

 Bracteola as long as the bractea, elliptic (if laid out 25X12 mm.), acute. 

 Calyx as long as half the tube (12 mm.) with 3 obsolete, blunt teeth. Tube 



