92. ZINQIBEMACEM. [ 1. Gastrochilus. 



2-sexual. Perianth of two 3-merous whorls. Calyx tubular 

 3-toothed often spathaceous. Corolla with three equal or 

 unequal segments. Outer whorl of stamens absent or of 

 two often petaloid staminodes (lateral staminodes). Inner 

 whorl of a single perfect posterior stamen and of two petaloid 

 staminodes connate into a ' lip. ' Ovary inferior 3-celled 

 with many axile ovules, rarely 1-celled with 3 parietal 

 placentae. Style slender passing along a channel in the 

 stout filament and connective, the large stigma projecting be- 

 yond the anther. 



Three species of Globba with parietal placentation occur in Chota 

 Nagpur, all the following have axile placentation. 



1. Lateral staminodes developed, broad petaloid. 



a. Stems very short or 0. 



Fls. large showy, exsert from a very short spike . 1. Gastrochilug. 

 Fls. in denBe spikes crowned by a coma of 

 coloured bracts 2. Curcuma. 



b. Flowering spikes terminating a well-developed 



leafy stem 3. Hedychium. 



2. Lateral staminodes undeveloped or small. Leafy 

 stems well developed. 



a. Fls. in dense cone-like spikes, radical or 



terminating the stem. 



Spikes radical sub -sessile. Connective with a dila- 

 ted crest ........ 4. Amomum. 



Spikes peduncled or terminating the stem. Connec- 

 tive not dilated, usually tapering above . . 5. Zingiber; 



Spikes terminal. Filament petaloid with the 



anther adnate . . . . . ,6. Costus. 



b. Flowers panicled. Panicle terminating a tall 



leafy stem ....... 7. Alpinia. 



1. Gastrocliilus, Wall. 

 L G, longiflora, Wall. 



A beautifnl herb with oblong leaves 12-16* by 4-5J 

 pale and glistening beneath and large white lipped flowers 



538 



