SCITAMINE^E. 215 



172, fig. 24. 



HAB. Taihoku, cult. leg. Y. SHIMADA, Aug. 1914. 



SCHUMANN notes " Vorder- und Hinter-Indien. Die Pflanze wird nirgends 

 mehr in dem Zustande des Indigenats getroffen." 



Alpinia LINN. 



On working up my collections of this genus, I have principally followed 

 K. SHUMANN'S monograph appeared in ENGLEK'S " Das Pflanzenreich." But, the 

 delimitation of the subgenera is not quite applicable to the Formosan species. 

 Both primary and flowering bracts are usually very deciduous and sometimes 

 altogether wanting, and therefore it is difficult to determine the subgenera 

 by the bracts. For convenience sake, I have divided the genus by the general 

 characters of the plants, without taking any special reference to the primary 

 and flowering bracts. 



Conspectus of the subgenera 



Bracts small, even the largest does not exceed 1 cm. in length ; flowers 

 small usually racemosely paniculate. I. Autalpinia. 



Bracts none or very small ; flowers middle-sized densely spicate or rarely 

 racemose. II. Prdbolocalyx. 



Bracts very large, even the smallest not shorter than 1 \ cm. in length, 

 perfectly enclosing flower-buds ; flowers large, racemose or paniculate rarely 

 densely spicate. III. Catinibium. 



Subgenus I. Autalpinia 



1. Leaves elongately oblong, not longer than four times than broad 



A. oblongifolia. 



Leaves linear-lanceolate or lanceolate, longer than four times than 

 broad 2. 



2. Lips shortly and obtusely 2-lobed at the apex A. kelungensis. 



Lips acutely 2-lobed at the apex A. sp. 



Alpinia oblongifolia HAYATA sp. nov. (Fig. 79-d, e). Caulis circ. 56 cm. 

 longus glaber. Folia oblonga vel oblongo-lanceolata 21 cm. longa 6 cm. lata 

 apice acuminata, acuminibus angustissime linearibus, basi rotundata vel ro- 

 tundato-cuneata utraque glabra membranacea margine hand hirsuta, ligulis 

 oblongis se latere interiore connatis. Panicula 10-12 cm. longa cum floribus 



