~ 141 — 



With Z. acuminatum and Z. odoriferum it forms a group characteri;?ed 

 by the short bracteola, which in all other species here mentioned is much 

 longer than the calyx. These species have also rather narrow more or less 

 cylindric spikes, and more or less elongate peduncles. 



11. Zingiber acuminatum Val. (1904) pag. 13, 1905 (Tab. 171) p. 249. 

 This species has been collected in different places in West Java at 



the feet of mountains. 



Describing this species at first 1 did not know Ridley 's description of 

 Z. puberulum (Ridley 1899, 130 et 1907. 29), with which it agrees in many 

 aspects. Differences are the brown fur of the leaves etc, the shape of the 

 spikes (fusiform), the lanceolate bracteole, the erect peduncles of that species. 

 Perhaps it is to be considered as a variety of it. 



There are other forms in our herbarium which though according with 

 the type in some cardinal points are rather different in other aspects. They 

 are here considered as varieties. So we get the following diagnoses. 



Z. acuminatum var. genuina. 



Herba subglabra, 3.5 metralis, caule villosulo. Folia elliptico-oblonga, 

 330 X 100, petiolo usque 10 mm. longo. Ligula 3 — 4, prope basin caulis7 — 10 

 mm., profunde retusa, puberula ad basin. Spica ovato-vel elliptico-oblonga, 

 acuminata, ad 150 mm. longa, bracteis sub apicem inflatis, apice margine 

 inflexis, appressis, laete roseis, 40X35. Bracteola 28X8, acutiuscula, 

 oblonga. Flos pallide sulfureus. Calyx 30X12. Corollae tubus 40 — 45 mm ; 

 lobi 30 et 25, labellum 28 mm X 25, lobo mediano 15 mm. longo ovato- 

 oblongo apice truncato, subretuso. lateralibus ad 4 mm. liberis suberectis. 

 Anthera 13 mm, crista paullo brevior. 



Stigma parvum cupulare, margine longiuscule setoso-ciliatum ; ovarium 

 hirtellum. Capsula trigono-oblonga 25 X 12. 



Distribution. 



In West-Java, endemic, : Salak leg. Valeton 800 M ; G. Karok near 

 Djasinga 400 — 600 M, Backer 10376; Pasir Kempul near Nirmala 1200 M, 

 Backer 11104. 



12. Zingiber acuminatum var. borneensis Val. 



Herba mediocris, pubescens. Folia subsessilia usque 280X86 mm, 

 vulgo minora, elliptico-vel obovato-oblonga acutissime attenuato-acuminata 

 basi cuneata, basi costae petiolatim incrassata, supra glabra subtus puberulo- 

 tomentosa seciis costam dense pubescentia, pilis tenuibus sub-accum- 

 bentibus. Ligula brevissima truncata angulis obtusis auriculatis hirtis. 



Spica, 50 — 100 mm. longe pedunculata, pedunculo tomentoso, dense 

 imbricato, late elliptica vel ovata, circ. 75X 35 mm. longa vel minor, 

 gibbosa, bracteis oblongis rotundatis appressis medio sub apicem convexis, 

 margine tenui villosissimo, medio apice inflexo, 40X22 mm. iongis. 



