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Gastrochilus striatum Val, ri.sp. (Tab.^ nostra 13) 



Herba parva glabra. Rtiizoma tenue repens stoloniferum, Gaulis asceti- 

 dens foliatus iti apice rhizoinatis, bulbo nullo, elongatus brevis, vaginis 

 foliorum alternantibus et dense irnbricatis vestitus, cum bracteis 4: 100 

 mm longus, denudatus + 25mm, longus 50. Folia saepe 7, biseriata vagi- 

 nis imbricantibus breviter vel brevissime petiolata oblongo-lanceolata acuta 

 basi acuta vel attenuata, subcoriacea, sive pergamacea, glabra, in sicco longi- 

 tudinaliter striata, costa subtus prominente, venis ascendentibus costae sub 

 parallelis, densis prominulis, vaginae ad foliorum laminas fere longitudine 

 accedentes, in foliis superioribus 2/3 folii aequantes, in herbario stramineae 

 dense costulato striatae, margine lato membranaceo, ligulae \oh'is valde elon- 

 gatis linear ibus acutis terminato. 



Spica abbreviata in apice caulis sessilis, vaginae folii summi normalis 

 cum bractea singula vaginiformi lata, folio opposita, inclusa. Bracteolae 

 florem involventes numerosae, membranaceae apice acutae. 



Calyx corollae tubo multo brevior subtruncatus, tenuis, corollae tubus 

 bracteam nunc circ. aequans; ovarium lineare ovulis ad placentam centra- 

 lem adhaerentibus, septis evanidis. Petalum dorsale rostrato-cucullatum, fila- 

 mentum longiusculum, anthera angusta appendiculo, ipsi 1/3 breviore, obo- 

 vato, lobo mediano projecto 3 denticulato, lateris incurvis, thecae contiguae 

 lineares basi attenuata. 



The stem with the leafsheaths is ± 100 mm. long, if the latter be removed, 

 only 25-50 mm. The mean length of the sheath is 50-80 mm. The leaf- 

 blades which get taller getting nearer the top are 60 X 6 (the outmost one) 

 to 140 X 24 (the innermost one) of one herb. Petiole 5-15 mm; ligula 

 8-12 mm long. Spike very short, included (as in G. pandiirata and G. Cur- 

 tisii) between the sheath of the innermost leaf and a large sheathlike bract 

 opposite to it. The flower measures 40 mm, the calyx 15, the bracteole 40; 

 the upperpart of the flower has been destroyed with the exception of the 

 dorsal lobe which is cucullate as in G. panduraium and the upperpart of 

 the stamen; here the contiguous linear thecae, 3-5 mm long, adnate to the 

 borders of the incurved connective and crowned by the obovate 2-5 mm 

 long rather broad appendix, which has a projecting '/2 mm- long three-toothed 

 midlobe are very well preserved. The anther seems very much to 

 resemble that of G. grandifolium, only the thecae are rather long and 

 attenuate at their base, and there .are no pores visible allthough the 

 content of the cells has been lost. 



Habitat : West-Borneo, Singkadjang, a vilage in the lake district of the Ka- 

 poeas, near Sintang, Teysmann 10992, (23 aug. 1874; nom ind. "Rassa smilu"). 



This species was named "striatum'' because of the (in a dried state) 

 very conspicuously striate or ribbed, somewhat shining, very tall and broad 

 sheaths. The flower was much damaged, but the stamen was rather good 



