Riedelia, Plagiostachys. 375 



Nota. Materiem in quam auctor hanc speciem condidit non pro optima habere possumus; 

 flores certe ad genus Biedeliae pertinent; num autem flores illi ramos inflorescentiae defloratos 

 re vera olim ornaverint non omnino certum est, Investigationibus futuris serius hanc quaestionem 

 recommendo. 



32. Plagiostachys Rldley.*) 



Plagiostachys Rldley in Journ. Asiat. See. Bengal (1899) \'6\. — Älpiniae sp. Bak. 

 in Kew Bull. (1 898) 235. — Ämomi sp. Ridley in Trans. Linn. Soc. 2. Ser. III. (i 893) 381. 



Calyx tubulosus vel turbinatiis unilateraliter spathaceo-fissus. Corollae tubus 

 calycem subaequans crassus, lobi oblongi vel ovati subcarnosi posticus manifeste cucul- 

 latus. Labellum planum oblongum subintegrum vel bilobum ; staminodia lateralia brevia 

 acuta dentiformia vel subulata. Filamentum breve et crassum puberulum ut anthera 

 connectivi appendicula haud munita. Capsula oviformis brevis vel ellipsoidea exocarpio 

 tenui. Semina pauca (3 — 4) pro loculo angulata. — Herbae perennes validae elatae. 

 Spica lateraliter vaginas caulis foliosi 30 cm vel altius supra basin transgrediens inter- 

 dum subramosa, pedunculata i. e. axi plus minus exserto, pedunculo squamis pluribus 

 ovatis instructo, crassa; flores solitarii pro bractea plurimi, parvi et subcarnosi. 



Species 2 peninsulam malaccensem et Borneo inhabitant. 



Nota. Hoc genus positionem intermediam inter J.w?o/^^^<w^ et J.^p^V^^am tenet; ab ambobus 

 spicis lateralibus diversum. 



Conspectus specierum. 



A. Spica 7 cm longa, bracteae ovatae extus subsericeae apice in- 



tegerrimae; Borneo i. P. strohilifera. 



B. Spica subduplo longior, bracteae oblongae glabrae apice lacerato- 



fissae; Malacca 2. P. lateralis. 



1. P. strobilifera (Bak.) Ridley in Journ. Asiat. Soc. Bengal (1899) 151. — 

 Älpinia strohilifera Bak. in Kew. Bull. (189 8) 2 3 5. — Caulis ad 60 cm altus validius- 

 culus. Folia vix petiolata lanceolata attenuato-acuminata basi acuta utrinque at subtus 

 densius tomentosa ad 1 4 cm longa et 7 cm lata; vagina tomentosa; ligula 3 mm longa 

 obtusa pubescens. Spica densissima subconica vagina extus sericea suffulta lateraliter 

 e vagina egrediens 7 cm longa; rhachis tomentosa. Flores breviter pedicellati pro 

 bractea solitarii; bracteae fuscescentes membranaceae 6 mm longae ovatae extus pube- 

 rulae; ovarium sericeum; calyx tubulosus trilobus ruber 8 mm longus unilateraliter 

 lissus; corollae rubrae tubus vix calycem medium aequans; lobi oblongi, dorsalis cucul- 

 latus; laterales breviores; labellum oblongum bilobum apice aurantiacum basi magis in 

 rubrum vergens; anthera oblonga rubra 4 mm longa pilosa. 



Sunda-Inseln: Britisch-Nord-Borneo, am Bongaya-Fluss ; bei Sandakan (Creagh). 



2. P. lateralis Ridley in Journ. Asiat. Soc. Bengal (1899) 152. — Amomum 

 laterale Ridley in Trans. Linn. Soc. 2. Ser. III. (1893) 381. — Caulis bimetralis e 

 rhizomate crasso. Folia ad 2,5 cm longe petiolata lineari-lanceolata acuminata obscure 

 viridia 75 cm longa et 9,5 cm lata; ligula 6 mm longa obtusa biloba. Spica 14 cm 

 longa ad 30 cm supra solum e vagina egrediens crasse cylindrica pedunculo squamis 

 ovatis velato suffulta; bracteae oblongae margine fimbriatae; calyx 6 mm longus sub- 

 turbinato-tubulosus albus; corollae rubrae tubus aequilongus, lobi ovati acuti subcarnosi; 

 labellum obtusum subemarginatum flavido-aurantiacum papillosum ; staminodia denti- 

 formia acuta brevia; filamentum breve puberulum; anthera oblonga villosa alba; nectarii 

 glandulae 2 lamellosae emarginatae. Capsula 1,2 cm longa turbinata tenuiter coriacea 

 palhde fusca; semina 3 — 4 pro loculo. 



Hinter-Indien: Halbinsel Malakka, in Wäldern bei Singapore, auch in der Land- 

 schaft Negri Sombilan (Ridley). 



*) n)^äyiog, lateralis, obliquus ; axä/vs. spica. 



