PALMS OF THE VALLEY OF THE AMAZON. 325 



Hob. — In sylvis nunquam inundatis ad ostia fluminis 

 Jutahi. 



Obs. — Readily distinguished from typical G. arundinacea 

 by the spadix ; from G. pycnostachys by the leaves, by 

 the subglabrous spadix, and by the rather prominent and 

 entire lip of the alveoli. 



2. Schistospadices. — Spadix ramosus, ramis simplicibus vel inferiori- 

 bus etiam ramosis. 

 \ Floris $ tubus stamineus cylindricus, ore breviter 6-dentatus. 

 \ Alveoli 3-natim verticillati (rarius 4-natim, vel sub-5-7- 

 stichi) labio inferiore integro vel emarginato. 



5. Gr. OLIGOCLONA, sp. n. (Trail hb. Palm., DOS. 171, 201 ). — 

 G. gracilis, caudicel-0"'-2-5'",diam. •012'" ; foliis -eo^-l-O" 

 pinnati-sectis; petiolo (vagina •10"' inclusa) •30"--45™ supra 

 canaliculato, pinnis trijugis, oppositis, jugis 2 inferioribus 

 confertis rhomboideo-acinaciformibus, tenui-acumiuatis 

 •20"--28 X -04 -07™, apicalibus latioribus -28 x •076'"- 

 •100™; pinnis papyraceis, nitcnti-viridibus; venis pri- 

 mariis utrinque 23-24, bis flexis, ^12 -•20™, iia pinnarum 

 inferiorum medio angulum 70''-90° cum costa efformanti- 

 bus, iis pinnarum apicalium angulum 40°-50*' ; spadici- 

 bus rubris, 4-8 in quaque stirpe infra folia ortis, pedunculo 

 erecto, spathis firmis ovatis brevibus (•035'"--060™) velato, 

 apiceinramos 2-4 (rarius 5) simplices •175™--275™X'004™, 

 ■decumbentes fisso ; alveolis 3-natim verticillatis, raro 

 6-stichis, labio inferiore integro, apiculato ; floribus iis 

 G. paniculigeriB simillimis ; fl. $ corolla calyce dimidio 

 vel duplo longiore ; fl. $ tubo stamineo lageniformi-cylin- 

 drico, ore breviter 6-dentato ; fructibus . 



Hah. — In sylvis primsevis ad Barreiras de Tunantins ; 

 et ad fl. Solimoes, ad " Barreira branca " ad fl. Jutahi, 

 floret mensibus Decembro et Januario. 



Ols, — This species is very like G. aspidiifolia, Spruce, in 

 habit, leaves, spathes, and few-branched spadix; but 

 difi'ers in the length and direction of the branches, in the 

 arrangement of the alveoles, and in the 6 -toothed staminal 

 tube of the ? fl. 



6. G. Ussiflora, Mart. (Trail hb. Palm., 59 et 116).— 

 Caudice flexuoso, 1-80 -4*80™ X •012™ ; foliis terminalibus 

 •60"-^75™ simplicibus bifurcis, vel •45™-^60™ varie pinnati- 

 sectis, pinnis 2-jugis ligulari-rlaomboideis subfalcato-acumi- 

 natis vel pinna graminea interposita ; venis utrinque 

 18-22, bis flexis, medio angulum 25^-30° cum costa 

 eflformantibus, subtus pubescentibus ; petiolo (vagina 

 inclusa) •IS™ supra profunde canaliculato; spadicibus 

 -30™--45™ rubris, pedunculo •075™-^100™ erecto, spathas 

 firmas breves (•035™-^050™) superante, ramos plerumque 

 9-10 simplices vel infimos bifidos, tenues, pendulos, 

 •25"-^30™ proferente ; alveolis ad basin rami irregulariter 

 5-6-stichis, supra 3-natim verticillatis, verticillis remotius- 

 culis, labio inferiore truncato, integro vel emarginato ; 



