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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN [Vol. 8, No. 2 



piloso-sericeis granulari-glaucisque, nervis lateralibus ca. 7-8-jugis, apice 

 obtuso cuspidato, basi obtusa, petiolorum partibus liberis 3-6 mm. longis dense 

 piloso-hirsutis, vaginis 2-3 mm. longis glabrescentibus valde glaucis, stipulis 

 ad basim 2-3 mm. connatis, ad petiolum adnatis 12-14 mm. intrapetiolaribus 

 connatis 2-4 mm., lobis liberis acute triangulari-lanceolatis 5-8 mm. longis 

 dense piloso-hirsutis; inflorescentia multiflora (6) 8-12 cm. longa racemosa 

 fusco-hirsuta; bractearum subtendentium stipularibus 15-18 mm, longis, lobis 

 5-8 mm. longis dense piloso-hirsutis, bracteis lanceolatis acutis vel trilobatis 

 7-10 mm. longis extus dense pilosis intus glabris, bracteolis obovatis subacutis 

 vel obtusis sparse pilosis vel subglabris, 2-4 mm. longis ciliatis; pedunculis 

 brevissimis minus 0.5 mm. longis, pedicellis gracillimis 10-16 mm. longis hirsu- 

 tulis; sepalis lanceolatis obtusis ca. 4-5 mm. longis glabris sparse ciliatis, ma- 

 turis ampliatis 6-8 mm. longis rubris; petalis subaequalibus flavis, unguibus ca. 

 2 mm. longis, laminis suborbicularibus 4-5 mm. longis irregulariter crenulatis; 

 staminibus 8, filamentis ad basim 0.5 mm. connatis piloso-hirsutis 2.5 mm. vel 

 3.5 mm. longis; antheris 1.0-1.25 mm. longis, theca caudata apice bispinuloso- 

 aristato, aristis introrse nectantibus, connectivo vix thecis excedenti; ovario 

 glabro 2-loculari 3-stylari, stylis 2.5-3.5 mm. longis subulatis; drupis exigue 

 carnosis ovatis, 1-pyrenis, 2-locularibus, 2 seminibus. 



TYPE: small tree to 6 m. high, flowers yellow, mature sepals ampliate red, 

 frequent in broken terrain west side of cumbre at 1000 m. alt. Cerro Yapacana, 

 upper Rio Orinoco, Terr. Amazonas, Venezuela, Jan. 3, 1951, Bassett Maguire, 

 R. S. Cowan & /. /. Wurdack 30704; New York Botanical Garden. Paratypes: 

 alt. 1000 m. Cerro Yapacana, April 1931, E- G. Holt & E. R. Blake 707; small 

 tree 3-4 m. high, flowers yellow, calyx salmon pink when mature, frequent on 

 cumbre Cerro Yapacana, alt. 1200 m., Maguire, Cowan & Wurdack 30672; tree 10 

 m. high, Maguire, Cowan & Wurdack 30635; 30708; 30710, sterile shoots. 



Sipapoa hypoleuca is known from Cerro Yapacana only, but is there conspicu- 

 ous on the upper slopes and cumbre. 



3. Sipapoa ferruginea Maguire & Phelps, sp. nov. 



Frutex vel arbor parva 4 m. alta; ramulis quadriartgularibus dense rufo- 

 hirsutulis, internodiis 3-25 mm. longis; foliis oppositis, laminis oblongo- 

 ellipticis 3-4 (6) cm. longis 1-2 cm. latis coriaceis, supra glabris costa pro- 

 minula, nervis non evidentibus, subtus dense rufo-sericeis granulari-glaucis, 

 costa prominenti nervis non evidentibus, apice obtuso cuspidato, basi subobtusa; 

 petiolorum partibus liberis 1-2 mm. longis dense sericeis, vaginis 5-8 mm. longis 

 extus rufo-hirsutis intus densissime piloso-hirsutis, stipulis parvis intrapetio- 

 laribus sed non connatis deltoideo-ovatis ca. 2 mm. longis, intus glabris, extus 

 conspicue longo-hirsutis; inflorescentia floribunda terminali racemosa 5-10 cm. 

 longa, rache pedicelloque rufo-hirsutulo; bracteis caducis non visis, bracteolis 

 caducis deltoideo-ovatis 2-3 mm. longis subacutis sparse rufo-hirsutis, apice 

 conspicue ciliolato; floribus zygomorphis, sepalis subaequalibus ovatis obtusis 

 ca. 3 mm. longis carnosis ciliatis biglandularibus, maturis ampliatis 7-10 mm. 

 longis late cordato-ovatis obtusis reticulo-venosis coccineis; petalis flavis ca. 

 6 mm. longis, unguibus ca. 2 mm. longis, laminis cordato-orbicularibus, minute 

 eroso-crenatis; petalo quinto 9-10 mm. longo, ungue dilatato subconduplicato sur- 

 sum ca. 2 mm. lato ca. 4 mm. longo rubello, lamina semiorbiculari 7 mm. lata 5 

 mm. longa subcrispulata; staminibus 5-6, filamentis ad basim dilatatis brevissime 

 connatis, intus pilosis, 2 anterioribus ca. 2 mm. longis, 3 (4) interioribus 2.75 

 mm. longis, antheris introrsis, thecis oblongis ca. 1 mm. longis apice 2-spinuloso- 

 aristato, aristis nectantibus incurvis, connectivo sursum dilatato 0.5 mm. pro- 



