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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 10 



5. Upper part of stems of flowering branches and midrib, lateral nerves, and 

 face of lower side of leaf -blades minutely pilosulous to subhirtellous ; at 

 altitudes 1200-1600 m. 6. E. montana. 



5. Upper part of stems of flowering branches and lower surface of leaf- 

 blades, including midrib and lateral nerves, glabrous or nearly so; at 

 altitudes between sea level and 700 m. 

 6. Corolla-tube of staminate flower 55-70 mm long; corolla-tube of stam- 

 inate flower (excluding the expanded throat) glabrous in lower 25- 

 50 mm. 8. K. semisericea. 



6. Corolla-tube of staminate flower 15-45 mm long; corolla-tube of stam- 

 inate flower (excluding the expanded throat) glabrous only in basal 

 1-8.5 mm. 



7. Calyx of staminate and pistillate flowers minutely puberulous or 

 granular-puberulent externally. 

 8. Summit of calyx subtruncate without an obviously denticulate 

 margin; main peduncle of staminate inflorescence 1 cm or less 

 long; staminate corolla-tube mainly (20-) 30-35 (-40) mm long; 

 staminate corolla-lobes usually eight, 20-25 mm long; corolla-tube 

 within glabrous in basal 1/3. 2. K. palustris. 



8. Summit of calyx obviously denticulate; main peduncle of staminate 



inflorescence 1.5-5 cm long; staminate- corolla-tube 22-28 mm 

 long; staminate corolla-lobes usually seven, 15-20 mm long; 

 corolla-tube within glabrous in basal 1/5. 3. E. micrantha. 



7. Calyx of staminate flowers, at least, glabrous externally. 



9. Calyx of staminate flower 6-10 mm long; basal 1-2 mm of corolla- 



tube of staminate flower glabrous ; lateral pairs of nerves of leaf- 

 blades 4-7. 4. K. neblinensis. 

 9. Calyx of staminate flower 13-18 mm long; basal 5-8.5 mm of 

 corolla-tube of staminate flower glabrous; lateral pairs of nerves 

 of leaf -blades (7-) 8-13. 5. K. duckei. 



1. Kotchubaea sericantha Standi. Field Mus. Bot. Ser. 8 5 : 355. 1931 ; Ducke in 

 Arch. Inst. Biol. Veg. 4 1 : 63. 1938. 



Kotchubaea speciosa Ducke, Notiz. Bot. Gart. Berl. 11: 478. 1932; Arch. Jard. Bot. Rio de 



Janeiro 6: 99. 1933. 

 Einsteinia speciosa Ducke, Ann. Acad. Bras. Sci. 6: 106. pis. 1, 2. 1934. 

 Einsteinia sericantha (Standi.) Ducke, Ann. Acad. Bras. Sci. 7: 181. 1935. 



Distribution. Amazonian Brazil and Peru. 



BRAZIL. Amazonas: prope Fonteboa, regionis fluvii Solimoes; silva humosa 

 non inundabile ; arbor media ; floris albis odoratis ; 26 Nov 1927, A. Ducke 22911 

 (isotype^ of Kotchubaea speciosa, NY, US, photo of isotype of K. speciosa from 

 P at F; staminate); Manaos, ad urbem; in silva non inundabili loco leviter 

 paludoso; 15 Apr 1932, Ducke 24008 (isotype of Einsteinia speciosa, NY; pistil- 

 late) ; same locality and date, Ducke 24007 (isotype of Einsteinia speciosa, NY; 

 staminate) ; Tefe; arvore pequena de 5 metros; 20 Oct 1948, Tires 1304 (2 sheets, 

 NY) ; circa cataractum Porteira fluminis Trombetas, Ducke 22921 (RIO) ; 

 Manaos, loca Pensador ; silva. non inundabili loco humido ; arbor parva ; flor. 

 albis odoratis; 4 Dec 1936, Ducke 270A (NY, 2 sheets; staminate) ; Manaos, loco 

 Cachoeira do Mindu; silva non inundabili leviter paludosa; 14 Apr 1936, Dueke 

 270 (NY, 2 sheets; pistillate); Manaos, Pensador; silva non* inundabili ; loco 

 humido; arbor parva; flor. albis odoratis; 4 Dec 1936, Ducke 162 (NY; stam- 

 inate) ; Manaos, Cachoeira do Mindu; silva non inundabili aliquanto paludosa; 

 14 Apr 1936, Ducke 165 (NY; pistillate). PERU. Dept. Loreto: Mishuyacu, near 

 Iquitos ; forest ; alt. 100 m ; tree 12 m high ; flowers white ; April 1930, G. King 

 1260 (holotype of Kotchubaea sericantha, F, isotypes, NY, US). 



