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MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[vol. 10 



For description see Amshoff, Fl. Surin. 3: 66 (1951), or Berg, Linnaea 27: 

 15-17 (1855) [as M. obtusa (Benth.) Berg, or M. suffrutioosa Berg]. Type from 

 French Guiana, but apparently rarely collected there ; frequent in Suriname 

 and British Guiana. Various collections from the Tafclberg are cited by Amshoff 

 in Bull. Torrey Club 75: 530. (1948). 



33. Marlierea multiglomerata Amshoff, Rec. Trav. Bot. Neerl. 42: 3. 1950. 



For description see Amshoff, I.e. or Fl. Surin. 3: 67 (1951). Along the Maro- 

 wijne [Maroni] River, in Suriname and French Guiana. 



34. Marlierea salticola Amshoff. Bull. Torrey Club 75: 529. 1948. 



For description see Amshoff, I.e. Potaro River gorge, British Guiana. The 

 bud of this species opens by the abscission of a broad calyptra comprising the 

 distal third of the bud, exactly as in the genus Cahiptrauthes. Apparently Miss 

 Amshoff assigned the species to Marlierea because of the flaring, recurved, and 

 ultimately fraying margin of the hypanthium ; the irregular ''lobes" resulting 

 from this, however, are not a part of the calyx as they are in species having the 

 bud opening by splits downward from the apex. Study of the flowers of this 

 plant makes evident the weakness of the distinction between Marlierea and 

 Calyptranthes ; if the genera are to be separated (as in the past) on the basis of 

 calyptrate or non-calyptrate buds, then this species is a Calyptranthes ; if, on 

 the other hand, primary emphasis is to be placed upon the splitting of the 

 hypanthium tube below the calyx proper, then this species is properly referred 

 to Marlierea. 



35. Marlierea schomburgkiana Berg, Linnaea 29: 209. 1858. 



For description see Berg, I.e., or Amshoff, Fl. Surin. 3: 65 (1951). Suriname 

 and British Guiana, mostly at low elevations, the type presumably from British 

 Guiana. 



36. Marlierea spruceana Berg in Mart. Fl. Bras. 14 1 : 34. 1857. 



If. spruceana a latifolia Berg, I.e. 515. 1859. 

 M. spruceana /3 angustifolia Berg, I.e. 

 M. uaupensis Berg, I.e. 516. 



For description see Berg, I.e. Amazonian Peru and Brazil to eastern Colom- 

 bia and southern Venezuela. Most of the known localities are from within the 

 limits of the Guayana crystalline shield. 



BRAZIL: along the Bio Negro between Barra and Barcellos, Spruce 1505, type, and type 

 of a latifolia. ..COLOMBIA: Panure, Rio Vaupes, Spruce 2857, type of p angustifolia. 

 Panure, Spruce 2839, type of M. uaupensis. VENEZUELA: Amazonas: Capihuara, alto Rio 

 Oasiquiare, elevation 118 m, Williams 15786 (F). Cerro Yapacana, between Cano Yapacana 

 ;in<l base of mountain, elevation 150 m, Maguire et al. 80762 (MICH), 



37. Marlierea suborbicularis McVaugh, sp. nov. 



Frutex usque ad 2 m altus, subglaber, paniculis glabris; ramulis exalatis; 

 foliis subsessilibus, 2-5 cm longis, orbicularis A r el late ovatis, basi late cordatis; 

 paniculis circiter 50-floris, pedunculis 3-floris brevibus (plerumque 4-7 mm 

 longis ) et crassis (1-1.3 mm erassis) ; alabastris 3-3.5 mm longis, obovoideo- 

 rotundatis, clansis, calyptratis; hypanthio ut videtur carnoso, in sicco rugoso. 

 coriaceo, ei margine (Calyptra delapsa) inaequaliter 5-8-lobulato, nee tenni nee 

 revoluto; orbe staminali hirsutulo ; stylo 4-5 mm longo. 



