72 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN 



[VOL. 10 



early deciduous ; buds 2 mm long, obovoid, apiculate, calyptrate, the calyptra 

 domelike, 1.5 mm across; hypanthium in anthesis campanulate, glabrous within, 

 prolonged at least 1 mm beyond the summit of the ovary, 1.5 mm long and 1.5 

 mm wide at the mouth ; style 4.5-5 mm long; flowers white (Schultes & Cabrera) ; 

 stamens 40-50, 4 mm long, the anthers 0.2-0.3 mm long ; petals none ; fruit not 

 seen; ovary bilocular with 2 ascending ovules in each locule. 



COLOMBIA: Amazonas-Vaupes : Rio Apaporis, Soratama, elevation ca. 250 m, Aug 16, 

 1951, Schultes $ Cabrera 13578 (MICH, type; US), Aug 27, 1951, Schultes $ Cabrera 13791 

 (MICH). 



4. Calyptranthes fasciculata Berg, Linnaea 27: 31. 1855. 

 C. sericea Griseb. Fl. Brit. W. Ind. 233. 1860. 



For description see Berg, I.e., or Flora of Suriname 3: 60 (1951). A recent 

 collection from south of the Amazon is a notable extension of range. Lesser 

 Antilles, Guianas, Brazil. 



VENEZUELA: Bolivar: Gran Sabana, s of Mt. Roraima, elevation 1065 m, Steyermark 

 59246 (F). BRAZIL: Para: Ourem, Rio Guama, J. M. Fires $ N. T. Silva 4632 (MJCB I. 



5. Calyptranthes florifera McVaugh sp. now 



Arbor mediocris, ramulis exalatis, paniculis sparse pubescent ibus, alabastris 

 glabris; foliis ehartaceis ellipticis, 2.5-5.5 (-13) cm longis, cireiter duplo longi- 

 oribus quam latioribus, acutis vel breviacuminatis, basi acutis; nervo medio 

 supra convexo vel planiuseulo ; petiolis 3 mm longis ; paniculis 2-4 (-10) cm 

 longis multifloris, ramulis tenuibus, pedunculis 3-floris 0.5 mm angustioribus ; 

 alabastris siccis pallidis, clausis, 3-3.5 mm longis ealyptratis; hypanthio ad 

 florendi tempus paulum explanato et marginibus tenuissimis, revolutis; orbe 

 staminali glabro. 



Small tree, the branehlets and inflorescence sparingly pubescent with pale or 

 reddish erect or ascending hairs 0.2-0.3 mm long, these on the" vegetative buds 

 thickh' appressed and up to 0.5 mm long, a very few slender dark dibrachiate 

 hairs persisting on the midvein on the lower surface; leaves elliptic, 1.5-2.5 (-6) 

 em wide, 2.5-5.5 (-13) cm long, about 2-2.3 times as long as wide, about equally 

 narrowed to the acute or short-acuminate apex and the acute base, the margins 

 decurrent on the compressed petiole 1 mm wide, 3 mm long; midvein flat or 

 convex above, scarcely more prominent beneath ; lateral veins 10-15 pairs, weakly 

 defined and separated by irregular reticulations, apparent as pale fine lines 

 above, slightly elevated beneath ; marginal veins similar, arched between the 

 laterals, 1-2 mm from the margin ; blades very smooth but dull above, paler but 

 rougher beneath, with pale translucent dots apparent on both surfaces ; inflores- 

 cence axillary and terminal, the paired panicles 2-4 (-10) cm long, reddish, 

 twice compound, often 30- to 60-flowered, the flowers short-pedicelled near the 

 tips of the branches, drying pale yellow-brown; peduncle 1-1.5 (-3.5) cm long, 

 1-1.5 mm wide near the summit ; buds closed, obovoid, 3-3.5 mm long including 

 the short apiculum and the short pseudostalk ; hypanthium in anthesis infundi- 

 buliform, prolonged 1.5 mm beyond the summit of the ovary, the thin margin 

 soon revolute and the whole explanate, the disk 2.5 mm wide ;. calyptra dome- 

 like, about 2 mm wide; style 3.5-4.5 mm long; stamens about 100, to 5 mm long, 

 the anthers 0.2 mm long; petals 4, irregularly obovate or spatulate, cuneate, 

 erose, about 1 mm wide, 2 mm long, one or more often adhering to the calyptra ; 

 ovary bilocular, with 2 ascending ovules in each locule. 



VENEZUELA : Bolivar, Rio Pargueni, along river 1-10 km above mouth, elevation 90 



