AEQUATORIALES PTERONEURAE 137 



Spikes rather slender : cataphyls a single pair. P. productipes. 

 Spikes clavate. 



Cataphyls a single pair. 



Internodes flattened. P. bolivianum. 



Internodes not dilated. P. cerinocarpum. 



Cataphyls 1-2 pairs : internodes 2-winged. P. carinatum. 

 Cataphyls several pairs : internodes not compressed. 



Cataphyls 2 pairs : shoots quadrangular. P. Brittonianum. 



Cataphyls 3 pairs : shoots 2-keeled. P. pteroneuron. 



PHORADENDRON RACEMOSUM Northrop. 



Phoradendron racemosum Northrop, Mem. Torr. Bot. Cl. vol. 12. p. 33. 



1902. 



Viscum racemosum Aublet, Guian. vol. 2. p. 895. 1775. 

 V. latifolium Lamarck, Encycl. vol. 3. p. 57. 1789. 

 V. macrophyllum Sprengel, Syst. vol. 1. p. 488. 1825. de Candolle, Pro- 



dromus, vol. 4. p. 282. 



V. pennivenium de Candolle, Prodromus. vol. 4. p. 282. 1830. 

 V. glandidosum Miquel, Linnaea. vol. 18. p. 60. 1844. 

 Phoradendron hexastichum latifolium Grisebach, Cat. p. 120, 1866. 

 P. pennivenium Eichler in v. Martius, Fl. Brazil, vol. 5. pt. 2. p. 128. 



pi. 42. 1868. 



P. cayennense Eichler, 1. c. p. 129. 134 m. 1868. 

 P. glandulosum Eichler, 1. c. p. 134 m. 1868. 

 Plioradendrum racemosum Krug & Urban, Bot. Jahrb. vol. 24. p. 46. 



1897. 



Usually forked and the long branches therefore mostly with cataphyls 

 on all joints, androgynous. Internodes long (2-5x70-150 mm.), some- 

 times granular, nearly terete, somewhat enlarged below the nodes. Cata- 

 phyls a basal pair, mostly followed by a second or occasionally a third 

 pair at intervals of 5-10 mm., subannular. Leaves from broadly lance- 

 olate to elliptical, ovate or orbicular, very obtuse or somewhat blunt- 

 acuminate, 5-8 or 10x10-16 cm., usually abruptly wing-petioled for 10-20 

 mm. Spikes often clustered, long (30-50 or 70 mm.), with mostly 4 or 5 

 rather long joints thickened except at the ends, some 20-flowered in 4+2 

 series: peduncle some 8 mm. long, with a basal pair of scales. Fruit 

 white, round-ellipsoid, mostly smooth, 3x4 mm. : sepals inflexed or some- 

 what parted. Plates 202, 203. 



Upper West Indies and Northern South America; absent from the 

 intervening Caribbees. The type from Cayenne. 



Specimens examined: BAHAMAS. ANDROS (Northrop, 704). AN- 

 TILLES. CUBA (Wright, 438=1252 in part). HAITI (Picarda, 1605b; 

 Christ, 1960; Nash, 150a). STO. DOMINGO (Eggers, 1741, 2011; Kuntze, 

 415; Prenleloup, 507; Taylor, 28, 415}. PUERTO Rico (Bertero, 1820, 



