226 CONTRIBUTIONS FROM THE NATIONAL. HERBARIUM. 



Spikes canesceut-tomentose. 



Staminate spikes 4 to G cm. loug 55. P. greggii, 



Staminute spikes 2 cm. long or shorter. 

 Staminate spikes (in flower) 1.5 to 2 cm. long. 



56. P. engelm.anni. 

 Staminate spikes 1 cm. long 57.P. thyrsoideum. 



1. Phoradendron piptroides (H. B. K.) Trel. Gen. Phorad. 145. 1916. 

 Viscum latifoUum Swartz, Fl. Ind. Occ. 1:268. 1707. Not F. /afifoZtMm. Lam. 



1789. 



Loranthm pipe^oides H. B. K. Nov. Gen. & Sp. 3 : 443. 1818. 



Viscum comifoUuyn Presl, Epim. Bot. 254. 1849. 



Viscum ellipti<;um Presl, Epim. Bot. 2.54. 1S49. 



Viscum laurifoUum Presl, Epim. Bot. 255. 1849. 



Veracruz. Central America, West Indies, and South America ; type from 

 PopayS,n, Colombia. On various dicotyledonous hosts. 



Leaves lanceolate to broadly ovate, 6 to 10 cm. long, acute or acuminate; fruit 

 yellow or orange. 



2. Phoradendron oliverianum Trel. Gen. Phorad. 136. pi. 201. 1916. 

 Veracruz ; type from Mirador. 



Leaves oval or elliptic, 4.5 to 6 cm. long, obtuse or rounded at the apex; 

 spikes 2 to 3.5 cm. long. 



3. Phoradendron townsendi Trel. Gen. Phorad. 112. pi. 162. 1916. 

 Known only from Socorro Island. 



Leaves oblanceolate-oblong, 4 to 6 cm. long, very obtuse ; spikes 1 cm. long. 



4. Phoradendron yucatanum Trel. Gen. Phorad. 118. pi. 173. 1916. 

 Yucatfl^n. 



Leaves cuneately obovate or suborbicular, 1.5 to 2.5 cm. long, rounded or 

 emarginate at tiie apex ; spikes 5 to 10 mm. long. 



5. Phoradendron wawrae Trel. Gen. Phorad. 94. pi. 12S. 1916. 

 Veracruz ; type from Tuxpan. 



Leaves lanceolate or oblanceolate, 5 to 10 cm. long, very obtuse; spikes 1 to 

 1.5 cm. long. 



6. Phoradendron vernicosum Greenm. Field Mus. Bot. 2: 2.50, 1897. 

 Yucatan, the typo from Izamal ; parasitic on Bumelia bu.vifoHa and perhaps 



on other plants. 



Leaves elliptic, obovate, or lanceolate, 2.5 to 4 cm. long, very obtuse ; spikes 

 1 to 2 cm. long. 



7. Phoradendron amplifolium Trel. Gen. Phorad. 59. pi. 68. 1916. 

 Veracruz, Puebla, and Oaxaca ; type collected between Piaxtla and Amolac, 



Puebla. 



Leaves oblanceolate-oblong to obovate-elliptic, very obtuse, 8 to 12 cm. long; 

 spikes 3 cm. long; fruit reddish, 6 to 7 mm. in diameter. 



8. Phoradendron carneum Urban, Bot. .Tahrb. Engler 23 : Beibl. 5 : 1. 1897. 

 Jalisco to Queretaro and Oaxaca ; type from Guadalajara ; on Ipomoea and 



Populus. 



Leaves linear-lnneeolate, obtuse or acute, 5 to 15 cm. long; spikes 2 to 3 cm. 

 long; fruit reddish orange, 4 to 5 mm. in diameter. 



9. Phoradendron tamaulipense Trel. Gen. Phorad. 115. pi. 161. 1916. 

 Tamaulipas, Veracruz, and Oaxaca ; type from Alvarado. Veracruz ; on Sa/wr, 



Populus, Mimosa, and Pnrmenticra. 



