36 THE GENUS PHOEADENDEON 



Specimens examined: UNITED STATES. TEXAS. Millett (Trelease, 

 1897, the type). Waco (Heller, 1376). Bluffdale (Ward, Oct. 12, 

 1891, on Quercus). Bexar Co. (Jermy, 1904). Kaufman Co. (Tyler, 

 1904) . Big Spring (Rose, Standley & Russell, 12211 ) . Without locality 

 (Menzel). Austin (Long, 12041, on Celtis). 



Phoradendron Greggii n. sp. 



Phoradendron flavescens tomentosum Engelmann in Watson, Bot. Calif, 

 vol. 2. p. 105. 1880. 



Not forked, the rather short and slender branches without cataphyls, 

 dioecious. Internodes rather short (2x20-30 mm.), densely velvety to- 

 mentose, like the foliage. Leaves oblanceolate-elliptical or broader, very 

 obtuse, 1-1.5x2.5-3 or even 2x4.5 cm., cuneately subpetioled for 2-4 mm. 

 Spikes often clustered, long (30-60 mm.), tomentose, with 4 or 5 joints 

 somewhat clavately about 8-flowered when pistillate and oblong and 30- 

 or 40-flowered when staminate: peduncle 2-5 mm. long: scales velvety - 

 tomentose. Fruit white, subglobose, glabrous, about 5 mm. in diameter, 

 in rather distinct whorls : sepals more or less puberulent, closely inflexed. 

 Plate 22. 



Chihuahuan region ( ? exclusively) on Acacia and Prosopis. The 

 type from northern Mexico. 



Specimens examined : MEXICO. Rinconada, between Monterrey and 

 Saltillo (Gregg, 31, pistillate, ,254, staminate, 1847, the types). Topo 

 Chico, Monterrey (Herb. Field Mus.). Jimulco (Pringle, 845). With- 

 out data (? Pringle, 1883). Pena, Coahuila (Purpus, 1106). 



Phoradendron thyrsoideum n. sp. 



Not forked, the moderate branches without cataphyls, dioecious. In- 

 ternodes rather short (2-3x10-20 mm.), rather persistently stellate- vel- 

 vety like the foliage. Leaves oblanceolate-spatulate, very obtuse, about 

 1x3-5 cm., cuneately subpetioled for about 5 mm. Spikes mostly solitary, 

 short (scarcely 10 mm., lengthening to 20 mm. in fruit), tomentose, with 

 3 or 4 nearly globose joints about 8-flowered when pistillate, clavately 

 lengthening in the somewhat thyrsoidally clustered fruiting spikes : ped- 

 uncle about 3 mm. long: scales staring-puberulous. Fruit white, sub- 

 globose, glabrous, about 4 mm. in diameter, in rather close whorls : sepals 

 glabrescent, closely inflexed. Plate 23. 



Eastern Sierra Madre region. The type from eastern Mexico. 



Specimens examined: MEXICO. Victoria (Palmer, 103, 1907, the 

 type) . Gomez Farias (Palmer, 291). San Luis Potosi (Parry & Palmer, 



