BOREALES FLAVESCENTES 35 



oblong joints 6- to 12- or even 30-flowered when staminate : peduncle 1-2 

 mm. long: scales minutely velvety. Pistillate flowers and fruit?. 

 Plate 28. 



South Atlantic region ( ? exclusively) on Fraxinus. The type from 

 Florida. 



Specimens examined: UNITED STATES. FLORIDA. Deep Lake, Lee 

 Co. (Alvah A. Eaton, 1310, Mar. 1905, the type). Hancock Creek 

 (Harsliberger, 1912). 



Phoradendron Engelmanni n. nom. 



Phoradendron flavescens pubescens Engelmann, Boston Journ. Nat. Hist. 



vol. 6. p. 212. 1850. 

 P. flavescens Stevens & Hall, Diseases of Econ. PI. f. 187. 



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

 ternodes rather short (2-5x20-40 mm.), subcanescently tomentose like 

 the foliage. Leaves obovate to oblanceolate, very obtuse, 1.5-2.5x3-5 cm., 

 cuneately subpetioled for about 5 mm. Spikes mostly solitary, moderate 

 (15-20 mm., lengthening to 30-40 mm. in fruit), canescent, with some 

 4 or 5 joints rather clavately 6- to 12-flowered when pistillate or oblong 

 and 20- to 30-flowered when staminate: peduncle 2-3 mm. long: scales 

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

 in rather close whorls : sepals nearly or quite glabrous, closely inflexed. 

 Plates 5, 29, 30, 31. 



East Texan region, on Celtis, Madura, Quercus, Ulmus and, very con- 

 spicuously, Prosopis* The type from Texas. 



Specimens examined: UNITED STATES. TEXAS. Vicinity of New 

 Braunfels (Lindheimer, 406, 1846 the type; 115, 1120, 227, 1121, 1849; 

 445, 1122, 1850). Comancheries (Berlandier, 678, 2088, 1828). Bexar 

 Co. (Jermy, 1904). San Antonio (Ferriss). Gillespie Co. (Jermy). 

 Nolan Co. (Broadhead, 1887). Lampasas Co. (Joor). Melissa (Pammel, 

 1888). Dallas Co. (Reversion, 837}. Austin (Heald, 1909, 1911; Long, 

 15103; Hedgcock, 422, 427). Mitchell Co. (Holstein). West Texas 

 (Soulard, 1882). Davis Mts. (Tracy & Earle, 188). Fayette Co. (Mat- 

 tlies,573). MEXICO. CHIHUAHUA. Ciudad Juarez (Stearns, 1911). 



Phoradendron Engelmanni Claviger n. var. 



Differing from the type in its more elongated fruiting spikes (40-50 

 mm.) with distinctly separated whorls of fruit. Plates 5, 21. 



With the type, into which it probably merges, chiefly on Prosopis. 

 The type from Texas. 



*A list and analysis of host plants in Texas is given by Bray, Bull. Bur. PI. Ind., 

 U. S. Dep. Agr. No. 166. p. 22. 



