POREALES FLAVESCENTES 31 



W. oblongifolium Rafinesque, 1. c. p. 23. 1836. 

 V. rugosum Rafinesque, I. c. p. 24. 1836. 



V. verticillatum Audubon, Birds of Amer. vol. 4. pi. 369 ; quarto ed. vol. 

 3. pi. 143. 



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

 dioecious. Internodes rather short (2-4x15-30 mm.), like the foliage be- 

 coming nearly glabrous from slightly but not canescently tomentose. 

 Leaves oblanceolate to obovate, very obtuse, 1.5-2 or 3 or even 4.5x2-5 cm., 

 rather fleshy, obscurely 3- to 5-nerved or also veiny, cuneately subpetioled 

 for about 5 mm. Spikes mostly solitary, short (10-15 or rarely 20 mm., 

 lengthening to 25-40 mm. in fruit), at first puberulent, with about 4 short 

 joints clavately 6-flowered when pistillate and subglobose and about 12- 

 flowered when staminate: peduncle 2-6 mm. long: scales more or less 

 short-pilose. Fruit white or whitish, globose or somewhat ellipsoidal, 

 glabrous, about 4x5 mm., in approximate whorls: sepals nearly or quite 

 glabrous, closely inflexed. Plates 5, 24, 25. 



Atlantic United States, on a great variety of Angiosperms* (Acer, 

 Gleditsia, Nyssa, Platanus, Quercus, Ulmus, etc.), of which it most com- 

 monly affects only one in a given region, doubtless illustrating the same 

 host-adaptation as the mistletoe of northern Europe, Viscum album, with 

 which it was at first confused. The type to be understood as of Carolina. 



Specimens examined: UNITED STATES. NEW JERSEY. Without lo- 

 cality (Miihlenberg, 639, in Herb. Willdenow as no. 18295, Viscum pur- 

 pureum "Willdenow, not L. ; Cuming, 1823 ; Schweinitz, 1829 ; Korfhals, 

 1843; Eby, 1894). [Monmouth or Ocean Co.?] (Knieskern). Atsion 

 (Tatnall). Middletown (Torrey). PENNSYLVANIA. Cumberland Mts. 

 (Kaflnesque, 1823, V. serotinum). Martio (Eby. 1888). DELAWARE. 

 Eastern short (Canby, 1880). Without locality (Nuttall; Beyrich; Read). 

 Newcastle Co. (Canby, 1862). MARYLAND. Montgomery Co. (Darling- 

 ton). Baltimore (Harper, 1888). Eastern shore (Stevens, 1885). DIS- 

 TRICT OF COLUMBIA. Washington (Ward, 1876). VIRGINIA. Without lo- 

 cality (Buckley; Stocking; Vasey, 1875). Bedford Co. (Curtiss, 1872). 

 Virginia Beach (Britton, 1892). Norfolk Co. (Heller, 750). Hanover 

 Co. (Henry, 1890). Dismal Swamp (Kearney, 2356). Near Washington 

 (Hedgcock, 8269). WEST VIRGINIA. Without data (McCarthy). Hunt- 

 ington (Killingsworth, 1915). NORTH CAROLINA. Without locality (Bald- 

 win, 307, Pursh herb. ; Buysman, 1883 ; McCarthy, 1879). Hot Springs 

 (Ransdell). Swain Co. (Beardslee & Kofoid, 1891). Biltmore (Butm,ore 

 Herb., 4339a). Chapel Hill (Coker, 1911). Great Lake (Brown, 114). 

 SOUTH CAROLINA. Without locality (Bosc; Curtis, 1852). Charleston 

 (Clark, 1857). Abbeville (Diedrick, 118). Santee Canal (Ravenel). 



*A list of hosts is given by Hedgcock in Phytopathology, vol. 5. p. 178. 



