DIOECIA PEXTAXDRIA 563 



V. purpureum (var.). Marsh. Arbuehp. 103. Not ! of IVilld. & Perst 

 \\ album. MuhL Catal. p. 9i. Not of WilUL Pert. Ait. and I)( . 

 V. verticillatum. J\~ult. Gen. 2. p. 235. Ell. Sh. 2. p. 677. Florul. 

 Ccitr. p. 109. Torr. Comp. p. 372. Eat. Man. p. 395. Not? of 

 mild, and Per*. 

 Yellow Viscum. Vulgo— Misseltoc. 



Plant perennial, yellowish green, smooth. Root none ouscrvaUe. Stem 9 u 

 16 inches high (inserted on the branches of trees,— generally producing a tumor \t\ 

 the sustaining branch), terete, much branched, the branches opposite and dtcu>- 

 MlHi clothed with a cellular bark which appears to be horizontally incised, or 

 fulcAtc (8J if articulated), at the ramifications. Leaves 3 fourths of an inch to an 

 inch and half long, and 1 third to 3 fourths of an inch wide, more or less ubovale, 

 •fi«n nearly elliptic, and sometimes a little cuneate, obtuse, very entire, 8-nerred 

 beneath, smooth, fleshy or subcoriaceous, narrowed at base to a thickish tcrctv 

 petiole 1 or 2 lines in length. Flowers small, yellowish-green, sessile, terticiUate, 

 or clustered on short axillary spikes,— the stamina te flowers mostly 3-partcd. 

 Berries subglobose, of a pearly white (resembling white wax) when mature,— the 

 pulp gummy, or viscid. 



tfab. Branches of tree* (mostly on Xyssamtdtijlora): rare. Fl. [May. Pursh.2 />• 

 Obs. This plant has become nearly extinct in Chester County ; but I understand 

 t few specimens yet occur in the South western part of the County. It is out 

 uncommon in New Jersey, and Maryland; and is generally restricted to the 

 Sour Gum (Nyssa mull (flora), —though Mr, Joshua Hoopes informs me he has seen 

 it, in New Jersey, crowing on the Red Maple {Acer rubrurn). It is the only spec le* 

 known in the 0. States. 



[Ilexopaca. Tetrandria Tetragynia.] 

 [Moras. Uriicadioica. Bochmcria cylindrica. AQmotcia Tetrandria*'] 

 Jjf The staminate plants of JSronssonetiapapyrifera, Vahl % or Paper Mulbcrn, 

 Jave been introduced here as shade trees, and arc almost naturalized, by the 

 ixtension of the roots,— which send up numerous suckers, and are often very 

 troeWtiome in yards and gardens. 



Order 5. FeiBtaiidria. 



449. HUMULUS. L. Mat. Gen. 792. 

 [Latin, Humus, moist earth ; in allusion to its place of growth.] 



Stamixati: Fr.. Perianth single, 5-leaved, or deeply 5-parted. Aft- 

 tkers opening by 2 pores at summit. Pi STILL ATS Fi.. in ovoid-oblong 

 cones, or amenta ; scales large, membranous, entire, imbricated. I -flow- 

 ered, persistent. Perianth ? (or membranous, and closeJv embracing 

 the ovary). Styles 2, subulate. Seed (ax Nut) I, invested with a 

 membranous coat. 



Herbaceous: stem twining with the sun ; leaves mostly opposite, 3»Jobe4, ftlpu- 

 Ur; flowers axillary,— the staminate ones loosely paniculate, the pistillate ones 

 in ovoid-oblong imbricated pedunculate jipikea, or amenta. Nat. Ord.:8. LbM. 



r&TXCJi£. ^^ 



I. H. Lupumts, L. Leaves cordate, mostly 2-hbcd. scabrous, f*cti- 

 *late. Beck, Bot. p. 315. 



Ynlgd— Hop. Hop-vinr. 



