OLACACEAE. 121 



feet. Calyx present, but often a mere border. Corolla present or wanting. 

 Androecium of as many stamens as there are sepals, or petals, or twice as 

 many Gynoecium of several united carpels. Ovary more or less inferior. 

 Fruit a drupe, a nut, or a berry. 



Leaves opposite : fruit a berry : tree-parasite. Fam. 1. LOBANTHACEAE. 



Leaves alternate : fruit a drupe or a nut : root-pans site. Fam. 2. SANTALACEAB. 



FAMILY 1. LORANTHACEAE. MISTLETOE FAMILY. 



Green parasitic herbs or shrubs, growing mostly on woody plants. 

 Leaves typically opposite, sometimes scale-like. Flowers monoecious or 

 dioecious, regular. Calyx of minute sepals, or obsolete. Corolla of 2-6 

 more or less united petals. Androecium of 2-6 stamens. Gynoecium com- 

 pound, often 2-carpellary, but the inferior ovary 1-celled. Fruit baccate. 



1. PHORADENDRON Nutt. 1 Soft-wooded half-shrubs parasitic on woody 

 flowering plants, our species without cataphyllary scales on the internodes, 

 minutely pubescent when young. Leaves olive-green. Flowers dioecious, in 

 axillary jointed spikes, about 6-ranked, minute, epigynous, apetalous. Sepals 

 3. Stamens opposite the sepals and partly adnate to them: anthers minute, 

 nearly sessile, 2-celled, dehiscing longitudinally. Ovary 1-celled. Ovule soli- 

 tary, erect. Fruit a white berry with viscid pulp investing the green seed. 

 The plants flower in fall or early winter and mature their fruit a year later. 

 MISTLETOE. 



Spikes permanently short (2-3 cm.), covered by the berries. 



Leaf-blades relatively broad, oblanceolate-obovate. 1. P. flavescens. 



Leaf-blades relatively narrow, subspatulate. 2. P. Eatoni. 



Spikes becoming elongate (6-7 cm.), with the berries in sepa- 

 rated whorls. 3. P. macrotomum. 



1. P. flavescens Nutt. Stoutish, somewhat yellowish-pubescent: leaves 2-5 cm. 

 long; blades usually 1.5-2 cm. wide or occasionally 4 cm. wide, oblanceolate- 

 obovate: spikes under 2 cm. long, with about 4 short joints 6-12-flowered, 

 lengthening one-half in fruit, but with the berries nearly meeting. 



On oaks, hickories, and other deciduous-leaved trees, n. Fla. (Cont.) 



2. P. Eatoni Trelease. Slenderer than P. flavescens, minutely velvety: leaves 

 2-5 cm. long; blades scarcely 1 cm. wide, subspatulate: spikes under 2 cm. 

 long, with 2 or 3 short joints 6-12-flowered or even 30-flowered. 



On ash trees, s. w. pen. Fla. (Endemic.) 



3. P. macrotomum Trelease. Slightly pubescent: leaves 5-7 cm. long; blades 

 1.5-2 cm. wide, oblanceolate : spikes 2-3 cm. long, with 4 or 5 oblong joints 

 6-12-flowered or even 30-flowered, lengthening to 5-7 cm. in fruit, with the 

 whorls of berries distinctly separated. 



On oaks and other deciduous-leaved trees, e. Fla. and the upper pen. (Endemic.) 



FAMILY 2. OLACACEAE. XIMENIA FAMILY. 



Shrubs, trees, or vines. Leaves usually alternate: blades entire or 

 rarely toothed. Flowers perfect or polygamous, regular, in dichotoinous 

 or raceme-like cymes. Calyx of 4-6 small sepals, surmounting the hypan- 

 thium. Corolla of 4-6 distinct or united petals. Androecium of 4-12 

 stamens. Gynoecium 3^1-carpellary. Fruit a drupe. 



1 Contributed by Professor William Trelease. 



