URTICACEAE 39 



1. C. equisetif olia Forst. A tree often 10 m. tall, with many slender branches : 

 leaves (scales) 1-3 mm. long, 6-8 in each whorl: staminate spikes 1-4 cm. 

 long: pistillate spikes globular, becoming 1-2 cm. in diameter in fruit: seed- 

 wing nearly thrice as long as the body. Cultivated grounds and waste places. 

 U. keys, L. keys. Xat. of Oceanica. [E. K.] (Bah., Cuba, Ant.) BEEF- 

 WOOD. AUSTRALIAX-PINE. 



Order MYEICALES. 



Shrubs or small trees, usually aromatic. Leaves alternate: blades 

 simple, sometimes toothed or pinnatifid. Mowers dioecious or monoecious, 

 the staminate in long aments, each flower consisting of an androecium of 

 2-8 stamens, the pistillate in short aments, each flower consisting of a 

 gynoecium of 2 united carpels on a bract subtended by 2 bractlets and 

 surrounded by 2-8 scales. Stigmas 2. Ovule solitary. Fruit a nut, the 

 epicarp often waxy. 



FAMILY 1. MYRICACEAE. BAYBERRY FAMILY. 



Leaves resinous-dotted. Staminate and pistillate flowers in scaly 

 aments. Perianth wanting. Ovary 1-celled. 



1. CEEOTHAMNUS Tidestrom. Dioecious shrubs. Leaf-blades entire 

 or merely toothed. Pistillate aments not bristly. Fruit globose, drupe-like 

 with a fleshy waxy epicarp. 



1. C. ceriferus (L.) Small. Shrub, or tree becoming 12 m. tall: leaf -blades 

 oblanceolate to oblong-oblanceolate, 3-10 cm. long, entire or sharply toothed: 

 staminate aments 1-1.5 cm. long: nuts 2-3 mm. in diameter. [Myrica cerifera 

 L.] Hammocks and pinelands, U. S. keys, L. keys. [E. K.] (Ber., Bah., 

 Cuba, Ant.) BAYBERRY. WAX-MYRTLE. MYRTLE. 



Order URTICALES. 



Shrubs or trees, or herbs. Leaves alternate, or in the case of herbs 

 often opposite : blades simple, entire, toothed, or divided. Flowers various, 

 not in aments. Calyx present. Corolla wanting. Androecium often of 

 as many stamens as there are sepals. Gynoecium of a single carpel or of 

 2 united carpels. Fruit an achene, a samara, drupe, syncarp, or syconium. 



Fruit an achene, the achenes sometimes in the accrescent sepals and disposed in a 



syncarp. 

 Flowers not on a receptacle : fruits not forming syncarps : sepals neither thick 



and juicy, nor enveloping the achenes. Fam. 1. URTICACEAE. 



Flowers on the outside or inside of a receptacle : fruits 

 forming syncarps : sepals accrescent, enveloping the 



achenes. Fam. 2. ABTOCARPACEAE. 



Fruit a samara or a drupe, sometimes nut-like. Fam. 3. ULMACEAE. 



FAMILY 1. URTICACEAE. NETTLE FAMILY. 



Herbs or shrubby plants (ours), often with stinging hairs. Leaf- 

 blades entire, toothed, or rarely lobed. Flowers dioecious, monoecious, or 

 polygamous, cymose. Calyx of 2-5 distinct or partially united sepals. 

 Androecium of 2-5 stamens. Gynoecium a single carpel. Fruit an achene. 



Flower-clusters not involucrate : leaves mostly opposite. 1. PILEA. 



Flower-clusters involucrate : leaves mostly alternate. 2. PARIETARIA. 



