414 REPORT OF NEW JERSEY STATE MUSEUM. 



Family MORACE.^. iMulberries. 

 Key to the Species. 



a. Staminate and pistillate flowers in spikes. 



h. Leaves rough above, pubescent beneath, fruit purple. 



Morus rubra, p. 414 



bh. Leaves glabrous, fruit whitet. [M, alba]* 



aa. Pistillate flowers capitate. [Broussonetia papyrifera]^ 



MORUS L. 



Morus rubra L. Red Mulberry. 



Mortis rubra Linnaeus, Sp. PI. 986. 1753 [Virginia]. — Knieskern 27. — Britton 

 217. 



Frequent in woods of the Northern district, occurring less 

 abundantly within our limits and confined to the upper part of 

 the Middle district and the coast strip south to Cape May 

 County. 



Fl. — Mid-May to- late May, when the leaves are partly ex- 

 panded. Fr. — Late June to early July. 



Middle District.— Keyport (C), Pemberton (C), Medford (S), Mickleton, 

 below Millville. 



Coast Strip. — Piermont (S), Court House (S). 



The record at Winslow, in Britton's catalogue, refers to an introduced tree. 



Family URTICACE.E. Nettles. 

 Key to the Species. 



a. Herbs with stinging hairs. 



b. Leaves alternate. Urticastntm, p. 415 



bb. Leaves opposite. 



c. Length of petiole exceeding half the breadth of the leaf. 



U. gracilis, p. 415 

 cc. Length of petiole less than half the breadth of the leaf. 



[U. dioica]t 

 aa. Herbs witout stinging hairs. 



b. Flowers in axillary clusters, surrounded b}' leafy bracts. 



Parietaria, p. 416 

 bb. Flowers in naked axillary clusters, plant shining, and pellucid. 



Adicea, p. 415 

 bbb. Flowers in dense slender axillary or terminal spikes, plant not pel- 

 lucid. Boehmeria, p. 415 



* White Mulberry, an escape about houses. 



t Paper Mulberry, an escape. 



t Stinging Nettle, a weed in waste ground, etc. 



