126 FLORA OF PHILADELPHIA. 



■' ■ -4. HUMTILTJS iSif 

 l.f Humulus Lupulus L. Hop. M. p. 341. ■ Alluvial banks. Escaped 

 -'•'■* ' fdom cultivation. Summer. 



5. CANNABIS L. 

 1. Cannabis sativa L. Hemp.- M.'p. 341. Waste places. Summer. 



Family 3. URTICACEAE. Nettle Family. 



Herbs with stinging hairs.. 



Leaves opposite'; both kinds of flowers 4-parted; achene straight. 



. .... v/ » r : ,' , ,r,,'. y.'\ ' ■'! l > ■■•' ,|; L, EWMM. , i 



Leaves alternate; staminate flowers 5-parted; aehene oblique. 



2. Urticastrum. 

 Herbs without stinging hairs. 



Mower-clusters; panicled or spiked,'hdt' involucrate leaves mostly opposite. 

 • , ,, Pistillate calyx 3-parted or of three sepals. . . i 3. AdAcea., \ 

 , Pistiljate calyx 2-4 toothed or entire. 4. Bqehmeria. . 



Flower-dusters involucrate by leafy bracts; leaves alternate. 



,■'. .,">•. .■ '•.■(.' • ■ j 5. Parietaria. ' 



1. URTICA L. Nettle. 



Perennials, 0.6-2.2 m, tall ;, flower clusters large, , compound. 



Leaves ovate, cordate at base. 1. V. dioica. 



Leaves laciniate, rarely cordate. ■'" ■" 2. U. gracilis. 



Annuals 1.5-4 dm. tall, flower clusters small, oblong, rather dense. 



■■i ■:,-,'!. ■, :- 4 .'dJi'?v1 :iA.aC ">?■*'. ■!. "-.'I 3 ' Um UTenS - 



1. Uetioa dioica L. M. p. 342. Waste B places , ^nd .roadsides, Rummer. 



2. UrtiCa (gracilis Ait. -Mi p. 3421 Dry soil. Sumrmepv n >■■ < 



Bucks— NOckamixon (Fr.) (Ja.). Montgomery — Shannonville (Cr.). 



Z>e?aw$r?—Haverford.j| Nitre' HallJT^l'l Dam, Dr^ '(?,«£. Smitji (Fu.),Lans- 



, downe (Pe.), Swarfrhmp.re (Pr.), Wallingfor.d ,(Wn.,) B1 Jja.neaster— Peach 



Bottom (Le.). Northampton u- 'Eastop, Porter (B; Ci). : Dauphin *->■ 



Steeli^on (Wn.); <'■' •■>'■«•■■" ■ • > ; . 



'Buriing^on — Bordentown (Wn.). Gloucester — Swedesboro (Li.). 

 M ercer— Trenton (C). Hunterdon— Booles Island, J. £. Moyer (B. C). 



3. Urtica tjrens L. M. p. 342f'' Waste places. Summer. 



■Philadelphia— Wissahickon , (Je.). Montgomery— Shannonville (Cr.). 

 , "'Camden— Kaighns Point (Ja.). Hunterdon — Below Booles Island(C). 



2. URTICASTRUM ,Fabr. 



1. Urticastrum divaricatum (L.) Kuntze, Wood Nettle. M. p. 343. 

 Rich woods. Summer. 



. 3,; ABICEA Raf . 



1. Amoea pkmila (L.) Raf. Eichweed. M. p. 343. , Copland mp,jst shaded 

 places. Summer.,, -, .,»,,. ,. ,.,, ... , , .. .. ,, 



4, BQEHMERIA, Jacq. 



1;'Boehmeria .lOYLiNDBiCA (L.) W'iHd; False, Nettle.,. M. p. 343. Moist 



ground. Summer. ,i, , , , -M •■ - . ., ,, , ■ 



