io MORACEAE— GERANIACEAE 



Gossypium — Cotton 



(Name from the Arabic) 

 Leaves 5-lobed ; flowers yellow, purple inside at base G. herbdceum 



Moraceae — Mulberry Family 

 Herbs with opposite or alternate lobed leaves ; sepals 5, more or less united, petals 0, stamens 5 

 ovary 1-celled, stigmas 2, fruit an achene ; flower syncarpous, synsepalous, apetalous, dioecious, hy- 

 pogynous, regular. 



1. Tall erect herb, leaves divided to the base into 5-11 lance-linear divisions Cannabis 



2. Twining herb with 3-7 lobed leaves; fruit cone-like Ilumulus 



Cannabis — Hemp 



(Lat. cannabis, hemp) 

 Plant 1-4 m. high; flowers green, in axillary spikes C. saiiva 



Humulus— Hop 



(Lat. humus, ground, -ulus, little, perhaps from its clambering habit) 

 Leaves rough, ovate in outline; fruit clusters 3-8 cm. long H. hipulus 



Urticaceae — Nettle Family 

 Herbs with opposite or alternate leaves, sometimes with stinging hairs; sepals 3-5, sometimes 

 united, petals 0, stamens 3-4, ovary 1-celled, stigma 1, fruit an achene; flower syncarpous, apetalous, 

 polygamous, monoecious or dioecious, hypogynous, regular. 



1. Leaves opposite 



a. Armed with stinging hairs Urtica 



b. Smooth and without stinging hairs Pilea 



2. Leaves alternate, without stinging hairs Parietaria 



Urtica— Nettle 



(Lat. urtica, nettle, from uro, to burn, from the stinging hairs) 



1. Leaves hairy, heartshaped at base JJ . dideca 



2. Leaves smooth or nearly so, round at base U. gracilis 



Pilea — Richweed. Clearweed 



(Lat. pileus, cap, from the cap-like sepal of one species) 

 Stems clear, 1-4 dm. high; leaves ovate, 3-ribbed P. pumila 



Parietaria — Pellitorv 



(Lat. parietaria, on walls, from paries, wall) 

 Low annual herb; leaves lance-oblong P. pennsilvdnica 



Geraniales Geranium Order 



Geraniaceae — Geranium Family 



Herbs, or some shrubby, with simple lobed or compound leaves ; sepals 5, petals 5, stamens 5 or 

 10, ovary 5-celled, stigmas 5, fruit separating at maturity into 5 achene-like parts ; flower syncarpous, 

 apopetalous, hypogynous, regular. 



1. Leaves entire to palmately divided 



a. Flowers regular: stamens with anthers 10 Geranium 



b. Flowers somewhat irregular ; stamens with anthers 7-8 Pelargonium 



2. Leaves pinnate ; stamens with anthers 5 Erodium 



Geranium — Cranesbill 



(Gr. geranos, crane, referring to the form of the fruit) 



1. Flowers red : 



a. Flowers 1 cm. wide; leaves 3-parted G .robertidnum: herb 



Robert 



b. Flowers 2-4 cm. wide ; leaves 7-parted G. sanguincum 



2. Flowers blue or violet G. ibcricum 



3. Flowers white or pink G. Richardsonii 



