206 FLORA OF PHILADELPHIA. 



Capsule 2-5-celled, not splitting into its carpels. 



Stamens 2-3 times as many as the petals ; leaves 3- 



foliolate. Fam. 2. Oxalidaceae. 



Stamens as many as the petals; leaves entire. 

 Fam. 3. Linaceae. 

 Leaves pinnately compound. Fam. 4. Zygophyllaceae. 



Trees or shrubs with compound leaves, often punctate ; flovi^ers 

 dioecious or polygamous. 

 Leaves punctate. Fam. 5. Eutaceae. 



Leaves not punctate, the bitter bark with oil-sacks. 



Fam. 6. Simarubaceae. 

 Flowers very irregular ; petals 3 ; stamens usually 8 ; herbs. 



Fam. 7. Polygalaceae. 

 Flowers regular, often apetalous, small, monoecious ; carpels mostly 3 ; 

 herbs or low shrubs; mostly with milky juice. 



Fam. 8. Euphorbiaceae. 

 Stamen only 1 ; perianth none ; styles 2 ; small aquatic or rarely terrestrial 

 plants with opposite, entire leaves. Fam. 9. Callitrichaeeae. 



Family 1. GERANIACEAE J. St. Hil. Geranium Family. 



Anthers 10, rarely 5 ; carpel-tails not hairy inside. 1. Geranium. 



Anthers 5 ; carpel-tails bearded inside. 2. Erodium. 



1. GEEANIUM L. Crane's-bill. 



Perennial; flowers 2.5 cm. broad or more. 1. G. maculatum. 



Annuals or biennials; flowers 4-12 mm. broad. 



Leaves 3-divided; segments pinnatifid, thin. 2. G. Robertianum. 



Leaves pedately lobed or dissected. 



Peduncles longer than the leaves ; carpels smooth. 



3. G. coluinbinuvi. 

 Peduncles short ; carpels rugose or hairy. 



Seeds reticulated or pitted. 



Glandular-pubescent with long, white hairs. 



4. G. rotundifolium. 

 Pubescent with short hairs ; leaves deeply lobed. 



Flowers pale purple ; seeds minutely reticulated. 



5. G. CaroUnianum. 

 Flowers deep purple ; seeds pitted. 



6. G. dissectum. 

 Seeds smooth or nearly so. 



Stamens 5 ; carpels hairy, not rugose. 7. G. pusillum. 

 Stamens 10; carpels glabrate, rugose. 



8. G. molle. 



1. Geranium maculatum L. M. p. 573. Open woods. Summer. 



2. Geranium Robertianum L. Herb-Robert. M. p. 573. Rocky woods and 



sandy places. Summer. 



Philadelphia— 'Fa.irm.owni Park (Ha.), Robinson's Knoll (Te.). Bucks 

 — Narrowsville, Argus (Cr.), Rock Hill (Fr.), Point Pleasant (Ws.). 

 jBerfes— Monocacy (Me.). Northampton— ^a.ston (Ca.). 



C«mbertoHd— Vineland (Ab.). Atlantic— NevAnor (Gi.), Atlantic City, 

 7. Burh (He.). Cape May— Peermont (Br.), Anglesea (U. C. S.), Wild- 

 wood (Wn.). Mo»?noM*fe— Sandy Hook (C). Hwiterdon— Prallsville, 

 Sergeantsville (C). 



3. Geranium columbinum L. M. p. 574. Fields and along roadsides. 



Summer. 

 Bwcfcs— Red Hill, If ot/er (P.). Delaware— Goncor A (W. Tr.). Chester 



