206 FLORA OF PHILADELPHIA. 



Capsule 2r5-<selled, not splitting into its carpels. 



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

 foliolate. Fam. 2. Oxalidaeeae. 



■ '"■■■'• 'Stamens as many as the petals; leaves entire. 



Fam. 3. , Unaceae... • 

 Leaves pinnately compound. Fam. 4. Zygophyllaceae. 



Trees or shrubs with compound leaves, often punctate; flowers 

 dioecious or polygamous. 

 !, Leaves punctate. Fam. 5. Butaceae. , 



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. Callitrichaceae. 



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 1 biennials ; flowers 4-12 mm. broad. 



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



Leaves pedately lobed or dissected. 



Peduncles longer than the leaves ; carpels, smooth. 



3. G. eoiumbinum. 

 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, Carolinianum. 

 Flowers deep purple; seeds pitted. 



6. G. dissectum. 

 Seeds smooth or nearly so. 



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

 Stamens 10 j carpels glabrate, rugose. 



8. G. molle. 



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



2. Geranium Eobertianum L. Herb-Robert. M. p. 573. Bocky woods and 



sandy places. Summer. 



Philadelphia— Fairmount Park (Ha.), Robinson's Knoll (Te.). Bucks 

 — Narrowsville, Argus (Cr.), Bock Hill (Fr.), Point Pleasant (Wb.). 

 Berks— Monocacy (Me.). Northampton— Easton (Ca.). 



Cumberland— Vineland (Ab.),. ' Atlantic— Ventnor (Gi.), Atlantic City, 

 I. Burk (He.). Cape May— Peermont (Br.), Anglesea (U. C. 8.), Wild- 

 wood (Wn.), Monmouth— Sandy Hook (C). Hunterdon— Prallsville, 

 Sergeantsville (C). 



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

 • , ,• Summer. 



Bucks— Bed Hill, Mayer (P.). Delaware— Concord (W. Tr.). Chester 



