GERANIUM FAMILY 365 
base of the leaf stalk. Flowers generally regular the calyx and 
corolla each of 5 divisions. In some foreign species the calyx has 
less than 5 sepals. Stamens 10, united at the base, 5 long and 5 
short, in Geranium all fertile, in Hrodium 5 only fertile. Styles 
5, adherent to a central column, the whole forming a slender beak. 
Ovary free with 5 cells, the cells each with 2 ovules. 
Stamens 10, all bearing anthers . . . . . Geranium 
Stamens 10, 5 only bearing anthers . . . . Erodium 
1. GERANIUM, L. 
All of our species herbs, the stem swollen at the nodes, Leaves opposite 
or alternate usually cut or lobed, our species all with stipules at foot of 
leaf stalk. Flowers regular with 5 petals, 5 sepals, 10 stamens, 5 long 
and 5 short, usually ripening at different times. Ovary 5-celled, terminat- 
ing in a long beak. Fruit when mature of 5 one-seeded carpels. These 
at maturity elastically separate from the central column, a thread-like 
portion of the carpel to which the seed is attached coiling upward. (Tig. 
la, pl. 84.) 
HiGwersmeaerinDLOaAGm OL MNOLes shir cst) fee ie ey wl en Ge ecoulatiine 
Flowers about 4 in. broad. 
Leaves divided to the base into 3 epmpound leaflets, the middle one at 
least with a stem . - G. Robertianum 
Leaves cleft nearly to the base into 3 compound “divisions, the middle one 
not on stem. 
Flower stalks exceeding the leaves . . .- . . . += « G,. columbinum 
Flower stalks not exceeding the leaves. 
Beak of seed capsule 1 in. long . . . . . . . G. Bicknellu 
Beak of seed capsule about 4 in. long . . . . . G. dissectum 
Leaves cleft from 4 to # to the base. 
Blower ‘stalle with a ‘single flower ©. - = = | = «= Ge (sibiricum 
Flower stalk with 2 flowers. 
Leaves nearly round, sinuses extending not more than half way to 
DERE a 4 . . G. rotundifolinm 
Sinuses extending more “than half! way ‘to base. 
Flowers in compact clusters . - . G. carolinianum 
Flowers in loose clusters, leaves rounded. 
Garpelsahairye st. Bot Welesa ae lap ee ati eeGr pustihom 
Carpels= noteshairym <.\fekocs sos Uy ee lata is G. molle 
iMeaves\idividedssintoy 7 spartsy omelet) ee) Ween =) aie G pratense 
1. G. maculatum, L. (Fig. 1, pl. 84.) Crane’s Birt. Stem 1 to 
2 ft. high, erect, hairy; leaves about 5-parted nearly or quite 2/3 to base, 
the basal ones on long leaf-stalks, more or less rounded, 3 to 6 in. wide. 
Flowers in loose clusters at upper end of stem. Petals light purple; 
sepals slender pointed. Common in woods. April-July. 
2. G. Robertianum, L. (Fig. 3, pl. 84.) Hers Ropert, Annual 
or biennial. Extensively branching, the branches prostrate or partly 
erect, often covered with sticky hairs. Leaves deeply divided into lobes 
which are distinct to the base, the lobes also deeply incised. Leaf-stalks 
longer than the leaves. Flowers, 2 on a stalk exceeding the leaves; 
petals red-purple, sepals velvety, awl-shaped. The plant has a strong and 
rather unpleasant odor, Common in rocky woods. May-Oct. 
3. G. carolinianum, L. (Fig. 2, pl. 84.) CARoLInaA CRANE’S-BILL. 
Erect, diffusely branched, stems hairy, 6 to 15 in. high. Leaves divided 
into about 5 to 7 lobes, the sinuses extending rather more than half way 
