72 Spring Flora of Ohio. 



Vi'-ci-a a-mer-i-ca'-na Muhl. Vetch.— Glabfous; leaflets 10-14, ellip- 

 tical or ovate-oblong, very obtuse ; peduncles 4-8-flowered ; flowers 

 purplish, 8 lines long. 



XXXVIII. Order GE-RA-NI-A'-CE->E. GERANIUM i FAMILY.— Herbs; 

 flowers regular, o-merous ; stamens somewhat united ; ovary deeply- 

 lobed ; carpels 5, separating from the styles when mature ; leaves 

 lobed or divided. 



stamens 10 rarely 5), base of styles recurving, naked inside Geranium. 1 



Stamens with anthers 5, styles in fruit twisting spirally, bearded. £;-orf/j<>«. 2 



1. Genus GE-RA'-NI-UM. — Stamens all with perfect anthers, the o 

 longer with glands at their base (sometimes onl}' 5 stamens). 



A. Flozcers large; rootstock perennial. 



Ge-ra'-ni-um mac-u-la'-tum L,. Wild Cranesbill. — Leaves about 5- 

 parted, the divisions wedge-shaped, lobed and cut at the end ; petals 

 entire, light-purple, bearded on the claw.' 



A. Floiuers small ; root biennial or annual. 



b. Leaves ternately much-dissected ; heavy-scented. 



Ge-ra'-ni-um ro-ber-ti-a'-num L. Herb Robert. — Diffuse, strong- 

 scented ; sepals awned, shorter than the red-purple petals. 



(b. Leaves palmately-lohed or dissected. 



Ge-ra'-ni-um car-o-li-ni-a'-num L. Cranesbill. — Stems at first erect, 

 diffusely branched from the base ; leaves about o-parted, the divisions 

 cleft and cut into oblong-linear lobes ; sepals awn-pointed ; variable. 



The following European species are occasionally found : G. dissectum more 

 slender and spreading, with narrower lobes to the crowded leaves, seeds finely and 

 deeply pitted' ; G. rotundi/olium with the habit of the next but seed of the last^ 

 villous with long white hairs ; G. pusillum ;stems procumbent, slender, the 

 leaves round-kidney form, sepals awnless, seeds smooth; ; G. tnolle like the last) 

 more pubescent, seed slightly striate;, and G. cohimbinum with peduncles and 

 pedicels filiform and elongated, seeds nearU' as in G. dissectum). 



2. Genus E-RG'-DI-UM. — The o shorter stamens sterile or want- 

 ing; styles in fruit twisting spirally, bearded inside. 



E-ro'-di-um ci-cu-ta'-ri-um L'Her. Storks^-bill. — Stems low, spread- 

 ing; leaves pinnate, leaflets sessile, 1-2-pinnatifid. 



XXXIX. Order OX-AL-i-DA-CE-/E. WOOD-SORREL FAMILY.— Herbs; 

 leaves trifoliate; flowers -j-merous; fruit a 5-celled pod. 



