' GERANIUM. GERANIACE. 105 
septa incomplete extending half way to the axis below the middle, nar- 
rowed above. California and Oregon. 
Orper XVII. GERANIACEA J. St. Hil. Expos. Fam.ii, 51. 
Herbs or shrubs with toothed, lobed or compound leaves, 
pérfect regular or irregular but commonly symmetrical flow- 
ers on axillary peduncles. Sepals 5, imbricated in the 
bud. Petals 5, general'y imbricated in the bud. Stamens 
mostly in two sets, those alternate with the petals sometimes 
sterile: filaments either dilated or monadelphous at base. 
Ovary formed of 5 1-celled carpels around a central axis with 
2 anatvopous ovules in each cell of which only J matures, 
separating elastically at maturity from the long-beaked and 
indurated central axis from below upward, the styles form- 
ing long tails which become revolute upward, or spirally 
twisted. Embryo filling the seed. Cotyledons convolute 
pleated and incumbent on the radicle. 
1. Gerahium. Fertile stamens 10; tails of the carpels not bearded. 
2. Erodium. Fertile stamens 5, tails of the carpels bearded. 
1 GERANIUM L. Gen. n. 832. 
Usually caulescent herbs with simple radiately-divided, petioled 
stipulate leaves and 1-3 flowered peduncles with a 4-bracted in- 
volucre at the ba e of the pedicels. Sepals 5, imbricated in the 
bud, persistent. Petals 5, deciduous. Stamens 10, all antherifer- 
ous (except in G. pusillum), mostly united a little at base ; fila- 
ments slender in 2 sets, with a gland behind the base of each of 
the shorter ones. Ovary 5-lobed, 5-celled: style 5-lobed at the 
summit, the lobes stigmatic on the inner face. Carpels at ma-. 
turity separating from the long-beaked ‘axis and borne on the re- 
curving persistent beardless styles, (except in G. pusillum). 
* Annuals with small flowers, the petals not exceeding the sep- 
als: perhaps introduced, but now thoroughly naturalized. 
+ Sepals awned: carpels hairy, at maturity detached from. the 
axis and borne on the recurved style. 
G. Carolinianum L. Sp. ii, 682. Erect, diffusely much branched from 
the base or nearly simple 4-20 inches high, pubescent: leaves 1-24 inches 
in diameter, palmately 5-7-lobed or parted, the divisions cleft into oblong - 
linear lobes: pedicels short, crowded at the end of branchlets: petals ob- 
cordate, pale flesh-color, equalling the awned sepals: carpels pubescent: 
seeds obscurely reticulated. Common from Brit. Columbia to California 
and across the continent. 
G. pissecrum L. Ameen. iv, 282. Decumbent. or ascending, 6-20 
inches long, dichotomously branched, pubescent: leaves 5-7-parted; the 
divisions deeply and unequally cleft into linear Jobes: peduncles elongated 
usually solitary in the forks of the branches: petals rose-color, a little 
longer than the ovate acuminate sepals: carpels hairy: seeds strongly 
reticulated. Cultivated grounds about the mouth of the Willamette river. 
+ + Sepals not awned, mature carpels detached from the axis 
and some on the recurved style. 
G. motu L: Sp. Pl. ii, 682: Low; slender, diffuse; the branches a few 
