GERANIUM. GERANIACETI*;. 105 



septa incomplete extending half way to the axis bslow the middle, nar- 

 rowed above. California and Oregon. 



Order XVII. GERANIACEJS J. St: Hil. Expos. Fam.ii, 51,. 



Herbs or shrubs with toothed, lobed or compound leaves, 

 perfect regular or irregular but commonly symmetrical flow- 

 ers on axillary peduncles. Sepals 5, imbricated in the 

 bud. Petals 5, generally 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 1 matures, 

 separating elastically at maturity frqm 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. Gerauium. 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), raostlj 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. 



-1- Sepals awned: carpels hairy, at maturity detached from the 

 axis and borne on the recurved style. 



G. Caroliiiiannin L. Sp. ii, 682. Erect, diffusely much branched from 

 the base or nearly simple 4-20 inches high, pubescent: leaves 1-2)^ 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 fiesh-color, equalling the awned sepals : carpels pubescent : 

 seeds obscurely reticulated. Common from Brit. Columbia to California 



and across the continent. 

 • 



G. DissECTUM L. Amoen. iv, 282. Decumbent or ascending, 6-20 

 inches long, dichotomously branched, pubescent: leaves 5-7parted; the 

 divisions deeply and unequally cleft into linear lobes : 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. 

 -1- -1- Sepals not awned, mature carpels detached from the axis 



and some on the recurved style. 



6. MOLLE L. Sp. PI. ii, 682. Low, slender, diffuse, the branches a few 



