geranium. GERANIACE^:. 105 



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

 rowed above. California and Oregon. 



Order XVII. GERANIACEiE 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. 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. Geranium. 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 avvned : carpels hairy, at maturity detached from the 

 axis and borne on the recurved style. 



Gr. Carolinians m L. 8p. 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 flesh-color, equalling the awned sepals: carpels pubescent : 

 seeds obscurely reticulated. Common from Brit. Columbia to California 

 and across the continent. 



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

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

 +- +- Fepals not awned, mature carpels detached from the axis 



and some on the recurved style. 



H. molle L. Sp. PI. ii, 682. Low, slender, diffuse, the branches a few 



