GERANIUM. GERANIACE-K. 105 



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

 rowed above. California and Oregon. 



ORDER XVII. GERANIACE.E 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 anatiopous ovules in each cell of which only 1 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. (Derail ill 111. 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 simpleradiately-dividecl,petioled 

 stipulate leaves and 13 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. Caroliuianum 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 flesh-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 5-7 -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. 

 t- *- Sepals not awned, mature carpels detached from the axis 



and some on the recurved style. 



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



