GERANIUM FAMILY. 



247 



3. ERODIUM L'Her. Storksbill. 

 Annual herbs. Leaves opposite, often unequal, either simple or 

 pinnate, with one interpetiolar stipule on one side and two on the 

 other. In vegetative characters very similar to Geranium; the flower 

 and fruit nearly the same, but the stamens with anthers 5 only, the 

 alternate filaments sterile and scale-like. Styles in fruit twisting 

 spirally, bearded inside. Pedicels after anthesis commonly retro- 

 curved. (Greek erodios, a heron.) 



Leaves reniform-cordate, lobesf(if any) shallow 1. E. macrophyllum. 



Leaves oblong to oblong-ovate, pinnatifid or pinnate. 



Leaves pinmiti fid; sepals bristle-tipped 2. E. Botrys. 



Leaves pinnate with serrate or merely ineised leaflets; petals with naked 



claw; sepals not terminated by bristles 3. E. moschatum. 



Leaves pinnate with pinnatifid leaflets; claw of petals ciliate; sepals with 

 1 or 2 terminal bristle-like hairs 4. E. cicutarium. 



1. E. macrophyilum H. & A. Acaulescent or subacaulescent, 

 tomentose, with interspersed spreading glandular hairs; leaves rcni- 

 form-cordate, crenate and often with shallow crenate lobes, 1 to 1^ in. 

 broad; umbels mostly 2 to 3-flowered, on elongated (4 to 9 in.) pedun- 

 cles; petals white, 5 to 8 lines long, little exceeding the broad sepal.-; 

 filaments conspicuously orbicular-dilated at base; beak of fruit stout; 

 mature carpels densely silky-hairy, truncate at top, 4 lines long. 



Willows, Jepson; Anderson valley, Bolander, no. 4805; Kirker 

 Pass, Brewer; Stockton, Fitch; Tracy, Bioletti, and southward. 

 Whole leaf blade sometimes undulate and with closed sinus. 



Var. Californicum (E. Californicum Greene). Tall and branch- 

 ing, puberulent and beset with purple-lipped glandular hairs; leaves 

 larger, 2 in. broad; flowers frequently about 5 or 6 in a cluster; petals 

 deep rose-red or purple. — Oakland Hills, Blasdale. 



2. E. Botrys Bertol. Caulescent, branching from the base and 

 commonly prostrate; coarsely white-pubescent, leaves 1 to 2 in. long 

 on petioles as long or twice as long, oblong-ovate, pinnatifid, the 

 lobes serrate, acute; sepals short-pointed and tipped with 1 or 2 short 

 bristles; petals deep violet; glands greenish; filaments dilated nearly 

 to apex and toothed. 



Naturalized plant, scarcely known in California ten years ago, but 

 within that time become common in many localities from Marin and 

 Solano Cos. to northern California, spreading with especial rapidity 

 over low pastured hills and rolling gravelly plains. 



3. E. moschatum L'Her. Filaree. Musk Clover. Hirsute 

 with scattered spreading hairs, at first acaulescent, the radical leaves 

 often forming a close rosette upon the ground; later Avith stout fleshy 

 ascending stems £ to 1 ft. high; leaves 2 or 3 in. to 1£ ft. long: 

 leaflets ovate to elliptical, serrate and sparsely incised, short-petiolatc. 

 f to 1£ in. long, the terminal cuneately 3 to 5- parted; stipules large, 

 membranaceous; peduncles in the axil of the smaller of the unequal 

 opposite leaves, much elongated in fruit, 4 to 11 in. long; sepals not 

 bristle-bearing at tip; petals rose-purple, 3 lines long, with short 

 claws; beak of the fruit 1£ to If in. long; filaments membranously 

 winged at base, with upwardly pointing teeth. 



