I32 ROSE FAMILY 



bescence; leaflets minute, scale-like, imbricated. Petals 

 white, exceeding the short sepals. Stamens 15. Pistil only 1. 

 (Ivesia santolinoides Gray.) 



The peculiar, worm-like leaves form the most striking fea- 

 ture of this plant, which may also be known by its very dif- 

 fuse panicle of numerous flowers. It always grows in sandy, 

 open places and is especially plentiful on the gravelly domes 

 around the Yosemite. It was first discovered by H. N. 

 Bolander, of the State Geological Survey, along the Merced 

 River at 9000 ft. alt. 



10. SIBBALDIA. 

 1. S. procumbens L. Leaves softly hairy, compound, with 

 3 terminal leaflets, the lower petioles ^2 to 3 

 in. long; leaflets broadly wedge-shaped, 3 to 

 5-toothed at apex, % to 24 in. long, short- 

 stalked. Flowers few, distinctly pediceled. 

 Petals 5, yellow, spatulate, shorter than the 

 calyx. Stamens 5. Pistils 5 to 20, the fruit 

 dry. 



The general appearance of Sibbaldia sug- 

 gests strawberry plants, but the numerous 

 flowering stems, 2 to 6 in. high, all spring from a mat of basal 

 leaves on a strong, perennial taproot, there being no creep- 

 ing stems. It grows only on the higher mountains and is 

 much dwarfed above timber-line. 



11. GEUM. 



1. G. macrophyllum Willd. Stems erect, 1 to 2 ft. high, 

 stiff-hairy. Leaves mostly basal, 4 to 18 in. long including 

 the petiole; the terminal leaflet nearly orbicular, lobed and 

 coarsely toothed, 2 to 6 in. wide; other leaflets smaller, some 

 minute. Flowers yellow, J /> to 24 m - across, calyx-lobes 

 reflexed. Stamens numerous. Pistils numerous. 



This perennial herb is at once recognized by the bur-like 

 fruits and odd leaves, the large, terminal leaflet being out of 

 all proportion to the others. It grows in shaded places from 

 the foothills and Yosemite Valley to Tuolumne Meadows. 

 In G. triflorum Pursh., of Tahoe and northward, the leaves are 

 cut into many narrow segments, the flowers are purplish, and 

 the akenes have straight, feathery tails. 



12. CHAMAEBATIA. 

 1. C. foliolosa Benth. Kit-kit-dizze. A low intricately 

 branched fragrant shrub. Leaves obovate-oblong, l / 2 to 3 in. 



