210 ROSACEAE. 



lobes; petals narrowly cuneate, notched at apex, exceeding the calyx. — (Horke- 

 lia fusca var. tenuiloba Torr.) 



Laguna of Santa Rosa Creek, Bigelow, 1854. Var. micheneri Jepson. 

 Leaves 3 in. long, villous when young, glabrate in age; leaflets crowded, 

 the lobes narrowly oblong, obtuse; cymes very much condensed; petals cuneate- 

 obcordate; filaments broadly dilated, of nearly uniform breadth from base 

 to apex. — Mt. Tamalpais, Michener. 



9. P. bolanderi (Gray) Greene. Stems very sparingly leafy, 2 to 10 in. 

 high, the leaves mainly tufted on the branching crown of the root, densely 

 hoary-pubescent, 1 to 2 in. long; leaflets cuneate-obovate, 2 or 3 lines long, 

 toothed or cleft at apex, the teeth acute; flowers in a rather open cyme; calyx 

 2 lines long, about equaling the white oblong-spatulate petals; calyx-lobes and 

 bractlets lanceolate; achenes minutely granular. — (Horkelia bolanderi Gray.) 



Dry hills about the southern shores of Clear Lake; to be expected in north- 

 eastern Napa Co. July. 



9. AGRIMONIA L. Agrimony. 



Perennial herbs with pinnate leaves and serrate leaflets. Flowers yellow, in 

 racemes. Bracts 3-cleft. Calyx-tube turbinate, contracted at the throat and 

 the upper part beset with a ring of hooked prickles, indurated in fruit and 

 enclosing the 2 achenes; calyx-limb 5-cleft, the lobes closing over the throat 

 after flowering. Stamens 5 to 15. Styles terminal. (Corruption of the Greek 

 word argema, a disease of the eye, the plants reputed to be medicinal.) 



1. A. gyrosepala Wallr. Common Agrimony. Stems erect, 2 to 3 ft. 

 high; herbage glandular, and both hirsute and puberulent; leaflets .5 or 7, 

 with interposed smaller ones, ovate or obovate, 3^2 in. long or less, coarsely 

 toothed, entire at the base ; terminal leaflet usually largest and cuneate at base ; 

 flowers 2y 2 lines long. — (A. eupatoria of Bot. Cal.) 



Borders of woods in the mountains: Elk Mt., Lake Co.; northern Sierra 

 Nevada. 



10. ACAENA L. 



Perennial herbs with a woody base, pinnate leaves and pinnatifid leaflets. 

 Flowers in more or less crowded spikes. Calyx persistent, its tube oblong, 

 contracted at the throat, at length armed with retrorsely barbed prickles; limb 

 5 to 7-parted, valvate, deciduous. Petals none. Stamens commonly 3 to 5, 

 but varying from 1 to 10. Pistils 1 or 2, free and distinct; style terminal; 

 ovule solitary, suspended. Achene enclosed in the indurated calyx. (Greek 

 akaina, a thorn, in reference to the spines on the calyx.) * 



1. A. trifida E. & P. Flowering stems erect with decumbent base, 5 to 13 

 in. high, sometimes almost naked, the leaves borne mostly at base or tufted 

 on the "short woody branches of the root-crown; herbage villous, especially when 

 young, and more or less silky on the under surface of the leaves; leaflets 11 

 to 17, nearly uniform, 3 to 4 lines long, pinnately cleft into 3 to 7 segments; 

 flowers green, in a crowded spike, or the lower flowers remote ; calyx-tube 

 while-hirsute with short hairs and armed with slender prickles, in fruit 4- 

 angled; stamens 'lark purple; achene round-oblong. 



Dry or rocky soil of hilltops in the Coast Ranges near the ocean from 

 Marin Co. and the Oakland Hills to the Gabilan Range and Monterey. June. 



11. ALCHEMILLA L. Lady's Mantle. 

 (Virs a diminutive annual herb with palmately-lobed leaves and sheathing 

 stipules. Flowers minute, greenish, pedieeled and fascicled in the axils. Calyx 



