214 ROSACEAE 



1. A. eupatoria L. Common Acrimony. Stems erect, 2 to 3 feet higli; herbage 

 glandular, and both hirsute and puberulent; leaflets 5 or 7, ovate or obovate, 

 coarsely toothed, entire at base, 1 to S^./o inches long, also with intei-posed smaller 

 ones 1 to 5 lines long; flowers 2^2 lines long; fruiting calyx-tube with about 10 

 ridges, its bristles many, some of them erect, some spreading or reflexed. 



Borders of woods in the mountains, 2500 to 4500 feet, widely disseminated but 

 rare: Southern California mountains; North Coast Ranges; northern Sierra Ne- 

 vada. North to Washington, east to the Atlantic coast. June- Aug. 



Locs. — S. Cal. mts. : Cuyamaca Mts., Palmer 84 ; Palomar Mt., T. Brandcgee ; Yucaipa Canon, 

 San Bernardino Mts., C. M. Wilclrr; Totato Canon, San Bernardino Mts. (PI. "World 20: 2] 8). 

 North Coast Banges: Howell Mt., T. Brandegee; Mt. St. Helena, Alice King ; Cobb Mt., Lake Co., 

 If. S. Baker 2232a; Tunis Mill, Elk Mt., Lake Co., Jepson 13,865. Northern Sierra Nevada: 

 Greenville, Plumas Co., Hall # BahcocTc 4428; Whitmore, Shasta Co., A. A. Wcigart. In all Cali- 

 fornia plants examined the calyx-tube is glandular but not hispid. In most European specimens 

 it is very hispid but in some glandular and glabrous as in ours. 



Refs. — Agrimonia eupatoria L. Sp. PI. 448 (1753), type from Europe; Jepson, Man. 500, 

 fig. 496 (1925). A gryposepala Wallr. Beitr. Bot. 1:49 (1842), Pennsylvania and Peaks of 

 Otter, Va.; Jepson, Fl. W. Mid. Cal. 284 (1901), ed. 2, 210 (1911). 



17. ACAENA L. 



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

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

 at the throat, at length armed with retrorsely barbed prickles. Calyx-lobes in ours 

 5, valvate, deciduous. Petals none. Stamens in ours 3 to 5. Pistil 1, sometimes 2 ; 

 style terminal; stigma multifid-feathery; ovule solitaiy, suspended. Achene en- 

 closed in the indurated calyx. — Species about 100, California, Hawaii, South 

 America, South Africa, Australia and islands of the southern hemisphere. (Greek 

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



1. A. pinnatifida R. & P. var. califomica Jepson. Stems erect with decum- 

 bent base, 5 to 13 inches high, sometimes almost naked, the leaves mostly at base 

 or tufted on the short woody branches of the root-crown; herbage villous; leaflets 

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

 calyx-tube in fruit prickly, 4-angled; stamens dark purple, exserted. 



Dry or rocky soil of hilltops or north slopes near the ocean, 25 to 1500 feet : 

 Sonoma and Contra Costa Cos. to Monterey Co, May-June. 



Locs. — Watson School, Bodega, Jepson 15,933 ; Novato, Marin Co., Jepson 9056 ; Berkeley 

 Hills, Jepson 9639; Oakland Hills, Jepson 10,396; Crystal Springs Lake, San Mateo Co., C. F. 

 BaTcer 688; San Juan, San Benito Co., Brewer 719; Gigling sta., Monterey Co., Heller 6712. 



Eefs.— AcAENA PINNATIFIDA R. & P. PI, Per. et Chil. 1:68, t. 104b (1798), type loc. Chile. 

 Var. CALiFORNicA Jepson, Man. 501, fig. 497 (1925). A. califomica Bitt. Biblio. Bot. 74:116 

 (1910), type from Cal. A. trifida Cal. auct.; Jepson, PL W. Mid. Cal. 284 (1901), ed. 2, 210 

 (1911), A. pinnatifida Torr. Bot. Mex. Bound. 63, pi. 19 (1859). 



18. SANGUISORBA L. Burnet 



Herbs with unequally pinnate leaves. Flowers small, perfect, polygamous or 

 dioecious, crowded in a dense head or spike at the summit of a long naked peduncle. 

 Calyx-tube turbinate, constricted at tlie throat, persistent, its lobes 4, spreading, 

 deciduous. Petals none. Stamens (in ours) 2 or 4. Pistil 1. Achene enclosed 

 in the 4-angled dry calyx. — Species about 30, north temperate zone. (Latin san- 

 guis, blood, and sorbere, to absorb, the plant anciently a styptic.) 



Stigmas cleft into narrow segments (brush-like). 



Leaflets ineisely pinnatifid ; fruiting calyx narrowly 4-winged, smooth or finely reticulate on 



the faces between the angles; annual 1. S. annua. 



Leaflets serrate ; fruiting calyx 4-angled, irregularly and roughly thick-ridged and alveolate 



on the faces between the angles; perennial 2. S. minor. 



Stigmas muricate-papillose ; leaflets merely serrate; fruiting calyx 4-angled, with thick ridges 

 and smooth intervening faces; perennial 3. S, officinalis. 



