MALLOW FAMILY 485 



young parts stellate-pubescent; leaf -blades rounded, crenate, slightly or scarcely 

 at all 5 to 7-lobed; corolla surpassing the calyx, pale blue, 4 to 7 lines long, 3 to 4 

 times as long as the calyx; carpels 14 or 15, hirsutulous or in age glabrate, not 

 reticulated on the back or only slightly, the margins rounded; calyx enclosing 

 the fruit. 



Naturalized from Europe, waysides and old gardens, 5 to 4000 feet : northern 

 and central California. May-Oct. 



Locs. — Yreka, Butler 1028; Little Hot Springs Valley, Modoc Co., Baker 4" Nuitinf) ; Sur- 

 prise Valley, Modoc Co., Jepson 7852 ; Meadow Valley, Plumas Co., Jepson 10,640 ; Ft. Ross 

 (Erythea 0:26) ; San Francisco, Tinsley 13; Berkeley, Jepson 14,054; Mariposa, Congdon. 



Refs. — Malva rotundifoua L. Sp. PI. 688 (1753), type from Europe; Jepson, Fl. W. Mid. 

 Cal. 238 (1901), ed. 2, 258 (1911), Man. 627 (1925). 



2. M. nicaeensis All. Bull Mallow. Stems erect or spreading, lA to 2 feet 

 high; herbage thinly bristly or hirsute with spreading hairs; leaves like no. 1; 

 pedicels tending to be reflexed in fruit; bractlets ovate or lanceolate; corolla pink- 

 ish, 5 to 6 lines long, 2 to 3 times as long as the calyx; carpels 7 to 9, scantily puberu- 

 lent or in age glabrate, dorsally rugose-reticulate or even somewhat favose, the 

 margin entire or slightly denticulate; calyx-lobes mostly closely valvate over the 

 fruit. 



Naturalized from Europe, waste ground about towns, 5 to 1000 feet : cismon- 

 tane valleys. May-Sept. 



Locs. — Willows, Glenn Co., Davy 4276; Stockton, Sanford; Berkeley, Jepson 10,389a; Alviso, 

 Santa Clara Co., Jepson 10,399; San Bernardino Mission, Parish 2057. 



Refs. — Malva nicaeensis All. Fl. Pedem. 2:40 (1785), type European, M. borealis Jepson, 

 Fl. W. Mid. Cal. 258 (1901), ed. 2, 238 (1911), Man. 627, fig. 626 (1925) ; not M. borealis Wallm. 

 (1798). 



Malva sylvesteis L. Sp. PI. 689 (1753), type from Europe. High Mallow, Corolla mauve 

 or reddish-purple, 1 to 1% inches wide. — Adventive from Europe: Guerneville, Davy 2964; Raw- 

 hide, Tuolumne Co., Williamson. 



3. M. parviflora L. Cheese-weed. Stem widely branching, usually erect, 

 1 to 3 feet high; petioles and ascending branches more or less stellate-hairy on the 

 upper side, glabrous below; leaf -blades roundish in outline, with a red spot at 

 base of blade, shallowly 7-lobed, 1 to 5 inches wide, on petioles more than twice as 

 long as the blade; flowers in rather close axillary clusters; bractlets linear; corolla 

 pinkish with notched petals, 2i/2 lines long, equaling or slightly longer than the 

 calyx ; calyx commonly spreadmg under or about the mature fruit ; carpels about 

 11, sharply rugose-reticulate and pubescent on the back, the margin very narrowly 

 winged and denticulate. 



Naturalized from Europe, gardens and waste lands, 5 to 5000 feet : throughout 

 California. June-Nov. 



Locs. — Eureka, Tracy 4518; Marysville Buttes, Jepson 14,051; Truckee, Sonne; Vacaville, 

 Jepson 14,055; Berkeley, Greene; San Luis Obispo, Summers 100; Farmersville, Tulare Co., 

 L. C. Watson; Tajiguas, Santa Barbara Co., Jepson 11,914; Los Angeles, Ewan 4188; Pomona, 

 Davy 2853; San Bernardino, Parish; San Diego, <7. G. Cooper 435. 



Refs. — Malva parviflora L. Amoen. Acad. 3:416 (1787), type from Europe; Greene, W. 

 Am. Sci. 3:155 (1887) ; Jepson, Fl. W. Mid. Cal. 258 (1901), ed. 2, 238 (1911), Man. 627 (1925). 



4. SIDALCEA Gray. Checker 



Herbs. Leaf -blades rounded, either crenate, crenately incised, parted or di- 

 vided, or palmately lobed, petioled. Flowers in terminal spikes or racemes, either 

 perfect, gynodioecious (that is, with perfect and pistillate flowers on separate 

 plants, the pistillate flowers being smaller and with sterile stamens) or dioecious. 

 Corolla purple, rose-pink or white. Bractlets none, rarely 1. Petals emarginate 

 or truncate. Stamen-tube with double series of terminal free filaments, the fila- 

 ments of the outer series often distinctly below the filaments of the inner series; 



