242 



MALVACEAE. 



1. M. exile Gray. Herbage with a short stellate pubescence, and 

 often with some longer spreading hairs; stems branching from the 

 base, diffuse or decumbent, 4 or 5 in. to 1£ ft. long; leaves palmately 

 3 t'> 5-cleft, the lobes commonly laeiniately toothed; flowers of dif- 

 ferent plants of two intergrading sorts, one chiefly pistillate with 

 small white or rose-colored corollas (3 to 5 lines long), the other 

 perfect and with much larger rose-colored corollas (6 to 10 lines long); 

 calyx with an involucre of 3 slender bractlets; calyx-lobes ovate, 

 very slenderly acuminate or even subulate; carpels strongly rugose. 



From the San Joaquin Valley (Merced plains, Bakersfield and 

 Buena Vista Hills), westward to Monterey Co. and southward to 

 Southern California; not recorded as within our limits. Apr.-June. 

 The description of the partly gyno-dioecious flowers is taken from Dr. 

 Robinson's clear characterization in the Synoptical Flora. M. Parryi 

 Greene from Monterey Co. and the San Joaquin Valley is determined 

 by the same authority to be the perfect-flowered form with large 

 corollas. 



2. M. Fremonti Torr. Woody at base, stout, 2 to 3 ft. high? 

 densely white-tomentose; leaves very thick, round-ovate, shallowly 

 5 to 7-lobed, crenate, 2 to 4 in. broad, on petioles \ to 1 in. long; 

 flower-clusters sessile in the axils or short-peduncled, interrupted- 

 spicate at summit of stem; calyx ovate, densely and closely woolly, 

 only the tips of the lobes visible, almost equaled by the 3 linear- 

 setaceous bractlets of the involucre; corolla rose-color, 7 or 8 lines 

 long; carpels thin, smooth, promptly dehiscent. 



Mt. Diablo; Corral Hollow (" flowers fragrant like roses," Brewer); 

 southward through the Mt. Diablo Range to San Bernardino Co. 

 June. Var. cercophorum Robinson. Calyx 7 to 9 lines long, its 

 lobes lance-linear and caudate-attenuate, nearly or quite equaling the 

 p tals. — Arroyo del Valle, Alameda Co., Greene. June. 



S. M. arcuatum (Greene) Robinson. Shrub 6 to 8 ft. high, with 

 virgate terete branches covered with a dense or felt-like white tomen- 

 tuni; leaves ovate to ovate-orbicular, little or not at all lobed, truncate 

 at base, more or less rugose, canescent-tomentose beneath, becoming 

 green above, dentately toothed, | to 2 in. long, on petioles \ to § as 

 long; flower-clusters sessile in the upper axils and at the ends of the 

 branches, forming long interrupted unilateral spikes; bractlets linear- 

 filiform, equaling the "torn entose calyx; petals rose-color, 7 to 9 lines 

 long. — (Malveopsis arcuata Greene.) 



San Mateo Co., first collected by Greene on stream banks back of 

 Belmont; Crystal Springs, Eastwood, May, 1896; Los Gatos and 

 foothills near Evergreen (east side of the Santa Clara Valley), acc. to 

 Davy. 



4. M. fasciculatum (Xutt.) Greene. Shrub 5 to 10 ft. high, with 

 long slender wand-like branches; pubescence short and close; leaves 

 round-ovate, irregularly or obscurely lobed, crenate, mostly truncate 

 or subcordate at base; 'flowers in sessile or short pedunc'.ed clusters, 

 ■which are loosely paniculate or disposed on short branches in a very 



