242 MALVACK^i;. 



1. M. exile Gruy. Herbage with a short stellate pubescence, a«d 

 often with some Innsjer spreading hairs; stems branching from the 

 base, ditfuse or decumbent, 4 or 5 in. to IJ ft. long; leaves palmately 

 8 to 5-cleft, the lobes commonly laciuiaiely toothed; flowers of dif- 

 ferent plants of two intergrading sorts, one chiefly pistillate with 

 small white or rose-oolured 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 stronijly rugose. 



Prom the San Joaquin Valley (Merced plains, Bakersfield and 

 Buena Vista Hills), westward to Monterey (Jo. and southward to 

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

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

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

 G-reene 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. Fremontr Torr. "Woody at base, stout, 2 to 3 ft. highi 

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

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

 flower-clusters se.'<sile in the axils or short-peduncled, interrupted- 

 spioate 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. Diatjo; Corral Hollow ("flowers fragrant like roses," iJj'etcer); 

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

 June. Var. ceeoophorum Robin-son. Calyx 7 to 9 lines long, its 

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

 petals. — Arroyo del Valle, Alameda Co., Greene. June. 



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

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

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

 at base, more or less rugose, i-anescent-tomentose beneath, becoming 

 green above, dentately toothed, f to 2 in. long, on petioles J to f as 

 long; flower-clusters ses.sile in the upper axils and at the ends of the 

 branches, forming long interrupted unilateral spikes; bractlets linear- 

 filiform, equaling the tomentose 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, Enxtwood, May, 1896; Los Gatos and 

 fcjiithills near Evergreen ^east side of the Santa Clara Valley), ace. to 

 Davy. 



4. M. fasciculatum (Nutt.) 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 subcordatc at base; flowers in sessile or short pedunoled clusters, 

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



