MALLOW FAMILY. 259 



foliaceous, palmately divided into filiform segments 1. S. diploscypha. 



Tipped with a soft and hairy, at length deciduous beak; flowers minutely bracteate; 



herbage mainly stellate-pubescent 2. 5". hartwegii. 



Carpels longitudinally grooved or striate-nerved on back. 



Slender annual; stipules 1 to 2 lines long 3. 5". sulcata. 



Stout perennial; stipules 3 to 6 lines long 4. 5". calycosa. 



Petals deeply emarginate; perennials. 



Raceme mostly loose, terminating a simple stem; flowers gynodoecious; carpels slightly 



rugulose-reticulate . 5. 5. malvacftora. 



Stem commonly branching, the terminal spikes dense; flowers perfect; achenes 



smooth on back 6. S. orcgana. 



Leaves vitiform, angulately 5 to 7-lobed, none parted or divided; flowers white; perennial. — 

 Hesperalcea. 

 Flowers dioecious or subdioecious; spikes short and dense, panicled; carpels smooth.... 



7. S. malachroides. 



1. S. diploscypha (T. & G.) Gray. Annual, erect and simple, or more 

 robust and branching, 7 to 20 in. high, pilose-hispid, and also with a minute 

 stellate pubescence; radical leaves more or less deeply crenate, the cauline 

 parted and 2 to 3-cleft, the bracteal filiform divided; flowers on short pedicels 

 in umbellate clusters at the ends of the branches ; calyx-lobes lanceolate-sub- 

 ulate ; petals nearly 1 to 1^4 in. long, minutely erose-denticulate ; filaments of 

 the outer series united nearly to the summit into sets of 5 to 10; carpels nearly 

 orbicular, dorsally reticulated; receptacle at separation of the achenes marked 

 by as many obtuse longitudinal processes as there are carpels. 



Open valley fields or low hills: Sacramento Valley; Coast Eange valleys from 

 Humboldt and Sonoma cos. southward to Mt. Diablo and Newark. May. Var. 

 minor Gray. Flowers tending to be disposed in lax spicate racemes ; corolla 

 with a dark purple center, about % in. long; carpels rugose. — Sacramento 

 Valley. 



2. S. hartwegii Gray. Slender annual, sparingly branched, about 1 ft. 

 high, sparsely stellate-pubescent or almost glabrous below, but scarcely or not 

 at all hispid; leaves pedately 5 to 7-divided into linear entire divisions or the 

 lower with broader trifid divisions ; flowers few in a short spike ; filaments of 

 the outer series closely approximating the inner, more or less united in pairs 

 or sets as in the perennial species; corolla rose-purple, 6 to 8 lines long; carpels 

 strongly incurved, favosely rugose-reticulated. 



Sierra Nevada foothills: Butte Co. to Calaveras Co. (and Mariposa Co. ace. 

 to Syn. Fl.) North Coast Ranges near Rutherford. May. 



3. S. sulcata Curran. Annual, slender, unbranched, or sparingly branched, 

 11 to 14 in. high; leaves small (mostly % in. long or less), the lower crenate, 

 the upper divided into about 6 often narrowly linear divisions; stipules 1 to 2 

 lines long; raceme spike-like or loose, few-flowered; calyx purplish, sparingly 

 hairy, its lobes narrowly ovate, acuminate; corolla 8 or 9 lines long. 



Petaluma; northern Sierra Nevada foothills. May- June. Perhaps too near 

 the next. 



4. S. calycosa M. E. Jones. Perennial; rootstocks creeping, branched; 

 stems green or purplish, very succulent, decumbent and rooting freely below, 

 iy 2 to 2y 2 ft. high; herbage glabrous below or sparingly hirsute above; rad- 

 ical leaves 3 to 4 in. broad, crenately but shallowly incised; cauline leaves 

 divided into about 8 or 9 broadly cuneate divisions; stipules round or ovate, 

 acuminate, or obtuse and toothed, green or purple, 3 to 6 lines long; flowers 

 in terminal short spikes; calyx rather densely covered with sandy-brown hairs, 

 its lobes ovate, acuminate, 3 to 6 lines long; corolla 1 in. long, lilac; carpels 

 grooved in the back or with the grooves sparingly interrupted transversely, 

 minutely reticulate on the sides, the slender beak weak but persistent. 



