MALLOW FAMILY. 239 



flowers on separate plants, the pistillate flowei-s beina; smaller) or 

 dioecious. Corolla purple, rose-pink or white. Bractlets in ours 

 none, rarely 1. Petals emarginate or truncate. Stamen-tube double, 

 the terminal free portion of the filaments of the outer series often 

 distinctly below the filaments of the inner series; free portion of fila- 

 ments (i. e., the terminal portion, or portion above the tube) more or 

 less united into sets. Fruit consisting of 5 to 9 carpels, commonly 

 beaked. (Sida, a genus of this family, and Alkea, ancient name for a 

 mallow, alluding to the appearance and relationship of these plants.) 



Leaves round in outline, at least some (usually the upper) pedately parted 

 or divided ; flowers in ours rose-pink or purple.— EusiDALCEA. 

 Petals truncate or merely retuse; annuals except no. 4. 

 Carpels rugose-reticulate on back and 

 Beakless; pubescence both stellate and hispid-pilose, especially on 

 calyx ; bracts foliaeeous, palmately divided into filiform segments 



1. S. diploscypha. 

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



minutely braateate; herbage mainly stellate-pubescent 



2. S. nartwegi. 

 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 i. S. calycosa. 



Petals deeply emarginate; perennials. 

 Raceme mostly loose, terminating a simple stem; flowers gynodioecious ; 



carpels slightly rugulose-reticulate 5. S. malvseflora. 



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



achenes smooth on back 6. ^. Oregana, 



Leaves vitiform, angulately 5 to 7-lobed, none parted or divided; flowers 

 white; perennial. — Hesperalcea. 



Flowers dicecious or subdicecious; spikes short and dense, panicled; 

 carpels smooth . . . . . . 7. S. malachroides. 



1. S. diploscypha (T. & G.) Graj'. 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 fili- 

 form divided; flowers on short pedicels in umbellate clusters at the 

 ends of the branches; calyx-lobes lanceolate-subulate; petals nearly 1 

 to IJ in. long, minuteh' erose-denticulate; filaments of the outer 



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

 orbicular, doraally reticulated ; receptacle at separation of the achenes 

 marked by as many obtuse longitudinal processes as there are carpels. 



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

 from Humboldt and Sonoma Cos. southward to Mt. Diablo and 

 Newark, Alameda Co. ^lay. 



Var. minor Gray (S. seoundiflora Greene). Flowers tending to be 

 disposed in lax spicate racemes; corolla with a dark purple center, 

 about f in. long; carpels rugose. — Montezuma Hills (Solano Co.) and 

 northvvard in the Sacramento Valley. 



2. S. Hartwegi 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 trifld 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 



