MALLOW FAMILY. 



239 



flowers on separate plants, the pistillate flowers being 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 foliaceous, palmately divided into filiform segments 



1. S. diploscupha. 



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

 minutely bracteate; herbage mainly stellate-pubescent 



2. S. Hartwegi. 



Carpels longitudinally grooved or striate-nerved on back. 



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



Stout perennial; stipules 3 to 6 lines long 4. 8. calycosa. 



Petals deeply emarginate; perennials. 

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



carpels slightly rugulose-reticulate 5. S. malvzefiora. 



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



achenes smooth on back 6. 8. Oregana. 



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

 white; perennial.— IlEsi-ERAi.t ea. 



Flowers dioecious or subdioecious; spikes short and dense, panicled; 

 carpels smooth If. 8. 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 fili- 

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

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

 to 1^ in. long, minutely erose-dentieulate; 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 fields or low hills: Sacramento Valley; Coast Range valleys 

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

 Newark. Alameda Co. May. 



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

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

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

 northward 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 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 



