MALVACEJ*:. 63 



1. H. concinnum, Benth. Erect, wiry, very leafy, suffrulescent at 

 base, )4 — 1 ft- high: leaves thickiah and somewhat eonduplieate, linear 

 or linear-oblong, acute: cyme few-flowered: fl. 1 in. broad: sepals ovate, 

 acuminate: stamens oo, in 3 fascicles. — Common on bushy hillsides in 

 clayey soil, at middle elevations of the Coast Range. May, June. 



2. H. anagalloides, Ch. & Schl. Diffusely branching, slender, pros- 

 trate or assurgent, stoloaiferous, forming a mat a foot or more in breadth: 

 leaves oval or elliptical, }£ — % in- long, obtuse, clasping, only half as 

 long as theinternodes: inflorescence leafy-paniculate-cymose; fl. scarcely 

 2 lines long, the obovate- or linear-oblong sepals exceeding the petals : 

 stamens 15 — 20, nearly or quite distinct. — In wet places. 



3. H. lTiutilum, L. Stem flaccid, erect, widely branching, 6 — 20 in. 

 high: leaves ovate to narrowly oblong, obtuse, partly clasping, 5-nerved; 

 cymes numerous, leafy; fl. 2 lines broad: sepals narrow, erect: stamens 

 5 — 12, distinct. — Shores of the Sacramento in Solano Co., Jepson. 

 Annual; common on the Atlantic slope; possibly introduced with us. 



4. H. Scouleri, Hook. Erect, 1 — 2 ft. high, mostly simple up to the 

 cyme of few and large flowers: leaves ovate to oblong, obtuse, 1 in. long 

 or less: sepals ovate, 2 lines long: petals 4 or 5 lines: stamens 60 or 

 more, in 3 fascicles. — On Howell Mountain, Napa Co., along streamlets. 



Oedeb xxii. MALVACE£. 



Herbs or shrubs, with alternate stipulate leaves and a more or less 

 stellate pubescence. .Flowers usually perfect, complete and regular; 

 the 5-cleft valvate and persistent calyx often subtended by a supple- 

 mentary whorl of bracts and thus appearing double. Petals 5, 

 hypogynous, at base commonly joined to each other and to the base of 

 the tube of the monadelphous stamens, convolute in bud. Stamens 5 — 

 oo , more or less completely monadelphous and sheathing the styles; 

 anthers usually reniform, 1-celled. Ovaries either distinct and forming 

 a ring around a central columnar elevation of the receptacle, thus 

 becoming achenes, or joined into one 5— 10-celled organ and becoming 

 more or less capsular. Seeds usually roundish, with little or no 

 albumen. 



Calyx with S-lobed involucre at base Lavatera 1 



Calyx 1 — S-bracted at base; 



Fruit a whorl of 1-seeded carpels; 



Styles stigmatic lengthwise; 



Stamineal column single Malva 2 



" " double SlDALOEA 8 



Styles with terminal stigma; 



Seeds pendulous Sida 4 



" ascending Malveopsis 5 



Fruit a 5-celled capsule; 



Involucre wanting Abutilon 6 



" of many bractlets Hibiscus 



