100 MALVACEAE. HYPERICUM. 



MALVA. 



leafy cymes: sepals foliaceous, unequal, lanceolate to broadly ovate, 1-3 

 lines long, longer than the ovate 1-celled capsule : stamens 15-20. In wet 

 places, Brit. Columbia to California.. 



H. Canadense var. major Gray Man. 80. Stems rather stout and strict, 

 almost simple, 12-18 inches high: leaves lanceolate, 1-2 inches long, 4-6 

 lines broad, more or less clasping, often very acute, glandular dotted be- 

 neath : flowers in somewhat crowded cymes : sepals linear-lanceolate long- 

 pointed; stamens 5-10: capsule very acutely conical, 3-4 lines long: seeds 

 yellow, more or less striate and pitted. Green Lake, King county, Wash- 

 ington and the Eastern States. 



ORDER XVI. MALVACEAE Neck. Act. Ac. Theod. Palat. 2, 488. 



Herbs or shrubs with alternate stipulate mostly palmately 

 veined leaves and usually showy flowers. Flowers regular, 

 hermaphrodite or rarely dioecious or polygamous. Sepals 5, 

 rarely 3 or 4, valvate in the bud, more or less united at base, 

 often having an external calyx or involucre, Petals hypogyn- 

 ous, equal in number to the sepals, twisted in the bud. Stamens 

 hypogynons, commonly indefinite in number, rarely as few as 

 the petals, united below into a monadelphous tube or ring: 

 anthers 1-celled, reniform, bursting transversely. Ovary form- 

 ed of several carpels around a common axis, either distinct or 

 cohering. Styles as many as carpels, united or distinct Fruit 

 capsular or rarely baccate : carpels 1 to many-seeded sometimes 

 closely united, sometimes separate or separable. Seeds cam- 

 pylotropous or heterotropous with little or no albumen. Em- 

 bryo curved: cotyledons foliaceous, twisted and doubled up. 



* Styles stigmatic on the inner face : carpels indehiscent : ovules 

 solitary, ascending. 



1. Malva. Bractlects 1-3, distinct: axis broad, shorter than the numer- 

 ous carpels, filaments in 1 series. 



2. Sidalcea. Bractlets none. Filaments in 2 series ; those of the outer 

 series united into 5 clusters: carpels 5-10, covering the axis. 



* * Stigmas capitate : carpels mostly dehiscent, at least at the 

 apex. 



3* Sphaeralcea. Bractlets 1-3, ovules 2, the lower ascending, the up- 

 per pendulous. 



4. Sida. Bractlets usually none : ovule solitary. 



5. Abutiloii. Bractlets none : ovuled 3-4 in each cell. 



1 MALVA L. Gen. n. 841. 



Hirsute or glabrate herbs with angularly lobed or dissected 

 leaves and mostly showy flowers solitary in the axils of the 

 leaves or rarely in terminal racemes. Calyx 5-cleft, with an in- 

 volucre of usually 3 oblong or setaceous bractlets or rarely none. 

 Petals 5, obcordate. Staminal column divided above into numer- 

 ous filaments. Styles filiform, stigmatic on the inner side. Car- 

 pels numerous with a single ascending ovule in each. Fruit de- 

 pressed, the numerous free carpels separating from the broad and 

 not projecting axis, indehiscent, beakless. 



M. BOREALIS Wall, in Liljebl. Sv. Fl. ed. 2, 218. Annual, erector some- 



