Jones: Flora of Illinois, 106. Hypericaceae 183 



6. Sphaeralcea St. Hil. 



S. remota (Greene) Fern. Kankakee Mallow. On an island in the Kanka- 

 kee River; also in western Virginia; not otherwise known. June-July. 



7. SiDA L. 

 S. spinosa L. Prickly Sida. Fields and waste ground, common; native of 

 Trop. Am. July-Oct. 



8. Abutilon Mill. — Indian Mallow 



A. theophrasti Medic. Velvet-leaf. Butterprint. Fields and roadsides, com- 

 mon; native of India. Aug. -Oct. 



9. Hibiscus L. — Rose Mallow 



1. Stems 1-2 m. tall; native species. 



2. Leaves glabrous throughout; muddy shores of streams and ponds locally 



throughout 111., except the n. counties. July-Oct H. mditaris Cav. 



2. Leaves pubescent at least beneath. 



3. Leaves glabrous or nearly so on the upper surface; borders of streams, 



ditches, and ponds, rare; n.e. 111. July-Aug H. moscheutos 



3. Leaves velvety-pubescent above; shores of ponds and streams, chiefly in 

 the s. half of the state. Aug.-Oct H. lasiocarpos Cav. 



1. Stem 10-40 cm. tall; leaves 3-7-lobed; plants annual; roadsides, fields, and 



waste places; adv. from s. Eur. Aug.-Oct. Flower-of-an-hour 



H. trioniim L. 



106. Hypericaceae Lindl. — St. John's-wort Family 



I. Petals yellow. 



2. Sepals 4, in unequal pairs, the outer pair larger and bract-like; petals 4 



1. Ascyrum 



2. Sepals 5; petals 5. 



3. Leaves with ordinary flat blades, not reduced to scales 2. H\)pericum 



3. Leaves scale-like or subulate 3. Sarolhra 



1. Petals pink or greenish purple; sepals 5; leaves oval 4. Triadenum 



1. ASCYRUM L. 



A. multicaule Michx. Thickets, s. 111. July-Aug. [_A. crux-andrae and A. 

 hypericoides of auth., not L.j St. Andrew's Cross. 



2. Hypericum L. — St. John's-wort 



1. Stamens numerous (15-40). 



2. Shrubs, 0.5-1.5 m. tall. 



3. Styles 5; capsules ovoid, 6-9 mm. long; flowers 2-3 cm. broad; sandy 

 soil, local; known from Lake, Cook, and Livingston counties; also 

 in St. Clair and Pope counties. June-Aug. Kalm's St. John's-wort .... 

 H. kalmianum L. 



3. Styles 3; capsules ellipsoid, 11-13 mm. long; flowers 1.5-2 cm. broad; 



moist woods. July-Aug. Shrubby St. John's-wort H. prolificurn L. 



2. Herbs, rarely shrubbly at base. 



4. Petals not at all black-dotted. 



