90 FAM. 111. 



united at the base, often subtended by an involucel; petals 

 5, hypogynous, distinct or united; stamens many, mona- 

 delphous, with reniform 1-celled anthers; pistils several, 

 distinct or united; fruit a several-celled capsule, or a col- 

 lection of 1-seeded indehiscent carpels; seeds 1-many. 



1. Calyx without involucel, ------_-__2 



1. Calyx with an involucel, -_-_-_-. -3 



2. Cells of the ovary 3-9 ovuled; — leaves softly pubescent, usually cor- 



date at the base; flowers axillary, petals distinct; carpels 5-30, 

 1-celled; seeds 1-6 in each carpel, - Abutilon, Indian Mallow 



A. Abutilon (Avicennae), Velvet-leaf. Leafblades 1-3 dm. in diameter, and 

 petioles commonly as long as the blades; petals yellow. Waste places. 

 Summer and Fall. 



2. Cells of the ovary 1-ovuled; — leaves pubescent; flowers solitary or 



clustered in the axils, sometimes in a terminal inflorescence; 

 carpels 5-many, 1-celled; mature carpels around an axis. Sum- 

 mer and Fall. ---------- Sida 



S. rhombifolia. Minutely downy or smooth annual, branching; leaves oblan- 

 ceolate to obovate, pubescent beneath; calyx-tube 5-10 ribbed; petals pale 

 yellow, sometimes with a red blotch at the base; carpels 10-12. Waste 

 places. 



S. spinosa. Minutely pubescent annual, simple or much branched; leaves lan- 

 ceolate to ovate, the petioles of the larger ones with a spine at the base; 

 petals pale yellow; carpels about 5. Roadside. 



S. Elliotti. Roughish pubescent to smooth perennial, branched at the base; 

 leaves linear; calyx smooth; petals yellow; carpels 8-12. Sandy soil, 



S. rubromarginata. Minutely downy or smooth perennial; much branched, 

 purple; leaves narrowly obovate to lanceolate, light green with purple mar- 

 gins; calyx angled; petals light orange; carpels 8-10. Sandy soil. 



3. Ovary 5-celled, -----------4 



3. Ovary many-celled, -_--_-____7 



4. Cells 1-ovuled, -------5 



4. Cells 2-many ovuled, ----------8 



5. Stigmas 10, twice the number of carpels, -------6 



5. Stigmas 5, as many as there are carpels; — leaves angularly lobed; in- 



volucels of 7-10 bractlets; flowers pink; capsule 5-angled. In 



marshes near the coast. Spring to Fall. _ - _ Kosteletzkya 



K. Virginica. Leaves pubescent with stellate hairs, or scabrous. 



K. althaeifolia. Leaves velvety-pubescent. 



6. Carpels with barbed awns all over; — shrubby, with pubescent, angled 



or lobed leaves; involucels of 5-7 more or less united bractlets; 

 corolla purplish; carpels arranged around an axis forming a 

 bur-like fruit, ---------- Urena 



U. lobata, Spanish cockleburr. Leaves shallowly 3-5 lobed, whitish and promi- 

 nently veined beneath. Waste places. Spring to Fall. 

 6. Carpels unarmed; — shrubs with alternate, petioled, entire leaves; 

 involucel of 7-12 narrow bractlets; flowers axillary; sepals 5; pet- 

 als 5, each with a lateral auricle; ovary 5-celled; styles 2-parted; 

 ovules solitary; fruit berry-like, ----- Malvaviscus 



