39 



1. Sida. 



2. AhuHlon. 



3. TJrena. 



4. 

 5. 



Hibiscus. 

 Thespesia. 



folded or crumpled. — Distrib, Abundant in warm regions, common in 

 temperate, absent from arctic. Genera 57 ; known species about 700. 



A. Staminal tube entire, or but slightly divided at the apex. 

 Tribe I. Malveoe. Herbs or shrubs. Bipe carpels separating from the 



axis. Styles as many as the carpels. 

 Ovules solitary ; carpels with convergent, often 



beaked, apices 

 Ovules 2 or more ; carpels with divergent, not 

 beaked, apices 

 Tribe II. Ureneoe. Styles or stigmatic branches twice 

 as many as the carpels. 

 Fruit of indehiscent cocci 

 Tribe III. Hibiscece. Herbs or shrubs, i^rm'i cap- 

 sular. Sepals leafy. Staniinal-tube truncate 

 or 5-toothed at the apex. 

 Calyx toothed : stigmas distinct, spreading 

 ,, truncate : stigmas united 



B. Staminal tube short or divided into single 



filaments to its base. 

 Tribe IV. Bombaciae. Trees. Sepals leathery : 

 styles connate or free. Fruit capsular. 

 Leaves digitately compound, calyx truncate or 

 irregularly 3 to 6-lobed ; seed silky outside. 

 Anthers solitary ... ... 



„ in groups of 2 or 3 

 Leaves simple, usually scaly ; fruit woody, mui-i- 

 cate ; seeds arillate. 

 Calyx tubular or bell-shaped. 



Anthers linear, cells sinuous 

 Anthers globose, opening by a pore 

 Calyx dilated at the base. 

 Calyx finally forming a cushion-shaped annii- 



lUS ■•• ••• ••• ••• 



Calyx 5-pouched at the base, petals inserted 

 on the calyx 



6. Bomhax. 



7. JEriodendron. 



8. 

 9. 



Durio. 

 Bosch ia. 



10, Neesia. 



11. Coslostegia. 



1. Sida, Linn. 



Herbs or undershrubs. Leaves entire or lobed. Bracteoles 0. 

 Calyx of 5 valvate sepals, tubular below. Corolla of 5 petals, free above, 

 connate below and adnate to the tube of tlie stamens. Staminal- tube 

 dividinty at the summit into nuujerous anther-bearing filaments. Carpels 

 5 or more, whorled ; styles as many as the carpels, stigmas terminal. 



148 



