8AXIFBAQA0E2E. 423 



5. Heuchera L. — Receptacle campanulate. Sepals 5, 6, some- 

 times unequal, imbricate. Petals 5, 6, or 0, inserted in mouth of 

 receptacle, entire. Stamens inserted and alternate with petah ; 

 filaments short or elongated ; anthers frequently exserted, 2-celled ; 

 dehiscence marginal or introrse. Germen altogether or to a great 

 extent entire, 1 -celled ; styles 2, elongated, stigmatose at apex; 

 placentas 2, parietal co -ovulate. Capsule inferior, apex 2-valved 

 between styles. Seeds go , hispidulous or muricate. — Herbs ; rhizome 

 thick perennial ; branches annual scapiform ; leaves radical broadly 

 cordate or orbiculate, lobate or crenate ; stipules membranous adnate 

 to long petiole ; flowers bracteate, in spikes or simple or branching 

 racemes {Temperate and Frigid North and South America. See 

 p. 828. 



6. Tiarella L. — Receptacle shortly cupulate ; sepals and petals 

 entire 5, inserted at margin. Stamens 10, 2-seriate, inserted with 

 petals ; filaments free elongated ; anthers 2-celled introrse. Germen 

 free, inserted in bottom of receptacle, 2-fid at apex ; lobes open, soon 

 unequal, with few seeds at base, terminating in slender styles ; 

 placentas 2, parietal at base of cell, oo -ovulate. Capsule mem- 

 branous free, 1-celled, broadly 2-valved at apex between styles ; 

 valves folliculiform gaping, very unequal, few-seeded at base. Seeds 

 albuminous ; testa crustaceous smooth. — Slender herbs ; rhizome 

 perennial ; leaves alternate, simple or 3-foliolate ; stipules small, 

 adnate to long petiole ; flowers in terminal, simple and branching 

 racemes (Temperate North America, Himalaya). See p. 328. 



7. Boykinia Nutt. — Receptacle suburceolate very concave, adnate 

 to ovary and slightly produced beyond. Sepals 5, 3-angular, inserted 

 at mouth, valvate. Petals 5, alternate, a little longer, subspathulate, 

 glandular-dilated at insertion. Stamens 5, alternipetalous ; filaments 

 short free; anthers introrse 2-rimose apiculate. Germen inferior, 

 2- or more rarely 3-celled ; styles 2, or 3, short, stigmatose at apex ; 

 ovules co , inserted on axile placenta. Capsule 2, 3-celled ; beaks 2, 

 3, exserted ; dehiscent between styles. Seeds co , minute ovoid ; testa 

 minutely punctate. — Glandular-downy herbs ; rhizome perennial 

 suberect ; most of leaves radical petiolate orbicular, lobate or dentate ; 



