SAXIFBAGACE2E. 425 



imbricate and petals 4, 5, imbricate (or 0), inserted in throat. 

 Stamens 8-10, 2-seriate, inserted with perianth; anthers introrse, 

 sub-2-dymous. Grermen inserted in concavity of receptacle, partly 

 inferior ; carpels 2, 3, inside free or more or less highly connate, 

 terminating above in subulate styles truncate or capitellate at stig- 

 matose apex ; ovules go 5 inserted in central angle. Capsule 3-lobed, 

 or carpels 3 folliculate, ventrally dehiscent. Seeds go , scobiform ; 

 testa laxly membranous, produced at both ends; albumen fleshy, 

 sometimes copious. — Tall herbs ; rhizome perennial ; branches annual, 

 simple or branching ; leaves alternate, 2- or 3-nate, ternately decom- 

 pound, or palmate or peltate- 5 -sect {Rodger sia) ; petiole dilated at 

 base ; stipules membranous adnate to petiole ; flowers (small) in very 

 branching cymiferous terminal racemes ; cymes sometimes 1 -parous, 

 scorpioid ; flowers sometimes (Rodgersia) subsessile (Central Tern- 

 perate Asia, the East, Japan, Java, North America.) See p. 330. 



12. Lepuropetalum DC. — Flowers hermaphrodite or polygamous 

 minute ; receptacle subcampanulate ; sepals 5, ovate. Petals as many 

 inserted in throat, included. Stamens 5, alternate and perigynously 

 inserted with petals, included. Germen half-superior, 1 -celled; 

 placentas 2, 3, parietal, go -ovulate, opposite the carpels ; styles as 

 many, short, capitate at stigmatose apex. Capsule small half- superior 

 included membranous, at apex loculicidal, 2, 3-valved ; seeds go , 

 oblong subrugose. — An annual (very small) glabrous herb, sprinkled 

 with deep-brown glands ; leaves alternate spathulate entire exsti- 

 pulate ; flowers terminal solitary pedunculate (Chili, North America). 

 See p. 331 . 



13. Leptarrhena R. Br. — Receptacle subcampanulate; sepals 5, 

 and petals as many alternate spathulate, inserted in mouth. Stamens 

 10, 2-seriate, perigynously inserted with petals ; filaments subulate ; 

 anthers 1- celled, 2-valved. Carpels 2, scarcely cohering at base and 

 inserted in bottom of receptacle, terminating in short styles stigma- 

 tose at simple apex ; ovules go , inserted on subbasilar placentas, 

 ascending. Carpels when mature erect-beaked coriaceous, dehiscent 

 within ; seeds go , basilar scobiform ; testa membranous much pro- 

 duced at both ends ; nucleus minute. — A herb ; root slender, 

 1-3 -headed ; leaves petiolate persistent obovate serrate ; petiole 



