AND THEIR CULTURE. 



215- 



Sub-genus IV. ISOLIRION. 



Perianth, erect, with segments, vvhich are falcate in the extended flower,, 

 but not revolute ; stamens diverging- on all sides from the straight style.. 

 Leaves in whorls — 



20, Philadelphicum ; 21, Medeoloides. 

 Leaves scattered — Style shorter than ovary — 



22, Concolor. 

 Style longer than ovary — 



23, Bidbijerum. ; 24, Croceum ; 25, Bavuricum ; 

 26, Elegans ; 27, Cateshcei. 



Sub-genus V. MART AGON. 



Perianth, cernuous, with the segments very i-e volute ; stamens diverging 

 on all side from the curved style. 

 ^ f American species ; bulbs, annual, bearing rhizomes — 



^ I 28, Canadense ; 29, Pardalimcm ; 30, Stcperhum ; 



"I 31, Lncidum ; 32, lioezlii ; 33, Columbiamim ;. 



^ '• 31', Humholdlii. 



Old-world species — 



o5. Mar tar/on ; SQ, Avenaceum ; 37, Hansoni. 

 f Leaves lanceolate — many nerved — 



Perianth, falcate above the middle — 

 38, MonadeljjJmm, {Szovitzianmn). 

 Perianth, revolute to below the middle — 



29, PolyphyUitm ; 4:0, Ponticum ; 4^1, CarnioUcuvi. 

 Leaves narrowly linear — with one or few nerves — 



Segments of the perianth, from six to twelve lines 

 broad in the middle — 



42, Testaceum. ; 43, LeichtUnii ; 44, Balemanii ;. 

 45, Psendo-tigrinutn ; 4G, Wallacci. 



Segments of the perianth, from tliree to six lines broad 

 in the middle — 



47, Pojnjwnium; 48. Chalcedonicum ; 40, Callosum- 

 I 50, Tenulfolium. 



Note. — The XvlJioIirion gi'oiip (Himalayan Lilies), with tuiiicated bulb.s, stigma cleft 

 into three subulate liooked divisions, are now referred by Mr. Baker to the FritiUarius. 

 See page 184. 



f]n;s. 



