niWEM, (IRIS FAMILY.^ 



7(37 



1. IRI^, L. Flower-de-Luce. Iris. JSusan. 



Perigcwiium tubular at base, regular, 6-cleft; the outer 3 divisions 

 spreading or reflexed ; the inner 3 generally erect. Stamens 3, dis- 

 tinct, inserted at the base of the outer divisions of the perigonium, 

 the anthers extrorse, under the petaloid stigmas. Pod 3-celled; ovules 

 numerous, implanted in central placenr?e — Perennial herbs, with creep- 

 ing or tuberous root-stocks, sword-shaped, or grassy leaves, and large 

 showy flowers. 



Fic4. 357. 



(ft) Plant of the genus Iris, sliowing the roots, the eqiiitant leaveti, and the flower, {b) 

 Tip of the style, showing the petaloid stigmas, and the stamens below them, with tlieir 

 extrorse anthers, (c) Longitudinal section of the ovary, with two, equitant leaves, (d) 

 Transverse section of the ovary, (c) A seed. (/) A longitudinal section of the same 

 showing the embryo in its fleshy albumen 



* Moot a l)ulb, with ajibrous envelope. 

 t Inner divisions of perigonium erect, nearly as long as outer. 

 I Filaments at loirer jpart monadelplious and united witJi style. 



1 I. Sisyrinchiiuu. 



I \ Filaments free. 



2 I. histrio. 



t t Inner divisions of 'perigonium sinall, horizontal or dejiexed. Filaments 

 free along tlieir wliole length. 



3 I. Palsestina, 4 fumosa. 



='= ^i' Uoot-stocl: composed of naled, oblique, or creeping tubers and fibres. 



Ovary o-ceHed. 



