Xll KEY TO THE GENEKA. 



Tribe III. Ixie^. — Flowers spicate,riot fugitive, never more than one 

 to a spatlie. (This tribe is concentrated at the Cape, but 40, 41, 

 42, 4G, 47, 51, 5G, & 57 extend also to the mountains of Tropical 

 Africa, 50 to Socotra, and 5G to tbe Mediterranean region.) 



* Styh-hranclies simple. Perianth refjular. Stamens equilateral. 



39. ScHizosTYLis. — Like Hesijcrajiilia, but rootstock not thick- 

 ened into a corm. 



40. Hespeeantha. — Style short ; branches long, subulate. 

 Spathe-valves green. 



41. Geissoehiza. — Style longer than in the last; branches 

 shorter, subulate. Spathe-valves oblong, green or brownish upwards. 



42. DiEEAMA. — Style long, with short clavate branches. Spathe- 

 valves large, entirely membranous. Leaves long, rigid. 



43. Steeptantheba. — Style long, with short clavate branches. 

 Spathe-valves membranous. Leaves short, lanceolate. 



44. IxiA. — Style long, with short subulate branches. Outer 

 spathe-valve short, emarginate, membranous or chartaceous. 



** Stijle-branches bifid. Strnncns unilateral. 



45. Feeesia. — Perianth-tube broadly funnel-shaped, with sta- 

 mens inserted below the throat. Spathe-valves small, green. 



4G. Lapeyeousia. — Perianth-tube slender, with stamens inserted 

 at the throat. Ovules many, superposed. 



47. Watsonia. — Perianth-tube broadly funnel-shaped above the 

 middle, where the stamens are inserted. Spathe-valves moderately 

 large, rigid. 



48. Micean'thus. — Perianth-tube cylindrical, with stamens 

 mserted at the throat. Ovules 2, erect, collateral. 



*** Style-branches simple. Stamens unilateral and arcuate. 



49. Babiaxa. — Differs from the following genera by its very 

 plicate hairy leaves. Perianth-limb regular or irregular. 



* Periantli-limb snbreyidar. 



50. Acidantheea. — Spathe-valves large, green, lanceolate. 

 Perianth-tube subcylindrical, usually very loirg. 



51. Ceocossia. — Spathe-valves short, oblong. Perianth-tube 

 subcylindrical. Capsule inflated, deeply 3-lobed. 



52. Melasph.eeula. — Perianth small, without arry tube ; seg- 

 ments very acuminate. 



53. Teitoma. — Perianth with a short cylindrical tirbe. Spathe- 

 valves small, oblong ; outer emarginate. 



54. Spaeaxis. — Perianth-tube short, funnel-shaped in the upper 

 half. Spathe-valves scariose, deeply lacerated. 



** Perianth-limb irreyidar. 



55. SvNNOTiA. — Spathe-valves scariose, deeply lacerated. 



5G. Gladiolus. — Spathe-valves large, green, lanceolate. Peri- 

 anth-tube funnel-shaped. 



57. Antholyza. — Spathe-valves oblong-lanceolate. Perianth- 

 tube cylindrical in the lower half, suddenly dilated at the middle. 



