360 THE PLANT PHYLA 



(2) Stems mostly solid, often large and 

 tall. 



(a) Spikelets perfect or staminate, 



not separated. 6. Blue-stem 

 Grasses (Andropogoneae) 

 Andropogon. 



(b) Spikelets all unisexual, sepa- 

 rate, monoecious. 6a. Maize 

 Grasses (Maydeae) Zea. 



Sub-Class MONOCOTYLEDONS AE-EPIGYNAE. Peri- 

 anth and stamens arising above the 

 carpels; carpels inferior. 



Order HYDRALES, with one family, 32, Hydrocharitaceae. 

 Order IRIDALES. Compound tricarpellary pistil inferior; 

 whorls of perianth mostly alike and 

 regular. 



Family 33. Amaryllidaceae. Amaryllises. Leaves 

 narrow to broad, the veins longi- 

 tudinal. Amaryllis, Narcissus, Ag- 

 ave, Hypoxis. 



Family 34. Haemodoraceae. 



Family 35. Iridaceae. Irises. Leaves sword-shaped; 

 stamens 3. Iris, Crocus, Sisyrinch- 

 ium, Gladiolus. 



Family 36. Velloziaceae; 37, Taccaceae; 38, Dio- 

 scoreaceae. 



Family 39. Bromeliaceae. Leaves mostly rosulate 

 elongated and pointed. Tillandsia, 

 Ananas. 



Family 40. Musaceae. Bananas. Large herbs, 

 often tree-like. Musa, Strelitzia. 



Family 41. Zingiberaceae. 



Family 42. Cannaceae. Perennial herbs with pin- 

 nately-veined leaves and irregular 

 flowers. Canna. 



Family 43. Marantaceae. 



Order ORCHIDALES. Compound tricarpellary pistil in- 

 ferior; perianth irregular. 



Family 44. Burmanniaceae. 



Family 45. Orchidaceae. Orchids. Flowers irregular, 



