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 MONOCOTYLEDONEAE-EPIGYNAE. Peri- 
anth and stamens arising above the 
carpels; carpels inferior. 
’ Order HypratEs, with one family, 32, Hydrocharitaceae. 
Order InmpALEs. 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, 
