KEY TO THE FAMILIES 
25 
Flowers in the axils of dry chaffy bracts, arranged in spikes or spikelets. 
Stems mostly terete, hollow; leaves in 2 rows; sheaths mostly split 
opposite the blade. Gramineae, p. 186. 
Stems mostly triangular, solid; leaves in 3 rows; sheaths entire. 
Cyperaceae, p. 184. 
B. Perianth present, in 2 series, often corolla-like. 
Ovaries several, distinct, becoming achenes; perianth of 3 sepals and 3 
petals... Alismaceae, p. 171. 
Ovary 1 and 
Superior. 
Perianth-segments green or brown, not petal-like; flowers small 
or minute; rush-like plants. Juncaceae, p. 182. 
Perianth-segments petal-like, at least the inner; flowers mostly 
showy; plants not rush-like. Liliaceae, p. 173. 
Inferior. 
Perianth regular. 
Stamens 6; leaves (in ours) fleshy, in a basal rosette. 
Amaryllidaceae, p. 181. 
Stamens 3; leaves 2-ranked, sword-like and sheathing. 
Iridaceae, p. 181. 
Perianth irregular; stamens 1, rarely 2...0rchidaceae, p. 206. 
Circle of cones of Monterey 
Pine (Pinus radiata Don). See 
p. 27. 
