14d 



ANALYTICAL KEY. 



* * * Shriibs or frees; leaves alternate, entire {except in the last). 



Calyx tubular, bearing the stamens; akene tailed Rosaceae, 49 



Calyx 6-parted, yellowish; leaves aromatic Lauraceas, 106 



Calyx 4-5-cleft, greenish; fruit cherry-like Rhamnaceae, 35 



Calyx 3-4-cleft, yellowish; stamens 6-8 ThymeiacesB, 107 



Calyx o-cleft, bright yellow; stamens 5, united Sterculiaceae, 20 



* * * * Trees ; leaves opposite, pinnate. 



Fruit a slender samara Oleaceae, 73 



Fniit a double samara Sapindaceae, 37 



CLASS II.— ENDOGENS OR MONOCOTYLEDONS. 



A, Perianth adherent to the ovary (ovary inferior) . 



Flowers irregular. Anthers 1 or 2 on the pistil. . . ; Orchidaceae, 108 



Flowers regular. Stamens 3, anthers extrorse Iridaceae, 110 



S. Perianth free (ovary superior). 



Flowers in whorls. Carpels 8 to many , Alismaceae, 108 



Pistil 3-celled; stamens 3 to 6 Liliaceae, 1 10 



Flowers greenish in a spikn , Triglochin in Alismaceae, 108 



Perianth 4-parted; stamens 4. Stem 2-3-ieaved Maiantliemwm, 115 



