PLATE 
Fia. 
ILLUSTRATIONS. 
PLATES. 
Facing page. 
XX. Beaucarnea goldmanii Rose............2-2.---------------- 
XXI. Pilostyles thurbert A. Gray.....---.--2----------.---- +--+: 
XXII. Mozinna pauciflora Rose.....------.----------------------- 
XXIII. Echinocactus palinert Rose.......-.---------------+-----+--- 
XXIV. Opuntia azurea Rose......-...---.---------------- lowe nenee 
XXV. Opuntia lloydii Rose. ..... cece ee eee eee eee eee eee ee eee eee 
XXVI. Opuntia pyriformis Rose. ..........-...-.------------------ 
XXVIL. Opuntia vilis Rose.........2...---..------ 2-02 eee eee eee eee 
TEXT FIGURES. 
. Flowers of Pilostyles covillei.......2.2.-.-------------------------- 
. Flowers of Pilostyles glomerata.........---.----------------+-------- 
. Flowers of Pilostyles palmeri..........-.-------------------------- 
. Flowers of Pilostyles sessilis.......--------------------------------- 
Jalyx of Cracca diversifolia......----....-.-----.------------------ 
. Calyx of Cracca platyphylla........------- eee eee eee eee eee ee ee eee 
}. Leaflet and fruit of Morkillia mexvicana......2....-2.-.------------- 
. Leaflet and fruit of Morkillia acuminata.............----.-.--------- 
. Flower and petal of Cuphea goldmani........---------------------- 
. Flower of Cuphea imberbis .....2..-------------------------------- 
. Flower and sepal of Cuphea lozanii .........---.------------------- 
. Flower and ovary of Cuphea painteri.......--...------------------- 
. Flower of Cuphea viscosa......-.---------------- +--+ +--+ +--+ ------ 
. Fruit of Opuntia azurea....-.-.22--------------------------------- 
. Fruit of Opuntia loydit ......2...--.---.-------------------------- 
. Fruit of Opuntia pyriformis.........--.--------.------------------- 
. Fruit of Opuntia vilis .......-.-.----------------------- +--+ +--+ --- 
. Flower and fruit of Pelozia clavata.......-.-.---------------------- 
. Flower of Pelozia laciniata......---..-.----------.---------------- 
. Flower and flower parts of Jehlia macrophulla ........-.------------ 
. Flower and flower parts of Lopezia elegans .........---.------------ 
. Flower and flower parts of Lopezia glandulosa ........-------------- 
. Flower and sterile stamen of Lopezia o@xacana .....---.------------ 
. Flower and flower parts of Lopezia palmeri........----.------------ 
. Flower and flower parts of Lopezia parvula.......------------------ 
5. Flower and petal of Lopezia pringlei ........-------------------+--- 
. Flower and stamen of Lopezia smithtt .........--------------------- 
. Flower and stamen of Lopezia stricta...........---.---------------- 
. Flower of Lopezia violacea.....-...---------------- 2-0 ee eee ee eee 
261 
