Frontispiece, 
ILLUSTRATIONS, 
PLATES. 
Facing page 
Porto Rico Royal Palm (Roysionea boringuena). 
) ! fi 
Prats [. Malvaviseus lanceolatus.............--.------------ a | 
Il. Neotreleasea brevifolia............-.-.--------- +--+ +--+: 6 
ILL. Potentilla madrensis.......000.00.--22-0 002000222 e ee ee eee 30 
[V. Potentilla rydbergiana......-.........02-.-.---------------- 30 
V. Cologania capitata...... 0.0.0... 2-20-0222 4] 
VI. Crotalaria viminalis......000.00-----0002-02-2--+----- — 17 
VIL. Indigofera platycarpa..........-.----- +++ +--+ 222222 eee 47 
VILL. Lupinus submontanius......0.-.------- 2220222 e ee eee eee A7 
IX. Phaseolus oavacanus..........2.2-2-.2--2-222202-222 2002 2- 48 
X. Phaseolus pedatus.........--..2.-22 2-0-0022 002eeeeeeee 48 
XI. Colubrina meqacarpa.............2----+----------------- 48 
XI. Saurauja pringlei............---2-2-5--5------- +--+ -5---- 48 
XILL. Porto Rico Royal Palm (Roystonea borinquena), At Juana 
Diaz. ......2.2.0.-------2-2--2 20222 Frontispiece, 
XIV. Okra (Abelmoschus esculentus) showing healthy and dis- 
eased fruits. From Santurce............---.---------- 63 
XV. Acacia amarilla ( Albtzzta lebbek). Near Juana Diaz... ... 70 
XVI. Alpinia nutans. Near Caguas........-------+---+------ 73 
XVIL. Anthurium acaule. Military road near Aibonito.......-. 82 
XVIII. Antigonon leptopus. Coamo Springs.........----------- 82 
XIX. Flamboyant blanco (Bauhinia kappleri). Coamo Springs. 90 
XX. Ucar tree (Bucida buceras), Coamo Springs.......-.-.--- 96 
XXI. Almacigo (Bursera simaruba). Near Coamo Springs... - 97 
XXII. Algodon de seda (Calotropis procera). Road near Guayama — 101 
XXIII. Palo de burro ( Capparis cynophallophora), fruit and leaves. 
Near Coamo Springs .......----.-.-------------++-+-- 104 
XXIV. Ceiba tree (Ceiba pentandra). Near Ponce......---------- 11] 
XXV. Stem and edible fruit of Cereus sp. At Guayama....... 112 
XXVI. Icaco (Chrysobalanus icaco), Rio Piedras .....-..------- 114 
XXVIL. Péndulo colorado ( Citharerylum quadrangulare). Road be- 
" tween Ponce and Adjuntas................------------ 116 
XXVIII. Cupey (Clusia rosea). Near Yauco.........-.----------- 119 
XXLX. Job’s tears (Coir lachryma-jobi). Near Rio Piedras... -- 122 
XXX. Moral tree (Cordia macrophylla). Coamo Springs ......--- 127 
NXNI. Cerezas (Cordia nitida), Ponce ......2.0...--------+---- 127 
XXNIL. Calabash tree (Crescentia cujete). San Anton near Rio 
Piedras. . 0.0.02. 2.22 02-22 eee eee ee ee ee eee eee ee 129 
XXNIITT. Concombre (Cucumis anguria). Coamo Springs ......---- 130 
XXXIV. Virgin forest of tabonuco (Dacryodes hecandra). At Isolina 182 
XXXV. Jaguey (Ficus lentiginosa). Road between Ponce and Ad- 
> juntas... 2222222222 ee eee eee ee 145 
XI 
