Antillean Region: Cuban—Jamaican District. 677 
Ochroma lagopus, Paritium elatum (= Hibiscus elatus), Rheedia aristata (rare), Calophyllum 
calaba, Bocagea laurifolia, Genipa americana, Guarea trichilioides, Styrax obtusifolium, Chryso- 
phyllum glabrum. 
B. Jamaican District. 
Owing to the topographic configuration of this island with elevated moun- 
tains, plateaus, valleys, rivers and plains the flora although tropic in character 
is of the most varied constitution. The prevailing tropic vegetation of Jamaica 
is distinctly related to that of the Central and South American mainland, as 
is shown in the great profusion and variety of Melastomaceae, Myrtaceae 
and Cinchonaceae and the total absence of Cupuliferae and Abietineae. 
Although the flora is well known, botanically speaking, no authoritative syste- 
matic work has ever been published and there is no satisfactory phytogeo- 
graphic sketch extant. This the present sketch in part attempts to supply. 
The Mangrove Formation exists in-a considerable number of localities 
along the coast line of Jamaica notably according to my observations in 
Kingston Bay, Montego Bay and the harbor of Port Antonio. Its constitution 
is similar to that in other parts of the tropices. At the marshy edges of a 
mangrove swamp, I found Mariscus rufus and Fimbristylis spadicea. — The 
constitution of the Dune Formation is essentially similar to that on other 
tropic sand dunes. /pomoea pes-caprae according to my observations is the 
character plant of low beaches. Recently BRITTON has discovered on the 
dunes west of Black River, a tall palm (7%rinax) known locally as bay thatch 
or pimento. 
The Sea Cliff Formation exists along the entire coast line of Jamaica, 
except where broken by reentrant bays, or by sandy beaches. 
According to my observations?), the rocks near Port Antonio, projecting over the sea and 
in storms wet by the spray (that is, tossed up from beneath), support WERNER EN ne 
uvifera, Ruellia tuberosa, Crotalaria incana and Plumeria sp. Hanging over the rocks and Iying 
i i the 
ocean cliffs at Runaway Bay grows 
is formation is well repre- 
1,600 feet altitude. This being a region of low rainfall the cacti form extensive groves and the 
plants are adapted to dry conditions notably the rare, wand-like shrub Lasiocroton macro- 
phylius. In the woods of the Santa Cruz Mountains Dr. Brrrron collected Bauhinia porrecta 
and the rare Peltostigma of the rue family. The rocky woods at Negril Point yielded many FAT 
species, including the “wild sago” (Zamia) and the fine spider lily (Hymenocallis) 
Savanna and Chaparral-Formation. In all probability this formation was 
a prominent one in the southwestern part of the island before the land 2. 
devoted to agriculture and grazing. Much of the best pasture land z er 
in the St. Catherine, Clarendon, Manchester and St. Elizabeth parst@® A. 
presumably the ancient grassy savannas were early devoted to the rearıng © 
T—— 
1) HARSHBERGER, JoHn W.: Strand Flora of Great Inagua etc.: See Bibliogr. p- 89- 
