TRANSACTIONS OF WAGNER 
m VEGETATION OF SOUTH FLORIDA 
and abundance in the forest, where it hangs down in dense, dark-green masses 
from the branches of the trees above, that it promises to be an important 
rubber-yielding species. In one place, where the railroad passes through the 
forest, Amphistelma is so abundant as to bear down, or choke, the trees on 
which it grows as a slender vine. 
The secondary growth of small trees and shrubs fills up the light space 
and intervals beneath the dense canopy of lianes and branching trees of 
the upper story. An oak, Quercus myrtifolia Willd., grows to be 6 meters 
tall and is a constituent of the undergrowth. It is associated with an- 
other small tree of the same height, Trema floridana Britt., with yellow 
or orange drupes. A small tree of northern South America, Talisia pedi- 
cellaris Radlk., was discovered by the writer in Brickell Hammock, as new 
to Florida. It is included in Small's Miami Flora (p. 115) as a mem- 
ber of the family Sapindaceae. The coral-bean, Erythrina arborea 
(Chapm.) Small, with pods containing scarlet seeds, is a shrub 3-8 meters 
tall and has deltoid to hastate leaflets and few-flowered racemes. The 
writer was especially struck with this shrub as an important element of 
the forest. A euphorbiaceous shrub, found also in the Florida keys, the 
Bahamas and Cuba, grows in Brickell Hammock. It is Drypetes 
lateriflora (Sw.) Krug & Urb. The dahoon, or yaupon, Ilex cassine L., with 
red drupes, is a shrub, or small tree, with pubescent twigs. A number of 
other shrubs, or small trees, are present in this forest, such as: lance- 
wood, Ocotea Catesbyana (Michx.) Sarg., Geiger-tree, Sebesten (Cordia) 
sebestena (L.) Britton, fiddlewood, Citharexylum fruticosum L., and 
princewood, Exostema caribeum (Jacq. R. & S. 'Two shrubs, or small 
trees, considered out of their systematic sequence, are common and showy 
plants of the high hammock, viz., white-stopper, Eugenia axillaris (Sw.) 
Willd., with elliptic leaves and black, spheroidal fruits and French-mulberry, 
Callicarpa americana L. with serrate, rough leaves and clustered fruits which 
are violet to magenta in color. Its common occurrence in the south in rich 
woods is perhaps due to birds. 'The remaining shrubs collected by me in 
Brickell Hammock belong to the family Rubiaceæ. They are Hamelia erecta 
Jacq., rough velvet-seed, Guettarda scabra Vent., snowberry, Chiococca and 
two species of wild coffee, Psychotria undata Jacq. and Р. Sulzneri Small. If 
we consider Morinda roioc L. to be a shrub and not a vine, it should be included 
as one of the rubiaceous shrubby constituents of the forest (Plate V, Fig. 2). 
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