222 ARECACEAE 
diameter, yellowish green and lustrous above, silvery white beneath, the segments numer- 
ous ; ligules orange, about 18 mm. long, long-pointed ; petioles 12-14 dm. long, 18 mm. 
broad at the apex to 5-7 cm. broad at the base: spadix about 1 m. long ; branches ivory- 
white becoming yellow-green or orange in age: pedicels about 3 mm. long, slender: 
flowers pungent-aromatic : perianth ivory-white: drupes spheroidal, 6-9 mm. in diameter : 
seeds chestnut-brown, lustrous, the basal cavity extending nearly to the apex. 
On sandy shores and coral ridges, southern peninsular Florida and the Keys. 
2. Thrinax microcárpa Sarg. A tree sometimes 10 m. tall, with a maximum trunk 
diameter of about 2.5 dm. Leaves ample; blades suborbicular, 1 m. broad, or smaller, 
pale green above, silvery white beneath, more or less tomentose when young, the segments 
longer than the body ; ligules suborbicular, 2-2.5 cm. broad, concave ; petioles 10-15 mm. 
broad near the apex: spadix relatively slender, 3-6 dm. long ; branches curved upward 
above the middle: perianth white, jointed to a disk-like pedicel, about 3 mm. long, with 
6 low broad lobes: filaments triangular, exserted : drupessubglobose, 3-4 mm. in diameter, 
white: seeds depressed. 
In dry coral soil, southern peninsular Florida and the Keys. 
3. Thrinax Keyénsis Sarg. A tree with a trunk about 8 m. tall and 2.5-3 dm. in 
diameter raised on a base of matted roots sometimes about 1 m. high. Leaves ample ; 
blades rather longer than broad, about 1 m. in diameter, lustrous and yellowish green 
above, bluish green and more or less densely pubescent with silvery white hairs beneath, 
the segments numerous, longer than the body ; ligules acute, about 2.5 em. long ; petioles 
stout, about as long as the blades, 2.5 cm. broad at the apex, about 10 cm. broad near the 
base: spadix nearly 2 m. long, incurved ; branches orange : pedicels very short, disk-like : 
flowers faintly aromatic: perianth ivory-white: drupes subglobose, 5-6 mm. in diameter, 
the flesh thin: seeds chestnut-brown, the basal cavity extending only to the middle. 
In sandy soil, Florida Keys. 
2. COCCOTHRINAX Sarg. 
Shrubs or trees, with very short or elongated stems and unarmed foliage. Leaves ap- 
proximate: blades plaited, suborbicular, or truncate at the base, pale or silvery white be- 
neath, rather thin, more or less deeply parted: ligule free, concave: petioles flattened. 
Spadices shorter than the petioles, paniculately branched. Spathes papery, 2-cleft. 
Flowers perfect, slender-pedicelled. Perianth cup-like, obscurely 6-lobed, deciduous. 
Stamens 9: filaments subulate, nearly distinct. Ovary 1-celled: stigma funnelform. 
Ovule solitary, anatropous. Drupe subglobose, raised on the thickened receptacle. Seed 
erect, depressed. Endosperm channeled. Embryo lateral. The plants flower chiefly in 
_the spring. 
Plants stemless or nearly so: leaf-blades 2-3 dm. broad: drupes 7-9 mm. in diameter. 1. C. Garberi. 
Plants with upright trunks 4-8 m. tall: leaf-blades 4-6 dm. broad: drupes 12-18 mm. in 
diameter. 2. C. jucunda. 
1. Coccothrinax Gárberi (Chapm.) Sarg. A shrub with a very short stem or none. 
Leaves erect or spreading ; blades suborbicular, rather broader than long, 2-3 dm. in 
diameter, yellowish green and lustrous above, pale or whitish beneath, the segments many 
times longer than the body ; ligules rounded, 5-8 mm. long ; petioles as long as the blades 
or shorter: spadix erect or ascending, 2-4 dm. long, with slender branches: pedicels 1-3 
mm. long: perianth whitish : drupes subglobose, 7-9 mm. in diameter, deep purple: seeds 
brownish. [ Thrinax Garberi Chapm. ] 
On dry coral ridges along Biscayne Bay, Florida. : 
2. Coccothrinax juctinda Sarg. An unarmed tree reaching a height of 4-8 m. and 
a maximum trunk diameter of about 15 cm. Leaves numerous; blades rather longer than 
broad, 4-6 dm. broad, thinnish, yellow-green and lustrous above, silvery white beneath, 
the segments longer than the body ; ligules orange, crescent-shaped, 16-20 mm. broad ; 
petioles slender, early drooping, rather longer than the blades: spadix about as long as 
the leaf-blades: peduncles flattened : spathes brittle, reddish brown : pedicels rigid, spread- 
ing, about 3 mm. long: perianth white : drupe subglobose, 12-18 mm. in diameter, violet 
or nearly black at maturity, lustrous, edible: seeds tawny brown. [Thrinax argentea 
Chapm., not R. & S.] 
On dry coral ridges, southern peninsular Florida and the Keys. 
3. SABAL Adans. 
Unarmed plants with subterranean, creeping or erect stems. Leaves ample : blades fan- 
shaped, cordate or narrowed at the base, many-cleft, the segments 2-cleft at the apex, often 
