RUTACE^E 



637 



spring of the following year; mature carpels obliquely obovoid, short-stalked, 1-seeded, pale 

 chestnut-brown at maturity, about ' long, faintly marked by minute glands. 



A round-headed tree, 30-35 high, with a trunk 12'-18' in diameter, and stout brittle 

 branchlets coated at first with thick silky pubescence, becoming light gray, rugose, con- 

 spicuously marked by large triangular leaf-scars, and puberulous during their second and 

 third years. Winter-buds narrow-acuminate, \' long, coated with short thick pale tomen- 

 tum. Bark of the trunk \' thick, with a smooth light gray surface divided by shallow fur- 

 rows and broken into numerous short appressed scales. Wood very heavy, exceedingly 

 hard, brittle, not strong, light orange-colored, with thin rather lighter colored sapwood; 

 occasionally used in southern Florida in the manufacture of furniture, for the handles of 

 tools, and other objects of domestic use. 



Distribution. Florida, on the Marquesas Keys and on South Bahia Honda and Boca 

 Chica Keys; on Bermuda, the Bahama Islands, San Domingo, and Porto Rico. 



4*. Xanthoxylum coriaceum A. Richard. 

 Fagara coriacea Kr. & Urb. 



Leaves equally pinnate, persistent, 2'-3' long, with a stout grooved petiole, and 6-8 ob- 

 long-obovate stalked coriaceous dark yellow-green lustrous leaflets rounded or rarely emar- 

 ginate at apex, I'-l-J' long and f'-f wide, with much-thickened revolute entire margins, 



Fig. 580 



a stout midrib, slender obscure spreading primary veins, and reticulate veinlets. Flowers 

 yellow, appearing in March on short stout pedicels, in densely flowered terminal cymes; 

 sepals 3, minute, united below, free above, much shorter than the 3 oval or obovate petals 

 rounded at apex; stamens 3; filaments about as long as the petals; anthers ovoid or oval; 

 ovary 3-celled, globose-ovoid; styles thick, 3 (teste Urban). Fruit: mature fruit not seen. 



A glabrous tree, sometimes 18-20 high, with a slender stem, and stout red-brown 

 branches unarmed in Florida specimens, or in the West Indies furnished with short re- 

 curved spines; more often shrubby. 



Distribution. Florida, shores of Bay Biscayne and near Fort Lauderdale, Dade County; 

 rare; on the Bahama Islands and in Cuba. 



2. HELIETTA Tul. 



Trees or shrubs, with slender terete branchlets. Leaves opposite, long-petiolate, tri- 

 foliolate, persistent; leaflets sessile, obovate-oblong, obtuse, entire orcrenate, subcoriaceous, 



