were never again collected. They should not have been 

 named. These poorly known, inadequately described 

 species listed below probably should be excluded, rather 

 than classed as extinct. 



552. Calyptranthes kiaerskovii Krug & Urban. The 

 only endemic tree of Tortola, named in 1895 from a 

 sterile specimen. Possibly an accidental migrant of a 

 widespread species. 



563. Eugenia boqueronensis Britton. Named in 1924 

 from a specimen without fruit collected by its author and 

 others at Salinas de Boqueron in 1915. 



567. Eugenia (?) corozalensis Britton. Published in 

 1924 for a sterile specimen collected the year before at 

 Corozal. 



576. Eugenia serrasuela Krug & Urban, serrazuela. 

 Reported from Anones by Bello before 1881 and named 

 in 1895. 



The 2 rare nonendemic tree species listed below may be 

 extinct locally. 



300. Urera caracasana (Jacq.) Gaud., ortiga colorada, 

 stinging nettle, Urticaceae, nettle family. This widespread 

 tropical American species was collected long ago in Lu- 

 quillo Mountains, where it may possibly be extinct. Ap- 

 parently it is the ancestor of the Puerto Rican endemic, 

 Urera chlorocarpa Urban. Thus, instead of disappearing, 

 the plants evolved into a different species. 



447. Ottoschulzia rhodoxylon (Urban) Urban, 

 Icacinaceae, icacina family. A very rare tree named in 

 1908 from a specimen without flowers or fruit collected 

 near Mayaguez in 1876. Not seen in Puerto Rico in recent 

 years but located in Hispaniola as a range extension. 



The next 3 examples illustrate rediscovery of lost tree 

 species. 



449. Sapium caribaeum Urban, Euphorbiaceae, 

 spurge family. Collected at Cinnamon Bay, St. John, 

 about a century ago but not found there afterwards. 

 Sterile specimens were obtained on Sage Mountain, Tor- 

 tola (British Virgin Islands), in 1954 and 1972 by Little. 

 Also Lesser Antilles to St. Vincent. 



285. Juglans jamaicensis C. DC, nogal, West Indian 

 walnut, Juglandaceae, walnut family. Collected in Puer- 

 to Rico recently by Woodbury for the first time since 

 1915. Native also in Cuba and Hispaniola but not 

 Jamaica. 



268. Pseudophoenix sargentii H. Wendl., Florida 

 cherrypalm, Palmae, palm family. One small tree was 

 found on Mona Island west of Puerto Rico in 1970 by 

 Woodbury, who located 3 others there later. All have 

 since been cut. The range including varieties extends from 

 Hispaniola to Cuba, Bahamas, Upper Florida Keys, 

 Mexico, Belize, and Dominica. Additional trees were 

 found on Mona in 1979. 



2. Rare Endemic Species Needing Additional 

 Protection 



Several endemic tree species apparently need additional 

 protection because they are very rare and limited in area 

 and because they grow mostly on privately owned lands 

 subject to other uses and destruction of the habitat. The 

 13 species listed below have been proposed also as en- 

 dangered (7). Five are recorded from public forests, while 

 3 are absent from Puerto Rico. The 4 poorly known, 

 inadequately described species of Myrtaceae mentioned 

 above could be added here, if ever found again. 



459. Hex cookii Britton & Wils., Aquifoliaceae, holly 

 family. Rare shrub or small tree local in dwarf forest at 

 and near summit of Cerro de Punta, in the central moun- 

 tains at 4,000-4,390 ft (1,219-1338 m) altitude. Toro 

 Negro Forest. 



702. Crescentia portoricensis Britton, Bignoniaceae, 

 bignonia family. Vinelike shrub or sometimes small tree 

 rare in lower Cordillera forest at 800-2,500 ft (244-762 

 m) altitude in foothills of southwestern Puerto Rico. 

 Maricao and Susua Forests. 



454. Buxus vahlii Baill., Buxaceae, box family. Rare 

 shrub or small tree in moist limestone forest at 200-500 ft 

 (61-152 m) altitude on hills of Puerto Rico. One colony is 

 being destroyed. Collected near Rincon, Ponce, and 

 Bayamon. Also St. Croix. 



524. Banara vanderbiltii Urban, Flacourtiaceae, 

 flacourtia family. A very rare shrub or small tree now 

 known from only 2 small trees on a farm near Bayamon. 

 The fruits have not been described. Moist limestone 

 forest at about 300 ft (91 m) altitude in Puerto Rico. First 

 found near Catano in 1899 and near Martin Pena. 

 Named in 1902. 



425. Malpighia pallens Small, stingingbush, 

 Malpighiaceae, malpighia family. A shrub or small tree 

 confined to St. Croix and Buck Island, though reported 

 also from Cuba. Public park — Buck Island Reef National 

 Monument. 



498. Sida eggersii E. G. Baker, Malvaceae, mallow 

 family. Britton and Wilson (2, 5: 555) called this "one of 

 the most interesting species of our Flora." This small or 

 medium-sized tree was named in 1892 for the collector, 

 who found it in Tortola (British Virgin Islands). After- 

 wards, this species was collected twice on Culebra by N. 

 L. Britton and W. M. Wheeler in 1906 and by J. A. 

 Shafer in 1913. Apparently, it may be extinct on that 

 small island east of Puerto Rico. One tree was discovered 

 on Jost Van Dyke (British Virgin Islands) in 1967 by Lit- 

 tle (<5). In 1975, Woodbury and others found a large 

 number of the trees on Tortola. 



416. Trichilia triacantha Urban, Meliaceae, mahogany 

 family. Rare shrub or small tree near Guanica and 

 Penuelas in dry limestone forest at 100-200 ft (30-61 m) 

 altitude in southwestern Puerto Rico. Guanica Forest. 



