Myrtaceae, Myrtle Family 



553. Calyptranthes luquillensis Alain. Shrub or small 

 tree rare in upper Luquillo forest at 2,000 ft (610 m) 

 altitude. Public forest— Luquillo. First collected in 1939 

 and named in 1963. 



570. Eugenia haematocarpa Alain, uvillo. Small tree 

 rare in lower slopes of Luquillo forest at 1,000-1,500 ft 

 (305-457 m) altitude in Luquillo Mountains, collected at 

 Barrio Maizanales, El Valle, Naguabo, and at El Verde, 

 Rio Grande. Public forest— Luquillo. First collected in 

 1939 and named in 1963. 



589. Marlierea sintenisii Kiaersk., beruquillo. Shrub 

 or small tree rare in dwarf forest at 2,500 ft (762 m) 

 altitude in Luquillo Mountains. Public forest — Luquillo. 

 First collected nearly a century ago and rediscovered in 

 1940. 



586. Myrcia (?) paganii Krug & Urban. Tree very rare 

 in moist limestone forest at 600-800 (183-244 m) altitude 

 in northwestern Puerto Rico. Public forest — Guajataca. 

 Flowers and fruits unknown. First collected nearly a cen- 

 tury ago and rediscovered in 1959 by Woodbury. 



584. Psidium sintenisii (Kiaersk.) Alain, hoja menuda. 

 Small tree rare in upper Luquillo and upper Cordillera 

 forests at 2,500-3,000 ft (762-914 m) altitude in eastern 

 and western mountains of Puerto Rico. Public 

 forests — Carite, Luquillo, Maricao. Perhaps to be united 

 with a widespread related species. 



Polygalaceae, Milkwort Family 



117. Polygala cowellii (Britton) Blake, violeta, violet- 

 tree. Small to medium-sized tree in forests of hillsides and 

 arroyos, mostly in the southern coastal region but scat- 

 tered also through the moist limestone and lower Cor- 

 dillera regions of Puerto Rico. Rare on the limestone hills 

 of the northern coast near Toa Baja, Vega Baja, and 

 Arecibo. Public forest — Guanica. 



Rutaceae, Rue Family 



401. Ravenia urbanii Engler, tortugo prieto. Small 

 tree rare in upper Luquillo and upper Cordillera forest 

 regions at 1,500-3,000 ft. (457-914 m) altitude in eastern 

 Puerto Rico. Public forests — Carite, Luquillo. 



Solanaceae, Nightshade Family 



690. Brunfelsia portoricensis Krug & Urban. Shrub, 

 rarely small tree, rare and very local in lower Luquillo 

 forest at 1,500-1,800 ft (457-549 m) altitude in Luquillo 

 Mountains only. Public forest — Luquillo. 



696. Solatium drymophilum O. E. Schulz, erubia. 

 Very rare shrub or small tree known only from upper Lu- 

 quillo and Cordillera forest of eastern and central moun- 

 tains (Luquillo to Cayey and Adjuntas) in Puerto Rico at 

 middle and high altitudes (2,500 ft, 762 m). Public 

 forests — Carite, Luquillo, Toro Negro. 



Styracaceae, Storax Family 



650. Styrax portoricensis Krug & Urban, palo de 

 jazmin. Medium-sized tree very rare in Luquillo Moun- 

 tains, found at Sierra de Naguabo and Yabucoa and near 

 El Verde, also along Espiritu Santo River in Carite 

 Forest. Public forests — Carite, Luquillo. 



Theaceae, Tea Family 



160. Laplacea portoricensis (Krug & Urban) Dyer, 

 maricao verde. Medium-sized tree found only in the 

 lower Luquillo forest region. Public forest — Luquillo. 



513. Ternstroemia luquillensis Krug & Urban, palo 

 Colorado. Medium-sized tree rare in upper Luquillo 

 forest at about 3,000 ft (914 m) altitude. Public 

 forest — Luquillo. 



516. Ternstroemia subsessilis (Britton) Kobuski. Very 

 rare shrub or small tree in upper Luquillo and upper Cor- 

 dillera forests at 2,500-3,000 ft (762-914 m) altitude near 

 summits of Luquillo Mountains and Monte del Estado. 

 Public forests — Luquillo, Maricao. 



V«vbenaceae, Verbena Family 



679. Callicarpa ampla Schauer, capa rosa. Rare shrub 

 or medium-sized tree in wet forests in mountains from 

 Luquillo to near Cayey and Utuado. Public forest — Lu- 

 quillo. Recorded long ago from St. Thomas. 



682. Cornutia obovata Urban, nigua. Small tree rare 

 and local in moist limestone and Cordillera forests at 

 1,000-3,000 ft (305-914 m) altitude in central mountains 

 of Puerto Rico. Discovered in 1885 on Monte Torrecillo 

 near Barranquitas and 2 trees found there afterwards by 

 Woodbury. Rediscovered in 1938 at Rio Abajo Forest 

 and near San Sebastian. One tree was found in Guajataca 

 Forest in 1940 and later years. Public forests — Gua- 

 jataca, Rio Abajo. 



4. Other Rare Endemic Species 



About 44 other endemic tree species of Puerto Rico 

 and the Virgin Islands listed below, are classed also as 

 rare. Fortunately, they are present in sufficient numbers 

 that they would not be considered threatened or en- 

 dangered. Nearly all are protected within one or more 

 public forests and parks. Almost all are cited in the sec- 

 ond volume (15, p. iv-xiv and p. 19) as rare or endangered 

 (R). Six species not indicated as rare in that list are added 

 here: 336, 512, 590, 607, 636, and 649. 



Aquifoliaceae, Holly Family 



466. Ilex urbaniana Loes., cuero de sapo 

 Araliaceae, Ginseng Family 



625. Didymopanax gleasonii Britton & Wils., yuquilla 



