Sapindaceae, Soapberry Family 



142. Thouinia portoricensis Radlk., serrasuela 



143. Thouinia striata Radlk., ceboruquillo 



Sapotaceae, Sapodilla Family 



639. Chrysophyllum pauciflorum Lam., caimito de 

 perro 



212. Micropholis garciniifolia Pierre, caimitillo verde 



Simaroubaceae, Ailanthus Family 



411. Simarouba tulae Urban, aceitillo cimarron 

 Theaceae, Tea Family 



515. Ternstroemia stahlii Krug & Urban, mamey del 

 cura 



Thymelaeaceae, Mezereon Family 



177. Daphnopsis philippiana Krug & Urban, majagua 

 brava 



6. Rare Species Native Beyond (Nonendemic) 



Besides the endemics, about 100 species native also 

 beyond or outside of Puerto Rico and the Virgin Islands, 

 or nonendemic species, could be classed as rare there. 

 The list below has been revised and expanded from the 77 

 cited by number in the second volume (15, p. 18). After 

 further field work, 5 species were removed. Also, 16 from 

 that volume, 10 from the first volume, and 2 others have 

 been added as rare. 



More than two-thirds of the 100 rare nonendemic tree 

 species are protected within public forests and parks. 

 These 22 species have been recorded from the Caribbean 

 National Forest: 42, 52, 56, 254, 300, 325, 339, 341, 353, 

 417, 421, 450, 489, 510, 511, 528, 529, 593, 599, 683, 695, 

 and 724. 



These 15 species are very rare and should be watched: 

 285, 306, 322, 324, 335, 449, 458, 476, 477, 558, 592, 593, 

 663, 719, and 730. Four species are becoming scarce in 

 Puerto Rico because of their useful woods: 93, 94, 101, 

 and 108. 



Six are absent from Puerto Rico. Three at Mona Island 

 only are 268, 492, and 745. Two in the Virgin Islands but 

 not Puerto Rico are 409 and 449. One, 306, is from 

 Culebra, Vieques, St. Thomas, and St. Croix. 



Nearly all these 100 rare nonendemics are border or 

 peripheral species. They have wider distribution beyond 

 Puerto Rico and the Virgin Islands to other islands or 

 even the continent. Thus, disappearance on these islands 

 could not cause extinction. Nevertheless, the accessible 

 trees here merit protection as needed. Most of these tree 

 species are not native within continental United States. 



Annonaceae, Annona Family 



322. Oxandra lanceolata (Sw.) Baill., haya prieta, 

 lancewood 



324. Rollinia mucosa (Jacq.) Baill., anon cimarron. 

 Very rare. 



Aquifoliaceae, Holly Family 



458. Ilex cassine L., dahoon. Very rare. 



460. Ilex guianensis (Aubl.) Kuntze, macoucoua 



Bignoniaceae, Bignonia Family 



703. Enallagma latifolia (Mill.) Small, higuerita, 

 black-calabash 



Boraginaceae, Borage Family 



676. Rochefortia acanthophora (DC.) Griseb., juso 

 676.1. Rochefortia cuneata Sw., espino 



677. Tournefortia filiflora Griseb., nigua 



Buxaceae, Box Family 



453. Buxus laevigatus (Sw.) Spreng. 



Cactaceae, Cactus Family 



539. Opuntia moniliformis (L.) Haw. Destroyed by 

 cactus moth. 



Cunoniaceae, Cunonia Family 



56. Weinmannia pinnata L., oreganillo 

 Cyatheaceae, Tree-fern Family 



254. Cyathea wilsonii (Hook.) Proctor, helecho 

 gigante, tree-fern 



Ebenaceae, Ebony Family 



648. Diospyros revoluta Poir., guayabota 

 Elaeocarpaceae, Elaeocarpus Family 



494. Sloanea amygdalina Griseb. 

 Erythroxylaceae, Coca Family 



392. Erythroxylum rufum Cav. 



393. Erythroxylum urbanii O. E. Schulz 



Euphorbiaceae, Spurge Family 



438. Drypetes ilicifolia Krug & Urban, encinillo 

 446.1. Phyllanthus cuneifolius (Britton) Croizat 



449. Sapium caribaeum Urban. Perhaps extinct on St. 

 John but found on Tortola. 



450. Sapium jamaicense Sw., tabaiba 



Flacourtiaceae, Flacourtia Family 



528. Laetia procera (Poepp. & Endl.) Eichl., talantron 



529. Lunania buchii Urban 

 531. Prockia crucis L. 



535. Xylosma schaeferioides A. Gray 



K) 



