Bkitton : Studies of West Indian plants .'*41 



3. Tin-: GKNUS TKRKHIXTHUS V. mi. IX 

 TIII-: WKST INDUES 



The type species of Tcrchintlitis V. \\\\ is Pistacia Sivianibal.., 

 commonly known as the West Indian birch. A subsequent name 

 for the genus is Burscra Jacq. but, as shown by Dr. J. \. Rose 

 (Contr. U. S. Nat. Herb. 10 : 118), this name is unavailable, because 

 Tcrehinthus has priority. Seven species are known to me from the 

 West Indies, two of them here to be described as new ; the Mexi- 

 can species have been listed by Dr. Rose. 



Leaflets broad, ovate, elliptic, or obovate. 



Leaflets 3-1 1, ovate, acuminate or acute. 



Leaflets thin ; bark exfoliating in thin layers. I. T. Simarubn. 



Leaflets coriaceous ; bark close. 2. T. Hollickii. 



Leaflets only I, obovate to elliptic, obtuse. 3. T. dmplicifolia. 



Leaflets narrow, oblong to lanceolate or oblanceolate. 



Leaflets obtuse at the base. 4. T. glauca. 



Leaflets acute at the base. 



Inflorescence elongated, sometimes as long as the leaves. 



Leaflets 5-1 1, linear-oblong to linear-lanceolate. 5. T. anguslata. 



Leaflets 3-5, oblong to oblanceolate. 6. 7'. inagtiensii. 



Inflorescence short, compact, in fruit not longer than the 

 petioles ; leaflets 1-3. 7. T- Nashii. 



I. Terebinthus Simaruba (L.) W. F. Wight, Contr. U. S. Nat. 



Herb. lO : 122. 1906, 



Pistacia Siinaruha L. Sp. PI. 1026. 1753- 



Biirsera guuwiifcra L. Sp. PI. ed. 2,471. 1762. 



Burscra guvunifcra glabra Griseb. FI. Br. W. I. 173. 1859. 



Burscra guininifcra pnb'cscens Engler, in DC. Mon. Phan. 4 : 40. 



1883. 



Florida ; Bahamas ; Cuba ; Jamaica ; Haiti ; Porto Rico ; St. 

 Thomas to Grenada ; Mexico to Colombia and Venezuela. 



Most of the Jamaica trees have pubescent twigs and leaf-rach- 

 ises ; this hairy race is evidently the typical one, based by Linnaeus 

 on Sloane, pi. K^g. 



2. Terebinthus Hollickii sp. nov 



A tree 6 m. high, with trunk 2.5 dm. in diameter, its bark about 

 8 mm. thick, reddish-gray outside, red inside, close, not peeling 

 off in papery layers. Young twigs stout, pubescent ; leaves 8-12 



