218 NORTH AMERICAN FLORA [Volume 25 



flowered ; sepals triangular to semiorbicular ; petals chartaceous, 2 mm. long ; gynophore 

 wanting ; ovary stipitate, glabrous ; fruit obovoid, 7-8 mm. long, 5-6 mm. in diameter. 



Type locality : Hispaniola. 



Distribution : Santo Domingo ; province of Santa Clara, Cuba. 



6. Amyris elemifera L. Syst. ed. 10. 1000. 1759. 



Amyris mariiima Jacq. Kmnn. PI. Carib. 19. 1760. 



Amyris floridana Nutt. Am. Jour. Sci. 5: 294. 1822. 



Amyris mariiima angusBfolia A. Gray, Proc. Am. Acad. 23: 226. 1888. 



' A myris saussa Fernandez ; Maza, Anal. Soc. Esp. Hist. Nat. 19 : 229, as synonym. 1890. 



Elemifera mariiima Kuntze, Rev. Gen. 100. 1891. 



? Amyris cymosa Reichenb.; Urban, Bot. Jahrb. 21 : 602, as synonym. 1896. 



A very variable shrub or a small tree, sometimes attaining a height of 17 m.; twigs, 

 branches of the inflorescence and petioles glabrous or minutely hispidulous ; leaves 

 opposite or occasionally subopposite ; leaflets 3 or 5, petioluled, glabrous, lanceolate to broadly 

 ovate or rhombic-ovate, 2-7 cm. long, 1-4.5 cm. broad, commonly 3-4 cm. long, 1.5-2.5 cm. 

 broad, acute to long-acuminate or sometimes rounded at the apex, cuneate, rounded, or sub- 

 truncate at the base, leathery, crenulate, the teeth often minute, or entire ; inflorescence 

 terminal or lateral in the axils of the upper leaves ; panicles obovoid or subcorymbiform ; 

 calyx-lobes short-ovate to ovate or triangular ; petals narrowly obovate to obovate or oval, 

 2-3.5 mm. long, 1.7-2.5 mm. broad; gynophore wanting, or partly or well developed; 

 ovary oblong-ovoid to ovoid or ellipsoid, glabrous ; stigma sessile ; drupe commonly globose, 

 occasionally ellipsoid or obovoid, 5-S mm. long, 4-S mm. broad (rarely 1 cm. in diameter), 

 black, glaucous. 



Type locality : Not cited (probably Bahamas). 



Distribution : Florida, Bahamas, West Indies, and Central America. 



Illustrations: Catesb. Nat. Hist. Car. 2: />/. 33 ; Sargent, Silva N. Am. pi. 36 ; Sargent, 

 Man. /. 484 ; Britton, N. Am. Trees /. 531; Nutt. N. Am. Sylva 2 : pi. 78. 



NOTE. A specimen from the Turczaninow Herbarium (Kbarkof) said to have been the type 

 of Amyris Fumkiana Turcz. Bull. Soc. Nat. Mosc. 31 1 : 475 (185S), belongs here. 



7. Amyris balsamifera L. Syst. ed. 10. 1000. 1759. 



Toxicodendron arborescens Mill. Gard. Diet. ed. 8. 1768. 

 Rhus arborescens DC. Prodr. 2 : 73. 1825. 



Amyris sylvaHca var. Griseb. Mem. Am. Acad. II. 8: 176. 1860. 

 Elemifera balsamifera Kuntze, Rev. Gen. 100. 1891. 

 Schimmelia oleifera Holmes, Pharm. Jour. London 62 : 53. 1899. 



An aromatic shrub 2-4 m. in height, or a medium-sized tree ; branches of the inflores- 

 cence and the calyx hispidulous, the hairs commonly persistent in age ; leaves opposite ; 

 leaflets 3 or 5, petioluled, lanceolate to ovate or rhombic-ovate, 3-13 cm. long, 1.3-6 cm. 

 broad, acute to long-acuminate at the apex, cuneate or somewhat rounded at the base, lustrous 

 above, paler and somewhat glaucous beneath, entire or crenulate, with teeth often minute, 

 leathery ; inflorescence terminal or occasionally also lateral and axillary ; petals obovate or 

 oval, 3-3.5 mm. long, 1.5-2 mm. broad ; ovary ovoid or oblong-ellipsoid, hispidulous ; stigma 

 sessile or stipitate ; drupe oblong-ovoid to obovoid, occasionally ellipsoid, often tapering at 

 the base into a short neck, 6-14 mm. long, 3.5-9 mm. broad, black, glaucous. 



Type locality : Jamaica. 



Distribution : .Southern Florida, Cuba, Jamaica, Haiti, and Porto Rico ; also in South America. 



Illustration : Britton, N. Am. Trees/. 532. 



8. Amyris Purpusi P. Wilson, Bull Torrey Club 37 : 86. 1910. 



A small tree with grayish branches ; young twigs, branches of the inflorescence and 

 the petioles minutely hispidulous ; leaves opposite ; leaflets 3, petioluled, elliptic to ovate, 

 2-3.8 cm. long, 1.2-2. 4cm. broad, coriaceous, rounded and somewhat emarginateat theapex, 

 lustrous above, dull and minutely puberulent on the veins beneath, the margin entire or 

 obsoletely crenate, the lateral ones cordate at the base ; inflorescence 3-5 cm. high ; flowers 

 not seen ; sepals triangular, ciliate ; drupe (immature) narrowly obovoid, 4-5 mm. long. 



Type locality : Zacuapan, Vera Cruz. 



Distribution : Known only from the type locality. 



