376 RUTACE^. Amyris. 



fragrant wood, small and white paniculate-cyinose flowers, and small oily- 

 aromatic drupes. — Jam. 208; Jacq. Stirp. Am. 107; L. Gen. ed. 6, no. 473; 

 Benth. & Hook. Gen. i. 327; Triana & Planch. Ann. Sci. Nat. ser. 5, xiv. 321 ; 

 Urban, in Engl. Jahrb. xxi. 595 et seq. [Revised by B. L. Robinson.] 



A.* elemifera, L. Shrub or small tree, quite glabrous or with minute pulverulent pubes- 

 cence upon the branchlets and inflorescence : foliage Rue-scented ; leaflets 3 (rarely reduced 

 to 1), ovate, obtuse or acute or acuminate (one or two inches long), shining, prominently 

 many-veined and reticulated, all petiolulate : disk present or rudimentary or obsolete : fruit 

 truly globose. — Syst. Nat. ed. 10, 1000, & Spec. ed. 2, i. 49.5 (excl. syn. Tlum. and hab. 

 Carolina) ; Triana & Planch. Ann. Sci. Nat. ser. 5, pciv, 324 ; Urban, 1. c. 601. A. maritima, 

 Jacq. Enum. PI. Carib. 19 (1760) & Stirp. Am. 107 ; L. Spec. ed. 2, i. 496; Gray, Proc. Aip. 

 Acad, xxiii. 226. Sargent, Silv. i. 85, t. .36 ; Urban, 1. c. 603. A. sylvatica, DC. Prodr. ii. 

 81 ; Sargent, U. S. 10th Census, ix. 33 ; not Jacq. A. Floridana, Nutt. Am. Jour. Sci. v. 

 294 ; not (? ) Sylv. ii. t. 78, which as to oval fruit is rather of the following species. A. viari- 

 tivia, var. angustifolia, Gray, Proc. Am. Acad, xxiii. 226, form only. — Coast and keys of 

 S. Florida. (W. Ind.) Prof. Urban separates A. maritima on tlie presence of a disk and 

 the total absence of minute and variable pubescence, — differences which in this group 

 appear to have little weight and to lead to artificial distinctions. 



A.* balsamifera, L. Shrub or small tree with habit of the last, but leaflets 3 to 5, larger, 

 ovate-lanceolate, more attenuate-acuminate, 2 to 3| inches long : fruit decidedly elongated, 

 oval or obovate in outline, somewhat stiped at the base. — Syst. Nat. ed. 10, 1000, & Spec, 

 ed. 2, i. 496 (excl. syn. Sloane) ; Urban, 1. c. 604. ? A. Floridana, Nutt. Sylv. ii. t. 78 (as 

 to form of fruit but scarcely as to leaves). A. maritima, Gray, Proc. Am. Acad, xxiii. 226, 

 in small part. — Miami, S. Florida, Garber, in fl. May, and fr. June, 1877. (W. Ind., 

 S. Am.) 



A. parvifolia, Gray. Low shrub, glabrous : leaflets rhombic-ovate or narrower, obtuse, 

 dull, inconspicuously reticulated, irregularly crenate or crenulate, half inch to inch long, 

 lateral ones (and sometimes the terminal) short-petiolulate or subsessile : flowers small. 

 — Proc. Am. Acad, xxiii. 226. — S. Texas, banks of Rio Grande near its mouth, Sargent. 

 (North Mex., Eaton & Edwards, Pringle.) 



8. CITRUS, L. Orange, &c. (Ancient name of Citron-tree.) — Tropi- 

 cal-Asian spinescent trees or shrubs, with bright green and somewhat coriaceous 

 unifoliolate leaves, commonly winged petiole, and mostly white (or outside pur- 

 plish) sweet-scented axillary flowers. — Syst. Nat. ed. I, & Gen. no. 605. — The 

 Lemon, Lime, Citron, and various kinds of Orange familiar in cultivation; 

 one variety of the last completely naturalised in Florida. [Revised by L. H. 

 Bailey.] 



C.* AurAntium, L., var. vulgAris, Wight. & Arn. (Sour and Bitter Oranges.) Glabrous : 

 petiole distinctly winged : fruit small, orange-colored, oblate, with rugose and very aromatic 

 rind, the pulp bitter-sweet or bitter and sour. — Prodr. Fl. Ind. i. 97. Var. Bigaradia, 

 Brandis, For. Fl. 53. C. vidgaris, Risso, Ann. Mus. Paris, xx. 190; DC. Prodr. i. 539; 

 Nutt. Sylv. ii. 106, t. 76. C. Bigarradia, Loisel. in Nouv. Duham. vii. 99. — A spontaneous 

 form of the orange, likely a reversion from cultivated varieties and thoroughly naturalized 

 in Florida from an unknown period. (Similar run-wild forms in many parts of the world.) 



Order XXXIV. SIMARUBACE^. 



By A. Gray. 



Trees and shrubs, with the general characters of Rutacece Xanthoxylece, except 

 that the leaves are dotless and the pervading principle pure bitterness without 



