TREES AND SHRUBS. 



COLUBRES^A ARBORESCENS (Mill.), Saeg. 



Colubrina arborescens (Miller), Sargent, nov. comb. 



Khamnus colubrinus, Jacquin, Enum. PI. Carib. 16 (1760); Hist. Stirp. Am. 74 j Hist. 



Select. Stirp. Am. 39, t. 74 ; Hort. Vind. iii. t. 50. — Linnaeus, Spec. ed. 2, 280. — Willdenow, 



Spec. i. pt. ii. 1096. — Poiret, Lamarck Diet. iv. 468. — Rcemer & Schultes, Spec. v. 284. — 



Maycock, Fl. Barb. 112. 

 Ceanothus arborescens, Miller, Diet. ed. 8, No. 3 (1768). 

 Ceanothtjs colubrinus (Jacquin), Lamarck, III. ii. 90 (1793). — De Candolle, Prodr. ii. 31. — 



Persoon, Syn. i. 244. — Macfadyen, Fl. Jam. i. 212 (excl. syn. Ceanothus reclinatus). 

 Coltjbrina ferruginosa, Brongniart, Mem. Fam. Rhamn. 62, t. 4, f. 3 (1826) ; Ann. Sci. Nat. 



ser. 1, x. 369. — Grisebach, Fl. Brit. W. Ind. 100 ; Cat. PI. Cub. 34.— Eggers, Bull, U. S. 



Nat. Mus. No. 13, 40 (Fl. St. Croix and the Virgin Islands). — Trelease, Trans. St. Louis 



Acad. Sci. v. 369; Gray Syn. Fl. N. Am. i. pt. i. 418. — Maze, Fl. Guadeloupe, 19.— 



Hitchcock, Rep. Mo. Bot. Gard. iv. 71. 

 Rhamnus ferruginosa (Brongniart), Nuttall, Jour. Acad. Nat. Sci. Phila. vii. 90 (1834). — 



Torrey & Gray, Fl. N. Am. i. 263. 

 Personok(?) ferrugineum, Rafinesque, Sylva Tellur. 29 (1838). 

 Marcorella colubrina (Jacquin), Rafinesque, Sylva Tellur. 31 (1838). 

 Colubrina ferruginea, A. Richard, Ess. Fl. lie Cub. i. 358 (1845) ; Fl. Cub. ii. 146. — 



Coombs, Trans. St. Louis Acad. Sci. vii. 409. 

 Colubrika Americana, Nuttall, Sylva N. Am. ii. 47, t. 58 (1846) ; Chapman, Fl. 74. 

 Colubrina colubrina (Jacquin), Millspaugh, Pub. Field Columb. Mus. Bot. Ser. ii. 69 (1900). — 



Small, Fl. Southeastern U. S. 752 ; Torreya, xi. 13. 



Leaves alternate, coriaceous, persistent, elliptical to ovate-lanceolate, gradually narrowed and 

 blunt-pointed at the apex, narrowed and rounded or cuneate at the base, entire, dark green, gla- 

 brous and lustrous on the upper surface, below pale, coated with thick rusty pubescence, and 

 sometimes marked by conspicuous glands mostly at the ends of small veins between the five or 

 six pairs of more conspicuous primary veins, from 5 to 12 centimetres long and from 3 to 6 centi- 

 metres wide, with thick midribs ; petioles stout, rusty-pubescent, from 1.5 to 2 centimetres in 

 length; stipules oblong, acuminate, rusty-pubescent, caducous. Flowers perfect, minute, in 

 axillary cymes shorter than the petioles, covered with persistent rusty pubescence and generally 

 produced on short axillary branches ; calyx-tube hemispherical, persistent under the fruit, five- 

 lobed, the lobes triangular, ovate, conspicuously keeled on the outer surface, spreading, deciduous 

 by a circumcissile line ; petals five, inserted under the margin of the five-angled disk, white or 

 nearly white, shorter than the calyx-tube, cucullate, unguiculate, infolding the stamens ; stamens 

 five, opposite and inserted with the petals; filaments slender, incurved; anthers ovate, attached 

 on the back near the base, introrse, two-celled, the cells opening longitudinally ; ovary subglose, 

 glabrous, surrounded and confluent with the disk, three-celled, contracted into a slender three- 

 lobed style, the lobes obtuse and stigmatic on their inner face ; ovule solitary in each cell, erect 

 from its base, anatropous, raphe ventral, micropyle inferior. Fruit on stout rusty-pubescent pedi- 



