ORDER XLIV. ROSACEA. 297 



1. D. BRAcnvLo'BA, (D. C.) Slcm glabrous, unarmed. Leaves bipin 

 Dcate, 6 — 14 pairs of linear leaflt'ts, numerou.-*, wit,li a gland at the base 

 of each pair, or only at the lowest pair. Flowcm in axillary heads 

 Z7/?w;<i'« crowded, by abortion often 1 — 2-seeded. — White, y. I'lor 

 ida and Southwestern States. 1 — 3 feet. 



Genus LI.— ACA'CIA. Necker. 15—10. 

 (From flc, a point, and akazo, to sharpen, many of the species having thorns.) 



Flowers polygamous. Calyx 4-toothed. Petals slightly 

 united at the base. Stamens 10, inserted into the base of the 

 corolla. Legume 1-celled, many-seeded. Plants with bipin- 

 nate leaves ; leaflets numerous. Flowers in heads or spikes. 



1. A. lute' A, (Leav.) Stem herbaceous, procumbent, unarmed, pu 

 bescent, with angular branches ; stipules nearly subulate, petioles with- 

 out glands. Leaflets linear-oblong, ciliate. Floicers on axillary pedun- 

 cles, in oblong heads; calyx deeply cleft; petals ovate-acute. Legumes 

 stipitate,. compressed, about half an inch long. — Yellow. 11. Ala. and 

 Lou. 



Genus LIL— VACHEL'LIA. W. & Am. 



Calyx 5-toothed. Flowers polygamous. Petals united, 

 forming a 5 — 6-toothed corolla. Stamens numerous, distinct. 

 Legume cylindrical, turgid, filled with pulp. Seeds in a double 

 row. 



1. V. Faunesia'na, (W. <fe Arn.) A small tree, with stipular spines. 

 Leaves bipinnate ; leaflets numerous. Flowers in globular heads. Pe- 

 duncles axillary. Yields gum. — Yellow. ^ . Flor. and Lou. 



The Order Leguminosa3 is one of the most extensive and important. It yields to 

 medicine and the arts its full proportion of the substances derived from the vegetable 

 kingdom. In the Pea and Bean it affords two important articles of food, and in point 

 of beauty many of its productions are scarcely rivalled. Among tho most importint 

 articles of the Materia Medica derived from this order are the gums Tragacanth.^ 

 Arabic, and Kino ; Senna, Tamarind, Catechu, from a species of Acacia; Dragon's 

 Blood, Cowhage, from the Dolichos pruriens ; and Balsam Copai\ a and Tola. To the 

 arts it affords Indi^'o, Logwood, Rosewood, a sptjcies of Mimosa, Sandal-wood, &0.; 

 as food for men and animals, tlie Pea, the Bean, Clover, Lucerne, Jco. 



Order XLIV.— ROSA'CEJE. 



Se2Mls usually 5, more or less united, persistent. Petals 5, 

 perigynous, occasionally absent. Stamens numerous, inserted 

 into the lining of the calyx. Ovaries solitary or several, some- 

 times united with the calyx or with each other. Seeds anatro- 

 pous. Leaves alternate, stipulate, simple, or compound. 



ANALYSIS. 



1. Calyx inferior 2 



Calyx superior 12 



2. Ovary solitary 8 



Ovaries more than 1 .* 5 



3. Style arising from the base of the ovary Chryaobalanus, I 



Style terminal 4 



13* 



