ANALYSIS OF THE NATURAL ORDERS, 



Founded on the most obvious or artificial characters : designed as a key foi 



the ready determination of any plant, native, or naturalized, or 



cultivated, growing within the limits of this Flora. 



PROVINCES, CLASSES, AND COHORTS. 



Sub-kingdom I. The Flowering Plants. . (See, next, Provinces 1,2).. .PHJENOGAMIA. 



Bub-kingdom n. The Flowerless Plants. .(See the Provinces 3, 4) CRYPTOGAMIA. 



Province 1. Leaves net-veined. Flowers never completely 3- 



parted (mostly ^/ and ^0- Embryo with 2 or more cotyledons. 



Wood (if any) in annual circles. . (See Classes 1,2) EXOGENS. 



Province 2. Leaves parallel-veined (rarely netted). Flowers 3- 



parted. Bark, wood, and pith commingled. Embryo with but 



one cotyledon . . (See Classes 3, 4) END GENS. 



Province 3. Stem and leaves distinguishable. .(H) ACBOGENS. 



Province 4. Stem and leaves undistinguishable. . (K) THALLOGENS. 



Class 1. Stigmas present. Seeds enclosed in vessels . . (*) ANGIOSPERMS. 



Class 2. Stigmas 0. Seeds naked (Pines, Firs, Cedars,&c.) (**).. GYMNOSPERMS. 



Class 3. Flowers without glumes. Perianth colored or green. . (t) . .PETALIFER^E. 



Class 4. Flowers with green alternate glumes. No perianth.. (tt). .GLUMIFER^E. 



* Cohort 1. Corolla with the petals distinct.. (A) Polypetalse. 



* Cohort 2. Corolla with the petals united.. (B) Gamopetalre. 



* Cohort 3. Corolla none. Calyx often none. .(C) Apetalue. 



** Cohort 4. The cone-bearing plants (same as Class 2). . (D) Conoids. 



t Cohort 5. Fls. on a *padix, apetalous or incomplete. . (E) . ..Spadiciflorae. 



t Cohort 6. Flowers complete, with a true perianth.. (F) Floridete. 



tt Cohort 7. The Grasses, Grains, &c. (same as class 4)..(G). .Gramiiioids. 



A. COIIOUT 1. POLYPET ALDUS EXOGENS. 



* Herbs with the leaves alternate or all radical. . (12) 



* Herbs with the leaves opposite on the stem. .(9) 



* Shrubs, trees, or undershrubs..(2) 



2 Flowers regular or nearly so. . (3) 



2 Flowers irregular (or the fruit a legume) ( 1(55).. (r) 



8 Polyandrous, stamens 3 10 times as many as the petals.. (4) 



3 Oligandrous, stamens 1 2 times as many as the petals or fewer.. (6) 



