ANALYSIS OF THE NATURAL ORDERS, 



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



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).. .PH2ENOGAMIA. 

 Sub-kingdom II. The Flowerless Plants. . (See the Provinces 3, 4). . . .CKYPTOGAMIA. 

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

 parted (mostly ^/ and ^/). 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 Clares 3, 4) ENDOGEXS. 



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



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



x ^Class 1. Stigmas present. Seeds enclosed in vessels.. (*) ANGIOSPERMSr 



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

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

 Cla?s 4. Flowers with green alternate glumes. No perianth.. (tt). .GLUMIFER^E. 



'* Cohort 1. Corolla with the petals distinct.. (A) Poly petals?. 



* Cohort 2. Corolla with the petals united.. (B) Gam o petal so. 



* Cohorts. Corolla none. Calyx often none.. (C) Apetalte. 



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



t Cohort 5. FK on a upadix, apetalous or incomplete. . (E). ..Spadiciflora>. 



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



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



A. COHORT 1. POLYPETALOUS EXOGENS. 



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



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



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



2 Flowers regular or nearly so. . (3) 



2 Flowers irregular (or the fruit a legume) ( 165).. (r) 



8 Polyandrous, stamens 310 times as many as the petals.. (4) 



3 OligandrotiB, stamens 1 2 lirnee as many as the petals or fewer.. 



