ANALYSIS OF THE NATURAL ORDERS, 



FOUNDED UPON THE MOST OBVIOUS OR ARTIFICIAL CHARACTERS, DE- 

 SIGNED AS A KEY FOR THE READY DETERMINATION OF ANY PLANT, 

 NATIVE, NATURALIZED OR CULTIVATED, GROWING WITHIN 

 THE LIMITS OF THIS FLORA. y 



PROVINCES, CLASSES AND COHORTS. 



* 

 Sub-kingdom I. Phaenogamia or Flowering Plants. (Province.) 

 Province 1. Bark, wood and pith distinct, tlio two former 

 u concentric layers around the latter. Leaves net-veined. 

 Kower, at least, never completely Z-merous, its parts mostly 



in 4s and 5s. DICOTYLEDONS or EXOGENS. (Class.) 



Class 1. Flowers with stigmas, and pistils enclosing the 

 ovules, becoming seed-vessels enclosing the seeds. ANGIOSPERMS. (Cohort.) 

 Cohort 1. Corolla with the petals distinct. POLYPETALOUS. (A) 



Cohort 2. Corolla with the petals united. GAMOPETALOUS. (B) 



Cohort 3. Corolla (and often the calyx, also,) wanting. APETALOUS. (C) 

 Class 2. Flowers with open scales instead of pistils (or no 

 pistils at all), the ovules naked. (Pine, Cedar, Eir, Y r cw, 



Cypress, etc.) GYMNOSPERMS. (Cohort.) 



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



Province 2. Bark, wood and pith commingled. Lvs. parallel- 

 veined (rarely netted). Fls. Z-merous. MONOCOTYLEDONS or ENDOGENS. 

 Class 3. Fls. with no glumes. PETALIFERJE or AGLUMACEOUS. (Cohort.) 

 Cohort 5. Fls. on a spadix, apetalous or incomplete. SPADICIFLOBJE. (E) 

 Cohort 6. Flowers complete, with a double perianth. FLORIDEiE. (P) 



Class 4. Flowers invested with green, alternate glumes 

 instead of the perianth which is wanting or minute. GLUMIFER^E. (Cohort). 

 Cohort 7. The Grasses and Sedges (same as Class 4). GRAMINOIDE^E. (G) 

 Sub-kingdom II. Cryptogamia, or Flowerless Plants. (Province.) 

 Province 1. With stem and leaves distinguishable, and 



containing woody tissue and vessels. ACROGENS or ANGIOSPOE^E. (H) 



Province 2. With a thallus, often stem-like, but contain- 

 ing cellular tissue only. THALLOGENS or GYMNOSPORjE. (K) 



A Cohort 1. POLYPETALOUS. 



* Herb3 with the leaves alternate or all radical (11). 



* Herbs with the leaves opposite on the stem (7). 



* Shrub3, trees or undershrubs. — Flowers regular or nearly so. (2) 



— Flowers irregular (or fruit a legume), (r) 

 2 Polyandrous, — stamens 3 to 10 times as many as the petals, or more. (3) 

 2 Oligandrous, — stamens 1 — 2 times as many as the petals or fewer. (4) 

 3 Leaves opposite, (s) 



3 Leaves alternate.— Stamen on the receptacle or the hypogynous corolla, (t) 

 — Stamens %nd petals on the calyx-tube. (v3 



