132 LESSONS IN BOTANY 
ANALYSIS OF THE NATURAL ORDERS, 
Bang a Key for the ready determination of any plant, native or cultivated, 
growing within any State east of the Mississippi river, or bordering on its 
western shore. 
Nore.—A star (*) prefixed to the name of the Order, denotes that that Order, with its 
genera and species, is described in its place in the Flora. The Orders ncs thus marked are 
not noticed in the Flora beyond this Table. ‘The Orders are here numbered . correspond with 
the “Class Book of Botany.” 
CLASSES AND COHORTS 
1 Flowering Plants... 2. Sub-kangdom, PH ANOGAMIA. 
1 Flowerless Planty....Ferns, Mosses, Lichens, Mushroons, 
Sea-weeds, &c. (not further noticed here). Sub-kingdom, CRY PTOGAMIA, 
2. Leaves net-veined., Flowers never completely 3-parted ...3. EXOG ENS, 
2. Leaves parallel-veined (rarely net veined), Flowers 3-parted....4. LVDOGENS. 
8. Stigmas present. Seeds inclosed in a seed-vessel....5. Angiosperms, 
8. Stigmas none. Seeds naked (Pines, Spruces, &c.).. .6. Gymnosperms, 
4 Flowers without glumes, colored or green....7. Petalifere 
4. Flowers with green, alternate glumes, no perianth....8, Glumifere 
5. Corolla with distinct petals....A. Cohort 1. PoLypETa.ous, 
5. Corolla with united petals....B. Cohort 2, GAMOPETALOUS. 
5. Corolla none. Sepals sometimes none .C. Cohort 3. APETALOUS, 
6. The cone-fruited plants (same as Gymnosperms)..D. Cohort 4. Conorps, 
7. Fis. on a spadix, apctalous or incomplete....B. Cohort 5. Spapicrrtora, 
7. Fls. complete, perianth double, No spadix..B. Cohort 6. FLoripez, 
8. The grass-like plants (same as Glumifere). G. Cohort 7. GRaAMINOIDS 
A Orpvers or THE PotypetaLous Exocens 
1. Herbs....2. 
1. Shrubs, trees, or undershrubs, .3, 
. Leaves alternate or all radical....15. 
2. Leaves opposite on the stem....11, 
8. Flowers regular or nearly so....4. 
8. Flowers irregular (or fruit a legume, § 180) ..57 
4, Stamens 8 times as many as the petals, or more.. 5. 
4. Stamens 1 or 2 times as many as the petals, or fewer . 7. 
5. Leaves opposite....60. 
6. Leaves alternate. . 6. 
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