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The Plants of Michigan: Simple Keys for the Identification of the Native Seed Plants of the StateGleason, Henry A. (Henry Allan)

Science

The Plants of Michigan: Simple Keys for the Identification of the Native Seed Plants of the State

Name: The Plants of Michigan: Simple Keys for the Identification of the Native Seed Plants of the State
Author: Gleason, Henry A. (Henry Allan)

Gleason, Henry A. (Henry Allan)

Plants -- Michigan

3a. Flowers in catkins, without brightly colored or petal-like parts
    --4.

3b. Flowers not in catkins, either with or without petals --14.

     4a. Leaf-scars and lateral buds 2-ranked, i. e., in two
         longitudinal rows with the third leaf above the first --5.

     4b. Leaf-scars and buds in three or more longitudinal rows --9.

5a. From 1 to 3 bud-scales visible on each leaf-bud
                                               2b, in =FAGACEAE=, p. 22.

5b. From 4 to 7 bud-scales visible on each leaf-bud --6.

5c. From 8 to 20 bud-scales visible on each leaf-bud; buds long and
    slender; bark of the trunk smooth --8.

     6a. Bundle-scars 5 or more              2b, in =URTICACEAE=, p. 23.

     6b. Bundle-scars 3 --7.

7a. Twigs bearing numerous dwarf branches thickly covered with crowded
leaf-scars (Birch)                                  =BETULACEAE=, p. 21.

7b. Twigs without dwarf branches (Ironwood)  9a, in =BETULACEAE=, p. 22.

     8a. Trunk cylindrical or nearly so        2a, in =FAGACEAE=, p. 22.

     8b. Trunk prominently fluted with longitudinal ridges
                                             1b, in =BETULACEAE=, p. 21.

9a. Bundle-scars 3 in each leaf-scar --10.

9b. Bundle scars more than 3 in each leaf-scar --12.

     10a. Pith divided into separate cavities by transverse partitions
                                           1a, in =JUGLANDACEAE=, p. 21.

     10b. Pith not partitioned --11.

11a. Buds small, with only one external bud-scale
                                             1b, in =SALICACEAE=, p. 19.

11b. Buds with more than one outer bud-scale
                                             1a, in =SALICACEAE=, p. 19.

     12a. Buds clustered near the tips of the twigs
                                               1b, in =FAGACEAE=, p. 22.

     12b. Buds not clustered at the tips of the twigs --13.

13a. Buds with about 3 visible bud-scales      2b, in =FAGACEAE=, p. 22.

13b. Terminal bud large, with 4 or more visible bud-scales
                                           1b, in =JUGLANDACEAE=, p. 21.

     14a. Flowers conspicuous, brightly colored, at least 8 mm. wide.
          with both calyx and corolla --15.

     14b. Flowers inconspicuous, seldom brightly colored, and then less
          than 8 mm. wide --17.

15a. Flowers irregular, pink or red         3a, in =LEGUMINOSAE=, p. 58.

15b. Flowers regular, white --16.

     16a. Ovary one, superior, in the center of the flower
                                              32b, in =ROSACEAE=, p. 54.

     16b. Ovary inferior, appearing as a swelling below the calyx at the
          summit of the pedicel               42b, in =ROSACEAE=, p. 55.

17a. Leaf-scars and buds opposite --18.

17b. Leaf-scars and buds alternate --19.

     18a. Bundle-scar one in each leaf-scar     1b, in =OLEACAE=, p. 88.

     18b. Bundle-scars 3 or more in each leaf-scar   =ACERACEAE=, p. 70.

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The Plants of Michigan: Simple Keys for the Identification of the Native Seed Plants of the State

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