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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

123a. Leaves unsymmetrical, oblique at the base, i. e., with one side of
      the leaf larger than the other            =HAMAMELIDACEAE=, p. 51.

123b. Leaves symmetrical or nearly so at the base --124.

     124a. Lateral leaf-veins ending in the leaf-teeth --125.

     124b. Lateral veins not ending in the teeth
                                              42b, in =ROSACEAE=, p. 55.

125a. Bark smooth and fluted on the large stems
                                             1b, in =BETULACEAE=, p. 21.

125b. Bark rough or warty or glandular --126.

     126a. Leaves 4 cm. long or less         3a, in =BETULACEAE=, p. 22.

     126b. Leaves 5 cm. long or more         9b, in =BETULACEAE=, p. 22.

127a. Pith 3-angled                          6a, in =BETULACEAE=, p. 22.

127b. Pith 5-angled                           13b, in =FAGACEAE=, p. 23.

127c. Pith cylindrical --128.

     128a. Leaves finely serrate              42b, in =ROSACEAE=, p. 55.

     128b. Leaves coarsely or doubly serrate  41a, in =ROSACEAE=, p. 54.

129a. Leaves coarsely or doubly serrate --130.

129b. Leaves simply serrate --131.

     130a. Leaves 2-ranked, i. e., in two longitudinal rows, with the
           third leaf directly over the first
                                             9b, in =BETULACEAE=, p. 22.

     130b. Leaves not 2-ranked                41a, in =ROSACEAE=, p. 54.

131a. Leaves with glands on the petiole or at the base of the leaf-blade
      --132.

131b. Leaves with small dark glands on the upper side of the mid-vein
                                              42a, in =ROSACEAE=, p. 54.

131c. Leaves without glands --133.

     132a. Willows; with usually slender leaves, frequently conspicuous
           broad stipules, and lateral buds protected by a single
           external bud-scale                13, in =SALICACEAE=, p. 20.

     132b. Plums and cherries; with leaves lanceolate or broader, and
           stipules minute and falling early in the season; lateral buds
           with more than one bud-scale        30, in =ROSACEAE=, p. 54.

133a. With stipules or with stipular scars indicating where stipules
      have been detached --134.

133b. Without stipules or stipular scars --138.

     134a. With three bundle-scars in each leaf-scar --135.

     134b. With one bundle-scar in each leaf-scar --136.

135a. Willows; usually with slender leaves and twigs and frequently with
      large conspicuous stipules; lateral buds covered by a single
      external bud-scale                     13, in =SALICACEAE=, p. 20.

135b. Juneberries; with oblong or ovate leaves and small stipules which
      fall early; lateral buds with more than one external scale
                                              42b, in =ROSACEAE=, p. 55.

     136a. Leaves mostly entire, only a few here and there with low
           teeth                          1a, in =AQUIFOLIACEAE=, p. 69.

     136b. Leaves sharply toothed --137.

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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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