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

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

39a. Leaves finely toothed, with 3-many teeth per centimeter of margin
     --40.

39b. Leaves coarsely toothed, with 1-2 teeth per centimeter of margin
     --46.

     40a. Petioles laterally compressed      2a, in =SALICACEAE=, p. 19.

     40b. Petioles not compressed --41.

41a. Leaves, or many of them, crowded on short spur-like branches --42.

41b. Leaves scattered, not on short spur-like branches --43.

     42a. Bark of the trunks separating in thin papery or leathery
          sheets                                    =BETULACEAE=, p. 21.

     42b. Bark of the trunk not papery or leathery
                                              24b, in =ROSACEAE=, p. 53.

43a. Lateral leaf-veins straight and parallel, and terminating in the
     teeth                                          =BETULACEAE=, p. 21.

43b. Lateral veins more or less curved, and not ending in the teeth
     --44.

     44a. Leaves palmately veined, about as broad as long; juice
          somewhat milky                     2b, in =URTICACEAE=, p. 23.

     44b. Leaves pinnately veined; juice not milky --45.

45a. Willows, with slender leaves and brittle twigs
                                             8a, in =SALICACEAE=, p. 19.

45b. Trees with lanceolate, ovate, or oblong leaves and tough twigs
                                               30, in =ROSACEAE=, p. 54.

45c. Cottonwoods, with broad, heart-shape or rounded leaves
                                             1a, in =SALICACEAE=, p. 19.

     46a. Petioles laterally compressed      2a, in =SALICACEAE=, p. 19.

     46b. Petioles not compressed; lateral veins straight and parallel,
          running directly to the teeth               =FAGACEAE=, p. 22.

47a. Stem thorny                              41b, in =ROSACEAE=, p. 54.

47b. Stem not thorny --48.

     48a. Leaves palmately veined --49.

     48b. Leaves pinnately veined --51.

49a. Lobes of the leaf entire                 1b, in =LAURACEAE=, p. 41.

49b. Lobes of the leaf serrate --50.

     50a. Juice somewhat milky; lateral buds visible
                                             2b, in =URTICACEAE=, p. 23.

     50b. Juice not milky; lateral buds covered by the base of the
          petiole                                  =PLATANACEAE=, p. 51.

51a. Leaves with 4 large entire lobes; stem marked with a ring at each
     node                                         =MAGNOLIACEAE=, p. 40.

51b. Leaves with many lobes; stem not ringed   1b, in =FAGACEAE=, p. 22.

                                 --52--

     52a. For specimens bearing leaves only --53.

     52b. For specimens bearing flowers only --140.

     52c. For specimens with both leaves and flowers --155.

53a. Leaves narrow, needle-like or scale-like, mostly evergreen --54.

53b. Leaves broader, flat or rolled, but not needle-like or scale-like
     --56.

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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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