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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

19a. Bundle-scar 1 in each leaf-scar          1b, in =LAURACEAE=, p. 41.

19b. Bundle-scars 3 in each leaf-scar --20.

19c. Bundle-scars 5 in each leaf-scar       7a, in =LEGUMINOSAE=, p. 58.

     20a. Branches thorny                   5a, in =LEGUMINOSAE=, p. 58.

     20b. Branches not thorny                3a, in =URTICACEAE=, p. 24.

                                 --21--

21a. Leaves narrow, needle-like or scale-like; trees mostly evergreen
                                                       =PINACEAE=, p. 1.

21b. Leaves broader, flat, never needle-like or scale-like, falling in
     winter --22.

     22a. Leaves compound --23.

     22b. Leaves simple --29.

23a. Leaves opposite --24.

23b. Leaves alternate --26.

     24a. Leaves palmately compound with 5-7 leaflets
                                                   =SAPINDACEAE=, p. 70.

     24b. Leaves pinnately compound --25.

25a. Leaflets 3-5                             1a, in =ACERACEAE=, p. 70.

25b. Leaflets 7-11                             1b, in =OLEACEAE=, p. 88.

     26a. Stem or branches thorny           4a, in =LEGUMINOSAE=, p. 58.

     26b. Stem or branches not thorny --27.

27a. Leaflets entire                        7a, in =LEGUMINOSAE=, p. 58.

27b. Leaflets entire except for a few large glandular teeth near their
     base                                         =SIMARUBACEAE=, p. 65.

27c. Leaflets serrate their entire length --28.

     28a. Upper leaflets less than 25 mm. wide
                                               4b, in =ROSACEAE=, p. 51.

     28b. Upper leaflets more than 25 mm. wide
                                                  =JUGLANDACEAE=, p. 21.

29a. Leaves opposite --30.

29b. Leaves alternate --32.

     30a. Leaves entire                              =CORNACEAE=, p. 83.

     30b. Leaves toothed or lobed, not entire --31.

31a. Leaves lobed                             1b, in =ACERACEAE=, p. 70.

31b. Leaves merely toothed             27b, in =CAPRIFOLIACEAE=, p. 111.

     32a. Leaves entire --33.

     32b. Leaves toothed --36.

     32c. Leaves lobed --47.

33a. Leaves heart-shape                     3a, in =LEGUMINOSAE=, p. 58.

33b. Leaves not heart-shape --34.

     34a. Twigs and foliage spicy-aromatic    1b, in =LAURACEAE=, p. 41.

     34b. Twigs and foliage not aromatic --35.

35a. Pith 5-angled; fruit an acorn             3a, in =FAGACEAE=, p. 22.

35b. Pith not 5-angled; fruit a berry         1a, in =CORNACEAE=, p. 83.

     36a. Leaves oblique at base, i. e., one side of the leaf larger
          than the other --37.

     36b. Leaves symmetrical, not oblique at base --38.

37a. Leaves heart-shape, about as broad as long      =TILIACEAE=, p. 72.

37b. Leaves oval or ovate, much longer than wide
                                             1a, in =URTICACEAE=, p. 23.

     38a. Stems thorny                        41b, in =ROSACEAE=, p. 54.

     38b. Stems not thorny --39.

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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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