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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

108a. Leaves with 2 or 3 entire lobes, spicy-fragrant when crushed
                                              1b, in =LAURACEAE=, p. 41.

     108b. Leaves with milky juice           2b, in =URTICACEAE=, p. 23.

     108c. Leaves neither spicy-fragrant nor with milky juice --109.

109a. Stem covered with brown bristles         29, in =ROSACEAE=, p. 54.

109b. Stem not bristly --110.

     110a. Sides of the petiole strongly decurrent on the stem;
           bundle-scars crowded or nearly in contact in the leaf-scars
                                              28b, in =ROSACEAE=, p. 53.

     110b. Sides of petiole little decurrent or not at all; bundle-scars
           distinctly separate            2b, in =SAXIFRAGACEAE=, p. 49.

111a. Leaves aromatically fragrant when crushed --112.

111b. Leaves not aromatically fragrant when crushed --113.

     112a. Leaves broadly obovate, entire; a common woodland shrub
                                              1a, in =LAURACEAE=, p. 41.

     112b. Leaves linear-lanceolate or oblanceolate, conspicuously
           toothed or entire                        =MYRICACEAE=, p. 20.

113a. Leaves entire --114.

113b. Leaves toothed or lobed --121.

     114a. Base of the petiole covering the axillary buds; twigs marked
           with rings                            =THYMELAEACEAE=, p. 77.

     114b. Base of petiole not covering the bud, and twigs not marked
           with rings --115.

115a. Pith with prominent partitions; tall shrubs with fetid bark;
      leaves obovate, 10 cm. long or larger          =ANONACEAE=, p. 40.

115b. Pith not partitioned; leaves smaller --116.

     116a. Leaves waxy or resinous underneath
                                             24b, in =ERICACEAE=, p. 86.

     116b. Leaves not waxy or resinous --117.

117a. Lateral veins curved forward and almost parallel to the margin of
      the leaf                                2a, in =CORNACEAE=, p. 83.

117b. Lateral veins spreading --118.

     118a. Leaves lanceolate or linear, much longer than wide --119.

     118b. Leaves ovate or elliptical --120.

119a. Stem weak, spreading or trailing      5a, in =SOLANACEAE=, p. 100.

119b. Stems, or some of them, erect         3b, in =LEGUMINOSAE=, p. 58.

     120a. Leaves with purple petioles, which are at least one-fourth as
           long as the leaf-blade         1a, in =AQUIFOLIACEAE=, p. 69.

     120b. Leaves with short petioles or sessile
                                             24c, in =ERICACEAE=, p. 86.

121a. Lateral veins straight and parallel, mostly ending in the teeth of
      the leaf --122.

121b. Lateral veins not straight and parallel --129.

     122a. Leaves 2-ranked, i. e., in two longitudinal rows, with the
           third leaf directly above the first --123.

     122b. Leaves not 2-ranked --127.

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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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