The Plants of Michigan - novelonlinefull.com
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74a. Bark of the ripe twigs green 1b, in =CELASTRACEAE=, p. 69.
74b. Bark of the ripe twigs brown, reddish, or gray --75.
75a. Twigs with a prominent hairy ridge extending downward from the middle of the line connecting the petiole bases 13a, in =CAPRIFOLIACEAE=, p. 110.
75b. Twigs without any p.u.b.escent ridge --76.
76a. Erect shrubs; leaves obviously toothed 11b, in =CAPRIFOLIACEAE=, p. 110.
76b. Spreading shrubs; most of the leaves entire, and only here and there some with serrate margins 18b, in =CAPRIFOLIACEAE=, p. 110.
77a. Leaves silvery beneath with a dense coating of scales =ELAEAGNACEAE=, p. 77.
77b. Leaves green beneath, or somewhat hairy and light-colored --78.
78a. Aquatic plant with lanceolate leaves, and stems bending over and into the water 1a, in =LYTHRACEAE=, p. 77.
78b. Not truly aquatic, although frequently in wet places --79.
79a. Leaves evergreen, as shown by their presence on the older stems 18a, in =ERICACEAE=, p. 85.
79b. Leaves deciduous each year --80.
80a. Leaves dotted with translucent dots, easily seen when the leaf is held to the light 1a, in =HYPERICACEAE=, p. 73.
80b. Leaves not dotted with translucent dots --81.
81a. Lateral veins curved forward and running almost parallel to the leaf-margin =CORNACEAE=, p. 83.
81b. Lateral veins spreading, and not paralleling the leaf-margin --82.
82a. Leaves with stipules 1a, 1a, in =RUBIACEAE=, p. 108.
82b. Leaves with a prominent ridge connecting them at the base --83.
82c. Leaves with neither stipules nor connecting ridges 1a, in =OLEACEAE=, p. 88.
83a. Bundle-scar one in each leaf-scar 18b, in =CAPRIFOLIACEAE=, p. 110.
83b. Bundle-scars three in each leaf-scar (Honeysuckle) 12, in =CAPRIFOLIACEAE=, p. 110.
84a. Leaves compound --85.
84b. Leaves simple --95.
85a. Stems p.r.i.c.kly or th.o.r.n.y --86.
85b. Stems without p.r.i.c.kles or thorns --88.
86a. Leaves twice-pinnate 4a, 1a, in =ARALIACEAE=, p. 80.
86b. Leaves evenly pinnate 5b, in =LEGUMINOSAE=, p. 58.
86c. Leaves odd-pinnate or trifoliate --87.
87a. Leaflets entire 1a, 1a, in =RUTACEAE=, p. 65.
87b. Leaflets serrate 3b, 3b, in =ROSACEAE=, p. 51.
88a. Leaflets 3 --89.
88b. Leaflets 5 to many --91.
89a. Tall shrubs; leaflets entire or minutely toothed 1b, in =RUTACEAE=, p. 65.
89b. Shrubs 2 m. high or less; leaves conspicuously toothed --90.
90a. Stipules present 17b, in =ROSACEAE=, p. 53.
90b. Stipules none 1b, in =ANACARDIACEAE=, p. 68.
91a. Leaflets 6-25 mm. long --92.
91b. Leaflets 30 mm. long, or more --93.
92a. Leaflets mostly 5, rarely 3 or 7 7a, in =ROSACEAE=, p. 52.
92b. Leaflets mostly 9-19, 15 mm. long or more 26a, in =LEGUMINOSAE=, p. 60.
92c. Leaflets mostly 25-45, less than 15 mm. long 8a, in =LEGUMINOSAE=, p. 58.
93a. Leaflets entire 3a, in =ANACARDIACEAE=, p. 68.
93b. Leaflets entire, except for 1-4 large glandular teeth near their base =SIMARUBACEAE=, p. 65.
93c. Leaflets toothed throughout --94.
94a. Juice milky 1a, in =ANACARDIACEAE=, p. 68.
94b. Juice not milky 3a, in =ROSACEAE=, p. 51.
95a. Leaves minute, scale-like, appressed 2a, in =CISTACEAE=, p. 74.
95b. Leaves 3-10 mm. long, spreading, completely rolled into a tube =EMPETRACEAE=, p. 68.
95c. Leaves normal in shape, green in color --96.
96a. Leaves evergreen, as shown by their presence on the older parts of the stem 4b, in =ERICACEAE=, p. 84.
