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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

17a. Pedicels erect; clusters usually few-flowered; in extreme northern
     part of the state only (1-3 dm. high; flowers white, summer)
                                        =Chickweed, Stellaria longipes.=

17b. Pedicels spreading; clusters open, many-flowered (2-6 dm. high;
     flowers white, in summer)          =Chickweed, Stellaria graminea.=

     18a. Petals distinctly longer than the sepals --19.

     18b. Petals as long as the sepals, or shorter than them --21.

19a. Flowers much less than 1 cm. wide
                                =Mouse-ear Chickweed, Cerastium nutans.=

19b. Flowers more than 1 cm. wide --20.

     20a. Stem-leaves linear or narrowly lanceolate
                               =Mouse-ear Chickweed, Cerastium arvense.=

     20b. Stem-leaves oblong
            =Mouse-ear Chickweed, Cerastium arvense var. oblongifolium.=

21a. Bracts green; pedicels short and inflorescence crowded
                              =Mouse-ear Chickweed, Cerastium viscosum.=

21b. Bracts with transparent white margins; pedicels longer than the
     calyx and inflorescence open
                              =Mouse-ear Chickweed, Cerastium vulgatum.=

     22a. Styles 5 --23.

     22b. Styles 3 (3-10 dm. high; flowers in summer) --25.

     22c. Styles 2 --29.

23a. Calyx-teeth much longer than the calyx-tube (erect, 4-10 dm. high;
     flowers large, red, late summer)
                                      =Corn Cockle, Agrostemma githago.=

23b. Calyx-teeth shorter than the calyx-tube (4-10 dm. high; flowers in
     summer) --24.

     24a. Flowers crimson             =Mullein Pink, Lychnis coronaria.=

     24b. Flowers white or pink           =White Campion, Lychnis alba.=

25a. Flowers night-blooming, always wilted during the day
                                          =Catchfly, Silene noctiflora.=

25b. Flowers open during the day --26.

     26a. Flowers 6 mm. wide or less, white or pink
                                          =Catchfly, Silene antirrhina.=

     26b. Flowers 1-2 cm. wide, white to pink or purple --27.

     26c. Flowers 2 cm. wide or more, crimson
                                          =Fire Pink, Silene virginica.=

27a. Principal leaves in whorls of 4
                                      =Starry Campion, Silene stellata.=

27b. Leaves opposite --28.

     28a. Calyx globular, much inflated or bladder-like
                                    =Bladder Campion, Silene latifolia.=

     28b. Calyx club-shape, not inflated
                               =Sweet William Catchfly, Silene armeria.=

29a. Leaves linear or narrowly lanceolate, 5 mm. wide or less (flowers
     pink or white, in summer) --30.

29b. Leaves lanceolate or ovate (flowers pink, white, or red, in summer)
     --32.

30a. Flowers in terminal clusters; leaves hairy (2-4 dm. high)
                                      =Deptford Pink, Dianthus armeria.=

30b. Flowers solitary at the ends of long pedicels --31.

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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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