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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

9c. Leaves several, all basal, prominently net-veined, and frequently
    blotched with white (scape 1-4 dm. high; flowers whitish, pubescent,
    in summer) (Rattlesnake Plantain) --26.

9d. Leaves 2 or more, on the stem --28.

     10a. Foliage leaf absent or undeveloped at flowering time, or
          merely persisting through the winter from the previous year
          --11.

     10b. Foliage leaf present at flowering time --12.

11a. Flower rose-purple, 3-5 cm. long, solitary or two (1-3 dm. high,
     early summer)                         =Arethusa, Arethusa bulbosa.=

11b. Flowers purplish-green, in racemes, with a spur 2 cm. long
                                 =Crane-fly Orchis, Tipularia discolor.=

11c. Flowers yellowish, purple tinged, in racemes; spur none (3-4 dm.
     high, early summer).               =Putty Root, Aplectrum hyemale.=

     12a. Leaf linear or linear-lanceolate --13.

     12b. Leaf of a broader shape --14.

13a. Flower solitary or two; leaf just below the flower --11a.

13b. Flowers in a loose raceme, sometimes only 2; leaf basal
                                      =Calopogon, Calopogon pulchellus.=

     14a. Flowers greenish, yellowish, or white --15.

     14b. Flowers pink to purple, often variegated --17.

15a. Flowers 6-10 mm. wide, with a spur about the same length (1-4 dm.
     high, summer) (Rein Orchis) --35.

15b. Flowers 5 mm. wide or less; spur none (1-2 dm. high; summer)
     (Adder's Mouth) --16.

     16a. Pedicels less than 5 mm. long; lip broadest below the middle
                               =Adder's Mouth, Microstylis monophyllos.=

     16b. Pedicels more than 5 mm. long; lip broadest near the apex
                                  =Adder's Mouth, Microstylis unifolia.=

17a. Flowers spicate; lip distinctly 3-lobed (1-2 dm. high; early
     summer) --24.

17b. Flowers solitary or two --18.

     18a. Leaf on the stem, lanceolate to ovate --34a.

     18b. Leaf basal, round-ovate (2 dm. high or less; early summer)
                                             =Calypso, Calypso bulbosa.=

19a. Leaves opposite and sessile near the middle of the stem (1-3 dm.
     high; flowers in summer) (Tway-blade) --20.

19b. Leaves basal --21.

     20a. Lip deeply 2-cleft (flowers purplish)
                                          =Tway-blade, Listera cordata.=

     20b. Lip wedge-shape, with 2 round shallow lobes (flowers
          greenish-yellow)        =Tway-blade, Listera convallarioides.=

21a. Lip an inflated sac about 4 cm. long --29d.

21b. Lip not sac-like --22.

     22a. Flower with a spur 15-50 mm. long --23.

     22b. Flower not spurred (1-2 dm. high; early summer) (Tway-blade)
          --25.

23a. Flowers purple or magenta, or with white markings --24.

23b. Flowers greenish, yellowish, or white (1-4 dm. high; summer) (Rein
     Orchis) --36.

     24a. Leaf 1 (1-2 dm. high; early summer)
                             =Round-leaved Orchis, Orchis rotundifolia.=

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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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