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
Gleason, Henry A. (Henry Allan)
Plants -- Michigan
3b. Petal-bearing flowers few, racemose
=Frostweed, Helianthemum majus.=
4a. Stem-leaves linear, 4 or more times as long as wide --5.
4b. Stem-leaves oblong or elliptical, about 3 times as long as wide
(2-6 dm. tall) --8.
5a. Plant pale with dense appressed pubescence (2-4 dm. high)
=Pinweed, Lechea stricta.=
5b. Plant green, pubescence sparse or none --6.
6a. Leaves thread-like, seldom exceeding 1 mm. in width (1-3 dm.
tall) =Pinweed, Lechea tenuifolia.=
6b. Leaves 1-5 mm. wide (2-6 dm. high) --7.
7a. Leaves on the basal shoots narrowly lanceolate
=Pinweed, Lechea intermedia.=
7b. Leaves on the basal shoots oblong-elliptic, about twice as long as
wide =Pinweed, Lechea racemulosa.=
8a. Pubescence of spreading hairs =Pinweed, Lechea villosa.=
8b. Pubescence of appressed hairs =Pinweed, Lechea minor.=
VIOLACEAE, the Violet Family
Herbs with simple, alternate or basal leaves, and conspicuous irregular
flowers with a spur (except in the first species); sepals, petals, and
stamens each 5; ovary 1-celled.
1a. Flowers regular or nearly so, greenish-white, axillary; erect plant
with leafy stem (3-5 dm. high; spring)
=Green Violet, Hybanthus concolor.=
1b. Flowers irregular, blue, yellow, or white, conspicuous (Violet) --2.
2a. Plant stemless, the flowers all on leafless stalks and the
leaves all basal (spring or early summer) --3.
2b. Stems leafy (spring and summer) --17.
3a. Petals yellow =Round-leaved Violet, Viola rotundifolia.=
3b. Petals blue, violet, or white --4.
4a. Principal leaves at time of flowering deeply lobed --5.
4b. Leaves oblong, ovate, or triangular, not narrowed to the
petiole, and frequently sharply toothed or incised near the
base --7.
4c. Leaves narrowly lanceolate, tapering to the base
=Violet, Viola lanceolata.=
4d. Leaves heart-shape or kidney-shape, not lobed --8.
5a. Lateral petals bearded --6.
5b. Lateral petals not bearded =Bird-foot Violet, Viola pedata.=
6a. Leaves divided to the base into linear segments
=Bird-foot Violet, Viola pedatifida.=
6b. Leaves irregularly divided into broader segments
=Hand-leaf Violet, Viola palmata.=
7a. Leaves ovate-oblong, pubescent =Violet, Viola fimbriatula.=
7b. Leaves triangular-lanceolate, usually somewhat dilated at base,
nearly or quite glabrous =Violet, Viola sagittata.=
8a. Flowers violet or blue (rarely white-flowered plants are found
with the typical blue-flowered ones) (Blue Violets) --9.
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Elsewhere in the archive
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account