The Plants of Michigan - LightNovelsOnl.com
You're reading novel online at LightNovelsOnl.com. Please use the follow button to get notifications about your favorite novels and its latest chapters so you can come back anytime and won't miss anything.
30b. Princ.i.p.al branches of the umbel 7 or more; fruit ovate to broadly elliptical (summer) --31.
31a. Native plants, growing in swamps (5-15 dm. high) =Hemlock Parsley, Conioselinum chinense.=
31b. Introduced plants, in waste places and along roads --32.
32a. Stems conspicuously spotted with purple (5-15 dm. high) =Poison Hemlock, Conium maculatum.=
32b. Stems not spotted with purple (2-5 dm. high) =Caraway, Carum carvi.=
CORNACEAE, the Dogwood Family
Trees, shrubs, or herbs, with alternate leaves and small flowers in rather crowded rounded or flattened cl.u.s.ters; sepals 4, minute; petals and stamens each 4; ovary inferior, ripening into a berry. In one genus the flowers are minute and greenish, with 5 sepals and petals minute or none.
1a. Leaves alternate --2.
1b. Leaves opposite --3.
2a. Flowers white, conspicuous, in flattened cl.u.s.ters (shrubs 2-4 m. high; flowers in late spring) =Dogwood, Cornus alternifolia.=
2b. Flowers greenish, inconspicuous, in small axillary cl.u.s.ters (tree; flowers in spring) =Sour Gum, Nyssa sylvatica.=
3a. Flower cl.u.s.ters small and dense, surrounded by a showy involucre of 4 bracts, resembling a corolla of 4 petals --4.
3b. Flowers in open flattened cl.u.s.ters, without petal-like involucre (shrubs 1-4 m. high; late spring) --5.
4a. Herbaceous, 3 dm. high or less (flowers in late spring) =Dwarf Dogwood, Cornus canadensis.=
4b. Tall shrub or tree (flowers in late spring) =Flowering Dogwood, Cornus florida.=
5a. Leaves distinctly p.u.b.escent beneath with woolly or spreading hairs --6.
5b. Leaves smooth beneath, or p.u.b.escent with short appressed hairs --9.
6a. Leaves rough above; fruit white =Dogwood, Cornus asperifolia.=
6b. Leaves smooth or finely soft-hairy above --7.
7a. Leaves at least twice as long as wide; branches brownish or purplish --8.
7b. Leaves less than twice as long as wide; branches greenish; fruit blue =Dogwood, Cornus circinata.=
8a. Branches purplish; fruit blue =Dogwood, Cornus amomum.=
8b. Branches brownish; fruit white =Dogwood, Cornus baileyi.=
9a. Branches bright red or reddish-purple =Dogwood, Cornus stolonifera.=
9b. Branches grayish =Dogwood, Cornus paniculata.=
ERICACEAE, the Heath Family
Herbs or shrubs, frequently with evergreen leaves; sepals 4-5; corolla regular, with 4-5 petals; stamens as many or twice as many; ovary 3-10-celled, with 1 style.
1a. Plants without green color; leafless or with scale leaves only --2.
1b. Plants with green leaves --4.
2a. Flowers solitary (1-2 dm. high; summer) =Indian Pipe, Monotropa uniflora.=
2b. Flowers in cl.u.s.ters --3.
3a. Petals united into a bell-shape corolla (3-9 dm. high; summer) =Pine Drops, Pterospora andromedea.=
3b. Petals all separate (1-3 dm. high; summer) =Beech Drops, Monotropa hypopitys.=
4a. Leaves all basal; herbaceous plants with terminal racemes (1-4 dm. high; summer) (s.h.i.+n-leaf) --5.
4b. Stem-leaves present --12.
5a. Style straight --6.
5b. Style bent near the apex --8.
6a. Racemes one-sided, the flowers all turned in one direction (flowers white or greenish-white) --7.
6b. Raceme regular, the flowers not all pointing in the same direction (flowers white or pink) =s.h.i.+n-leaf, Pyrola minor.=
7a. Flowers numerous in each raceme =s.h.i.+n-leaf, Pyrola secunda.=
7b. Flowers only 3-7 in each raceme =s.h.i.+n-leaf, Pyrola seconda var. obtusata.=
8a. Flowers pink or purple --9.
8b. Flowers white or greenish --10.
9a. Leaves cordate at base =s.h.i.+n-leaf, Pyrola asarifolia.=
9b. Leaves rounded at base, not cordate =s.h.i.+n-leaf, Pyrola asarifolia var. incarnata.=
10a. Leaves s.h.i.+ning on the upper side; sepals one-third as long as the petals =s.h.i.+n-leaf, Pyrola americana.=
