Figures or words separated by a short dash (–) indicate the extremes of variation, as "5–10´´ long, few–many-flowered," i.e. varying from 5 to 10 lines in length, and with from few to many flowers.
BOTANY
OF THE
NORTHERN UNITED STATES.
SERIES I.
PHÆNOGAMOUS or FLOWERING PLANTS.
Vegetables bearing proper flowers, that is, having stamens and pistils, and producing seeds, which contain an embryo.
Class I. DICOTYLEDONOUS or EXOGENOUS PLANTS.
Stems formed of bark, wood, and pith; the wood forming a layer between the other two, increasing, when the stem continues from year to year, by the annual addition of a new layer to the outside, next the bark. Leaves netted-veined. Embryo with a pair of opposite cotyledons, or rarely several in a whorl. Flowers having their parts usually in fives or fours.
Subclass I. ANGIOSPÉRMÆ.
Pistil consisting of a closed ovary, which contains the ovules and forms the fruit. Cotyledons only two.