The Manual of the Botany of the Northern United States. Asa Gray
of the (divided) ovary twice as many as the styles, sepals, &c. Linaceæ, 101
Shrubs or trees.
Leaves 3-foliolate, pellucid-punctate. Ptelea, in Rutaceæ, 107
Leaves palmately veined and fruit 2-winged, or pinnate and fruit a berry. Sapindaceæ, 115
Leaves pinnately veined, simple, not punctate.
Calyx not minute; pod colored, dehiscent; seeds enclosed in a pulpy aril. Celastraceæ, 109
Calyx minute; fruit a berry-like drupe. Ilicineæ, 107
Ovules (and usually seeds) several or many in each cell.
Stipules between the opposite and simple leaves. Elatinaceæ, 91
Stipules between the opposite and compound leaves (but they are caducous). Staphylea, in Sapindaceæ, 118
Stipules none when the leaves are opposite.
Stamens 5, monadelphous in a 10-toothed tube or cup; leaves simple, all radical. Galax, in Diapensiaceæ, 326
Stamens 10, monadelphous at the base. Leaflets 3, inversely heart-shaped. Oxalis, in Geraniaceæ, 105
Stamens distinct, free from the calyx.
Style 1, undivided. Ericaceæ, 303
Styles 2–5, separate. Caryophyllaceæ, 82
Stamens distinct, inserted on the calyx.
Styles 2 (or 3), or splitting into 2 in fruit. Saxifragaceæ, 168
Style 1; pod in the calyx, 1-celled. Lythraceæ, 184
2. Calyx-tube adherent to the ovary, at least to its lower half.
Tendril-bearing and often succulent herbs. Cucurbitaceæ, 194
Not tendril-bearing.
Ovules and seeds more than one in each cell.
Ovary 1-celled, many-ovuled from the base. Portulacaceæ, 90
Ovary 1-celled, with 2 or 3 parietal placentæ. Saxifragaceæ, 168
Ovary 2–several-celled.
Anthers opening by pores at the apex; style 1. Melastomaceæ, 183
Anthers not opening by pores.
Stamens on a flat disk which covers the ovary. Celastraceæ, 109
Stamens inserted on the calyx.
Eight or four (rarely five); style 1. Onagraceæ, 186
Five or ten; styles 2–3, distinct. Saxifragaceæ, 168
Ovules and seeds only one in each cell.
Stamens 10 or 5 (instead of many),— rarely in Cratægus, in Rosaceæ, 165
Stamens 2 or 8; style 1; stigma 2–4-lobed; herbs. Onagraceæ, 186
Stamens 4 or 8; aquatics; styles or sessile stigmas 4. Halorageæ, 180
Perfect stamens 4; styles 2; shrub. Hamamelideæ, 179
Stamens 4; style and stigma 1; chiefly shrubs. Cornaceæ, 213
Stamens 5; flowers in umbels, or rarely in heads.
Fruit dry, splitting in two at maturity; styles 2. Umbelliferæ, 193
Fruit berry-like; styles 2–5, separate or united. Araliaceæ, 212
Division II. GAMOPETALOUS calyx and corolla both present; the latter with its petals united more or less into one piece.
A. Stamens more numerous than the lobes of the corolla.
Ovary 1-celled with one parietal placenta. Leguminosæ, 122
Ovary 1-celled with two parietal placentæ. Adlumia, &c., in Fumariaceæ, 60
Ovary 1-celled with the ovules at the centre or base. Styracaceæ, 333
Ovary 2-celled with a single ovule in each cell. Polygalaceæ, 120
Ovary 3–many-celled.
Stamens free or nearly free from the corolla; style single. Ericaceæ, 309