Herbs, shrubs or trees; leaves alternate, verticilliate, simple or compound, without stipules, the petioles thickened and dilated at the base; flowers umbellate, paniculate or racemose, the calyx-tube adnate to the ovary, the petals sometimes cohering together, epigynous, not inflexed; fruit a few-celled drupe.
I. Aralia. (Tourn.) L.
1. A. nudicaulis. L. Wild Sarsaparilla. II. Fatsia. Dene and Planch.
1. F. horrida. (Sm.) B. and H. Devil's Club.
A large family of herbs, some innocent, others very poisonous; leaves alternate, mostly compound, the petioles expanded or sheathing at the base; flowers small in umbels and umbellets, usually subtended by an involucre; fruit dry, of two mericarps cohering by their inner face, separating when ripe, each carpel ribbed lengthwise, the tubes between the ribs containing aromatic coloured oil.
I. Osmorhiza. Raf.
1. O. obtusa. (C. and R.) Fernald. Crisp-leaved Sweet Cicely.
2. O. divaricata. Nutt. Western Sweet Cicely. II. Zizia. Koch.
1. Z. cordata. (Walt.) DC. Heart-leaved Alexanders.
III. Ligusticum. L.
1. L. apiifolium. Gray. Fern-leaved Lovage.
2. L. Grayi. C. and R. Gray's Lovage.
IV. Lomatium. Raf.
1. L. macrocarpum. (Nutt.) C. and R. Large-seeded Parsley.
2. L. triternatum. (Pursh.) C. and R. Narrow-leaved Parsley.
3. L. Martindalei var. angustatum. C. and R. Martindale's Parsley.
V. Heracleum. L.
I. H. lanatum. Michx. Cow Parsnip. VI. Leptotaenia. Nutt.
I. L. multifida. Nutt. Cut-leaved Angelica.
Shrubs or trees with bitter tonic bark; leaves opposite or alternate, simple, usually entire, pinnately veined, without stipules; flowers perfect, cymose or capitate, rarely solitary, with or without an involucre, petals distinct, as many as the calyx-lobes and alternate with them, inserted on the margin of the epigynous disk; fruit drupelets covered with the remains of the calyx.
I. Cornus. (Tourn.) L.
1, C. canadensis. L. Bunchberry.
2. C. stolonifera. Michx. Red-osier Dogwood.
Subclass II. Metachlamydece