Order 51. CAPRIFOLIÀCEÆ. (Honeysuckle Family.)
Shrubs, or rarely herbs, with opposite leaves, no (genuine) stipules, the calyx-tube coherent with the 2–5-celled ovary, the stamens as many as (one fewer in Linnæa, doubled in Adoxa) the lobes of the tubular or rotate corolla, and inserted on its tube.—Fruit a berry, drupe, or pod, 1–several-seeded. Seeds anatropous, with small embryo in fleshy albumen.
Tribe I. SAMBUCEÆ. Corolla wheel-shaped or urn-shaped, regular, deeply 5-lobed. Stigmas 3–5, sessile or nearly so. Inflorescence terminal and cymose.
[*] Dwarf herb, with stamens doubled and flowers in a capitate cluster.
1. Adoxa. Fruit a dry greenish drupe, with 3–5 cartilaginous nutlets. Cauline leaves a single pair and ternate.
[*][*] Shrubs, with stamens as many as corolla-lobes and flowers in broad compound cymes.
2. Sambucus. Fruit berry-like, containing three small seed-like nutlets. Leaves pinnate.
3. Viburnum. Fruit a 1-celled 1-seeded drupe, with a compressed stone. Leaves simple.
Tribe II. LONICEREÆ. Corolla tubular, often irregular, sometimes 2-lipped. Style slender; stigma capitate.
[*] Herbs, with axillary flowers.