Common Name: ROSE FAMILY
Habit: Annual to tree, glandular or not. Leaf: simple to palmately or pinnately compound, generally alternate; stipules free to fused (0), persistent to deciduous. Inflorescence: cyme, raceme, panicle, cluster, or flowers 1; bractlets on pedicel ("pedicel bractlets") generally 0--3(many), subtended by bract or generally not. Flower: generally bisexual, radial; hypanthium free or fused to ovary, saucer- to funnel-shaped, subtending bractlets ("hypanthium bractlets") 0--5, alternate sepals; sepals generally 5; petals generally 5, free; stamens (0,1)5--many, anther pollen sacs generally 2; pistils (0)1--many, simple or compound, ovary superior to inferior, styles 1--5. Fruit: 1--many per flower, achene (fleshy-coated or not), follicle, drupe, or pome with generally papery core, occasionally drupe-like with 1--5 stones. Seed: generally 1--5 (per fruit, not per flower).
Genera In Family: 110 genera, +- 3000 species: worldwide, especially temperate; many cultivated for ornament, fruit, especially Cotoneaster, Fragaria, Malus, Prunus, Pyracantha, Rosa, Rubus. Note: Number of teeth is per leaf or leaflet, not per side of leaf or leaflet, except in Drymocallis.
eFlora Treatment Author: Daniel Potter & Barbara Ertter, family description, key to genera, treatment of genera by Daniel Potter, except as noted
Scientific Editor: Daniel Potter, Thomas J. Rosatti.

Habit: Shrub. Leaf: +- clustered on short-shoots, simple, persistent or drought-deciduous, generally deeply 3--9-lobed, generally with +- sunken glands adaxially, margin generally not toothed, +- strongly rolled under; bases persistent, overlapping, sheathing stem. Inflorescence: flowers generally 1 on short-shoots. Flower: hypanthium +- funnel-shaped, outside hairy, partly glandular or not, bractlets small, lanceolate; sepals 5, overlapping; petals 5, white to cream [yellow]; stamens (15)20--80(125); pistils 1--7(10), simple. Fruit: achene, +- fusiform to oblong, styles persistent, +- hairy.
Etymology: (Frederick T. Pursh, North American botanist, author of Flora Americae Septentrionalis, 1774--1820)
eFlora Treatment Author: Brian Vanden Heuvel & Thomas J. Rosatti
Unabridged Reference: Koehler & Smith 1981 Madroño 28:13--25; Henrickson 1986 Phytologia 60:468

Common Name: BITTERBRUSH
Habit: Plant 2--25(40) dm. Leaf: lobes 3(5), central generally spiny at tip, lateral from generally above middle. Flower: hypanthium +- 2.5--5 mm; sepals 2--4 mm; petals 4--8 mm, +- obovate; pistils 1--2. Fruit: canescent; style 5--7(10) mm, not plumose.