Rosaceae - Rose Family
Contents English Names Index
 

Rosaceae, the rose family, includes about 3,100 species and 107 genera worldwide, and includes many other type of plants than roses alone. It also houses many of the fruits that the world loves to eat, and some of the prettiest flowers. They vary from the simple strawberry flower to the complex roses. The flowers are radially symmetrical, typically with 5 sepals united at the base, 5 petals arising from the top of a cup- or saucer-like structure, numerous stamens in several whorls, and 1 compound or several simple ovaries. The fruits are achenes (small seeds), pomes (eg. apples), drupes (eg. cherries) or aggregations of drupelets (raspberries).
Rosaceae plants grow as trees, shrubs and perennial herbs. They also occur as climbing plants, like vines, but are often self sufficient, needing no host to cling to and climb up. Thorns often are seen on these types of plants. They aid in defense and also as a clasping technique. Rosaceae leaves are usually simple and alternate, with some exceptions. When compound, the leaflets are opposite. Stipules, leaflike appendages at the base of the leafstalk, are often found, with exception of the genus Spiraea.

 
 
Guide to Identify Presented Species and Genera of the Rose Family
LOW HERBS WITH SMALL STRAWBERRIES, WHITE FLOWERS
Fragaria virginiana - Wild Strawberry
Low plant with creeping stems. Wooded, gravelly areas, plains-montane.
Flowers white, regular. Petals 5, white, round, 6-13 mm long.
Leaves divided into 3 toothed leaflets
, middle end tooth smaller.
HERBS WITH NODDING, BELL-LIKE, PURPLE FLOWERS
Geum rivale - Purple Avens
Hairy plant, 40-60 cm tall, reddish. Stream banks, bogs, and wet meadows.
Flowers bell-shaped, nodding, purplish, 10-15 mm long, few in open cluster.
Leaves pinnately divided into 7-15 toothed leaflets
, the 3 at the end larger.
HERBS WITH BUTTERCUP-LIKE FLOWERS, YELLOW OR CREAM
Geum macrophyllum - Large-leaved Avens
Stems 30-70 cm tall, spreading-stiff-hairy. Moist woods or meadowland.
Flowers yellow, 15-20 mm wide, with 5 rounded petals. Sepals bent back.
Leaves pinnately divided into 5-9 main leaflets, the final leaflet much larger.
Potentilla argentea - Silvery Cinquefoil
Stems short-grayish-woolly, 15-30 cm tall. Dry areas.
Flowers c. 15 mm wide. Sepals flat-hairy, petals not touching.
Leaves gray-woolly below, the 5 leaflets toothed, 1-2 cm long.
Potentilla recta - Erect or Sulphur or Rough Cinquefoil
Plant 30-80 cm tall, very leafy, branched on upper parts. Weed.
Flowers pale yellow. Petals heart-shaped, 9-12 mm long.
Leaves several on stems, divided into 5-7 leaflets, saw-toothed.
TALLER SHRUBS WITH WHITE FLOWERS AND ROUNDED FRUITS
Amelanchier alnifolia - Saskatoon Serviceberry
Shrub 1-5 m tall with round, purple-black fruits, 10-14 mm long. Open woods.
Flowers white, 2-3 cm wide, with 5 oblong petals and usually 5 styles.
Leaves alternate, oval to nearly round, 2-4 cm long, sharply small-toothed.
Physocarpus malvaceus - Mallow Ninebark
Shrub 50-100 cm tall. Fruits are follicles, in pairs, reddish, about 5 mm long.
Flowers white, c. 10 mm wide, in dense, round clusters, with 5 round petals.
Leaves alternate, 2-6 cm long, ovate to heart-shaped, with 3-5 toothed lobes.
Prunus virginiana - Choke Cherry
Shrub or small tree 1-4 m tall. Fruits are cherries, red to purple or black.
Flowers white, 10-12 mm wide, in dense, elongated clusters. Petals 5, round.
Leaves alternate, elliptic, finely sharp-toothed, 4-10 cm long, pointed at tips.
MEDIUM SHRUBS WITH RASPBERRY-LIKE FRUITS, WHITE FLOWERS
Rubus idaeus - Wild Red Raspberry
Stems prickly, widely branching, 100-150 cm tall. Rocky areas, montane zone.
Flowers small, white. Petals oblong, 4-6 mm long. Sepals longer than petals.
Leaves divided into 3-5 leaflets, double-toothed, white-hairy beneath.
Rubus parviflorus - Thimbleberry
Shrub 50-200 cm tall. Open to wooded, moist to dry areas in mountains.
Flowers white, few in open clusters. Petals 5, broadly oval, 15-20 mm long.
Leaves large, 10-20 cm wide, with heart-shaped bases, palmately lobed.
SMALL SHRUBS WITHOUT BERRIES
Pentaphylloides floribunda - Shrubby Cinquefoil
Spreading shrub with wooden stems. Rocky areas, plains-subalpine.
Flowers yellow, regular, clustered on branches. Petals 5, round, 8-13 mm long.
Leaves small, crowded on stems
, divided into 5-7 narrow segments.
Spiraea betulifolia - White Spiraea
Spreading shrub, 40-70 cm tall. Open or wooded sites, foothills-subalpine.
Flowers white or pinkish, about 5 mm wide, in dense, flat-topped clusters.
Leaves alternate, 2-7 cm long, oval, coarse-toothed toward tip.
Alphabetical listing with links to presented species of the Rose family:
     
Scientific Name English Name Swedish Name
 

 

 
Amelanchier
Fragaria
Geum
Pentaphylloides
Physocarpus
Potentilla
Prunus
Rubus
Spiraea
Serviceberry
Strawberry
Avens
Shrubby Cinquefoil
Ninebark
Cinquefoil
Cherries, Plums
Raspberry, Thimbleberry
Spiraea
Häggmisplar
Smultron
-
Nejlikrötter
Tokar
-
-
Fingerörter
Prunusar
-
Rubusar
Spireor
-
sdf sdfsdfsdf sdfsdfsdfsdf sdf sdfgdfgdfgdffdfg df hdfshsdfhsdfgdfgdfgdsf dfg dfg dfgdfg sddfgdf dsfg
Copyright © Plant-Life.org
Contents English Names Index