Burke: Rubus ulmifolius vs. Rubus pubescens

	Rubus ulmifolius	Rubus pubescens
	elm-leaf blackberry	dwarf red blackberry, dwarf red blackberry raspberry, red raspberry
Habit		Unarmed, soft-hairy perennial from rhizomes, the herbaceous, leafy flowering stems up to 1 m. long, reclining, often rooting at the nodes.
Leaves		Leaves with oblanceolate, entire stipules 1 cm. long, the blades trifoliate; leaflets short-petiolate, ovate, 2-6 cm. long, doubly serrate.
Flowers		Flowers 1-2 on short, erect, leafy shoots, the inflorescence with stalked glands; calyx soft-hairy, the 5 lobes lanceolate, 3-5 mm. long, entire, reflexed; petals 5, white or greenish-white, erect, oblong-lanceolate, 5-8 mm. long; stamens numerous, the filaments broad and flat, narrowed abruptly near the tip; pistols 20-30, glabrous.
Fruits		Drupelets deep red, weakly coherent, attached to the receptacle; fruit up to 1 cm. broad.

	Rubus ulmifolius	Rubus pubescens
Flowering time	May-July	May-July
Habitat	Fields, thickets, forest edge, and other disturbed areas.	Stream banks and moist woods to clearings where moderately dry, middle elevations in the mountains.
Distribution	Occurring west of the Cascades crest in Washington; southwestern British Columbia to California and Nevada; also in New Jersey. [WildflowerSearch map] [BONAP county map]	Occurring east of the Cascades crest in northern Washington; Alaska to Washington, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America. [WildflowerSearch map] [BONAP county map]
Origin	Introduced Europe and northern Africa	Native
Conservation status	Not of concern	Not of concern
Sibling taxa	R. allegheniensis, R. arcticus, R. bifrons, R. idaeus, R. laciniatus, R. lasiococcus, R. leucodermis, R. nigerrimus, R. nivalis, R. parviflorus, R. pedatus, R. pensilvanicus, R. pubescens, R. spectabilis, R. ursinus, R. vestitus	R. allegheniensis, R. arcticus, R. bifrons, R. idaeus, R. laciniatus, R. lasiococcus, R. leucodermis, R. nigerrimus, R. nivalis, R. parviflorus, R. pedatus, R. pensilvanicus, R. spectabilis, R. ulmifolius, R. ursinus, R. vestitus
Web links	Local floras: CA, OR, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: BC, WA Local Web sites: Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Rubus ulmifolius

Rubus pubescens

elm-leaf blackberry

dwarf red blackberry, dwarf red blackberry raspberry, red raspberry

Habit

Unarmed, soft-hairy perennial from rhizomes, the herbaceous, leafy flowering stems up to 1 m. long, reclining, often rooting at the nodes.

Leaves

Leaves with oblanceolate, entire stipules 1 cm. long, the blades trifoliate;

leaflets short-petiolate, ovate, 2-6 cm. long, doubly serrate.

Flowers

Flowers 1-2 on short, erect, leafy shoots, the inflorescence with stalked glands;

calyx soft-hairy, the 5 lobes lanceolate, 3-5 mm. long, entire, reflexed;

petals 5, white or greenish-white, erect, oblong-lanceolate, 5-8 mm. long;

stamens numerous, the filaments broad and flat, narrowed abruptly near the tip; pistols 20-30, glabrous.

Fruits

Drupelets deep red, weakly coherent, attached to the receptacle;

fruit up to 1 cm. broad.

Rubus ulmifolius

Rubus pubescens

Flowering time

May-July

Habitat

Fields, thickets, forest edge, and other disturbed areas.

Stream banks and moist woods to clearings where moderately dry, middle elevations in the mountains.

Distribution

Occurring west of the Cascades crest in Washington; southwestern British Columbia to California and Nevada; also in New Jersey.

[WildflowerSearch map]

[BONAP county map]

Occurring east of the Cascades crest in northern Washington; Alaska to Washington, east to the Rocky Mountains, northern Great Plains, Great Lakes region, and northeastern North America.

[WildflowerSearch map]

[BONAP county map]

Origin

Introduced Europe and northern Africa

Native

Conservation status

Not of concern

Sibling taxa