Sanguisorba minor Scop.
Family: Rosaceae
small burnet,  more...
Sanguisorba minor image
Keir Morse  
Perennial herb 20 cm - 0.7 m tall Leaves: pinnately compound, stalked (with stipules), with well developed lower leaves and increasingly smaller upper leaves, arching to form a mounded rosette, bearing seven to seventeen leaflets. Inflorescence: a nearly spherical to egg-shaped cluster, 1 - 3 cm across, 0.8 - 2 cm long, with bisexual or male flowers near base and female flowers near tip. Flowers: subtended by bracts, lacking petals but having four green or brown sepals (2.5 - 5 mm long), two pistils, and many drooping stamens. Fruit: 2 semi-egg-shaped achenes enclosed in a four-angled calyx tube. Leaflets: 5 - 20 mm long, egg-shaped to rounded, with three to seven sharp teeth per side.

Similar species: Sanguisorba canadensis differs by having 2 cm or longer main leaflets, one pistil, four erect stamens, and one achene.

Flowering: late May to early September

Habitat and ecology: This species was introduced from Eurasia. In the Chicago Region, it has been found growing on a limestone barren and in turf along the edge of a cemetary.

Occurence in the Chicago region: non-native

Etymology: Sanguisorba comes from the Latin words sanguis, meaning blood, and sorbeo, meaning "to soak up," referring to the once-thought ability of the plant to stop bleeding by contracting blood vessels. Minor means smaller.

Author: The Morton Arboretum

Perennial from a caudex-like rhizome; stems 2-7 dm; lower lvs numerous and well developed, with usually 7-17 lfls, the upper lvs progressively reduced; lfls ovate to rotund, 5-20 mm, with 3-7 sharp teeth on each side; heads several on elongate peduncles, short-ovoid to globose, 8-20 mm; fls subtended by ciliate bracts, the lower ones perfect or staminate, the upper pistillate; sep green or brown, 2.5-5 mm, the inner pair broader than the outer; stamens numerous, the long filaments drooping; pistils 2; mature hypanthium 5 mm, very rough between the wings; achenes 2, semi-ovoid; 2n=28, 56. Native of Eurasia, established as a weed along roadsides and in fields and waste places here and there in our range. May, June. (Poterium sanguisorba)

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
Duration: Perennial Nativity: Non-Native Lifeform: Forb/Herb General: Introduced perennial, 25-70 cm tall; stems simple to branched; herbage sparsely pilose to glabrous; caudex woody, often branched; taproot stout. Leaves: Basal (mostly) and cauline, alternate, pinnate, basal and lower cauline blades 10-20 cm long, leaflets 11-21, borne on petiolules, the lower ones alternate, the upper ones opposite, ovate to fan-shaped, 1-2.5 cm long, margins coarsely crenate, upper cauline blades progressively reduced, the leaflets often folded, lanceolate, margins serrate; stipules simple on the lower leaves, 3-lobed on the upper ones; blades petiolate. Flowers: Inflorescence an open, branched cyme; flowers few to several, about 1.5 cm wide, showy; hypanthium silky and puberulent; bractlets lanceolate, 5-6 mm long; sepals triangular, 5-6 mm long, villous, apex acute; petals broad, nearly orbicular, exceeding the sepals, rose- purple to deep red, apex notched; stamens 20-30; pistils numerous, the style usually longer than the achene; flowers July-October. Fruits: Achene, enclosed in a 4-angled, dry, thick hypanthium (fruiting hypanthium), this pear-shaped, 3-5 mm long, prominently ridged with papillae between the winged angles. Ecology: Disturbed habitats, meadows, rocky soils; 1500-2600 m (5000-8500 ft); Apache, Cochise, Coconino, Gila, Mohave, Pima, and Yavapai counties; eastern and western Canada, northeastern, western, and southwestern U.S. Notes: na Editor: Springer et al. 2008
Sanguisorba minor image
Sue Carnahan  
Sanguisorba minor image
Sue Carnahan  
Sanguisorba minor image
Sue Carnahan  
Sanguisorba minor image
Sanguisorba minor image
Charles Webber  
Sanguisorba minor image
Charles Webber  
Sanguisorba minor image
Sanguisorba minor image
Charles Webber  
Sanguisorba minor image
Keir Morse  
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Charles Webber  
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image
Sanguisorba minor image