Rosa canina (fruit)

Nomenclature

Rosa canina L.   Rosaceae  
Standardized common name (English): dog rose

Botanical Voucher Specimen

Source: MOBOT, Tropicos.org

Organoleptic Characteristics

Rose hips possess a pleasant, sweet, acidulous taste. Source: United States Dispensatory (1918)

Macroscopic Characteristics

Rosa canina ... is distinguished by its prickly stem and petioles, and ovate, smooth, rigid leaves. It has white or pale red flowers, having usually five obcordate fragrant petals. The fruit consists of a fleshy, hollow receptacle, bearing on its inner surface a number of hairy achenes. The ripe fruit, which is usually employed in the fresh condition, is ovoid, smooth, shiny and of a reddish color. The summit is crowned with 5-calyx teeth. Source: United States Dispensatory (1918)

Microscopic Characteristics

Fragment of a unicellular thick walled trichome seen under polarized light observed at 400x with Acidified Chloral Hydrate Glycerol Solution. Source: Elan M. Sudberg, Alkemist Laboratories	Rosette of calcium oxalate observed at 400x with Acidified Chloral Hydrate Glycerol Solution. Source: Elan M. Sudberg, Alkemist Laboratories

High Performance Thin Layer Chromatographic Identification

Rosa canina HPTLC ID - Vanillin/Sulfuric Acid Visible Light Rosehips (fruit) (Rosa canina) Lane Assignments Lanes, from left to right (Track, Volume, Sample): 5 μL Ascorbic Acid ~0.1% in CH3OH 3 μL Rosa canina-1 (fruit) 5 μL Rosa canina-1 (fruit) 4 μL Rosa canina-2 (fruit) 4 μL Rosa canina-2 (fruit) 4 μL Rosa canina-3 (fruit) 4 μL Rosa canina-4 (fruit) 5 μL Ascorbic Acid ~0.1% in CH3OH Reference materials used here have been authenticated by macroscopic, microscopic &/or TLC studies according to the reference source cited below held at Alkemists Laboratories, Costa Mesa, CA.  Stationary Phase Silica gel 60, F254, 10 x 10 cm HPTLC plates  Mobile Phase toluene: acetone: HCOOH [6/3/1]  Sample Preparation Method 0.3g+3mL 70% grain EtOH sonicate/heat @~50° C ~ 1/2 hr  Detection Method Vanillin/H2SO4 Reagent -> 110° C 5 min -> visible light  Reference see Adapted from European Pharmacopoeia 5.0 2005 Source: Elan M. Sudberg, Alkemist Laboratories