This substance is now synthesized in the pharmaceutical industry and used in healing creams. The plant contains a substance called "allantoin", a cell proliferant that speeds up the healing process. Comfrey is especially useful in the external treatment of cuts, bruises, sprains, sores, eczema, varicose veins, broken bones etc, internally it is used in the treatment of a wide range of pulmonary complaints, internal bleeding etc. The root and the leaves are used, the root being more active, and they can be taken internally or used externally as a poultice. N=36 type (which is known from North America).Medicinal use of Comfrey: Comfrey is a commonly used herbal medicine with a long and proven history in the treatment of various complaints. This hybrid shows softer stem pubescence, slightly longer leaf base decurrence (on average), and blunter fornices than the 2 N=40 type of this hybrid has been collected in New England (with a 2 S. officinale was involved in the cross (see discussion under Two cytotypes of this hybrid are known, depending on which cytotype of recurved corolla lobes and lustrous black schizocarps). S. officinale it can additionally be distinguished by ascending corolla lobes and dull brown schizocarps (vs. corolla 9–14 mm long, red flower buds, calyx 3–5 mm long, and long, narrow papillae on the margins of the fornices). However, the hybrid differs in that it has a corolla 13–16 mm long, purple or pink flower buds, a calyx 5–7 mm long, and short, broad papillae on the margins of the fornices (vs. S. asperum in that the leaves are not decurrent on the stem (or infrequently shortly decurrent for a distance of less than 10 mm). Nyman is a very rare comfrey hybrid in New England known from There is one leaf per node along the stem There is a gradual change in appearance of the leaves from the base (or near the base) of the plant to those from further up on the stem, with leaves progressively changing as one moves higher on the stem (often becoming shorter, or less toothed/lobed, and/or with shorter petioles). The leaves are simple (i.e., lobed or unlobed but not separated into leaflets) The leaves are green, with an expanded blade and a leaf-like texture The leaves drop off in winter (or they whither but persist on the plant) The major veins form a net-like pattern due to splitting and rejoining The upper side of the leaf blade is relatively uniform in color the leaf blade is ovate (widest below the middle and broadly tapering at both ends).the leaf blade is oblong (rectangular but with rounded ends).The edge of the leaf blade is entire (has no teeth or lobes) the base of the leaf blade is cuneate (wedge-shaped, tapers to the base with relatively straight, converging edges), or narrow.the base of the leaf blade is cordate (heart-shaped, has rounded lobes at the base).The leaf has a distinct leaf stalk (petiole) The underside of the leaf is fuzzy or hairyĪlternate: there is one leaf per node along the stem The fruits do not have thorn-like defensive structuresįinal leaf segment length (compound lvs only)įinal leaf segment length to width ratio (compound lvs only)įinal leaf segment width (compound lvs only) The plant has axile placentation, in which the ovules are attached where the septa of a compound ovary are united, usually on the central axis, or to the septa themselves the ovary or fruit does not have a stipe. The fruit is a schizocarp (when dry it splits into sections, each holding one or more seeds) The fruit is dry but does not split open when ripe
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