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Apocynum androsaemifolium
| Apocynum androsaemifolium: Flower
Photo by Derrick Ditchburn. |
|
| Common name: |
Spreading Dogbane |
Family: |
Apocynaceae |
| Author: |
L. |
Botanical references: |
43, 200 |
| Synonyms: |
|
| Known Hazards: |
All parts of the plant are poisonous[1, 62]. |
| Range: |
Northern N. America. |
| Habitat: |
Open woodland, woodland edges etc, usually on drier soils[43, 62]. |
| Edibility Rating (1-5): |
0 | Medicinal Rating (1-5): | 2 |
| Other Possible Synonyms: | From various places across the web, may not be correct. See below. |
| A. ambigens[B]
A. androsaemifolium ssp. pumilum[B]
A. androsaemifolium var. glabrum[B]
A. androsaemifolium var. griseum[B]
A. androsaemifolium var. incanum[B]
A. androsaemifolium var. intermedium[B]
A. androsaemifolium var. pumilum[B]
A. androsaemifolium var. tomentellum[B]
A. androsaemifolium var. woodsonii[B]
A. pumilum[B]
A. pumilum var. rhomboideum[B]
A. scopulorum[B]
|
| Other Common Names: | From various places around the Web, may not be correct. See below. |
| Amerikanischer [E], Bitter Root [H], Canadian Hemp [E], Canadian Hemp, Dogbane [S], Chanvre Du Canada [E], Dogbane [E,S], Dogbane, Spreading Or Common [S], Dogsbane [H], Fly-Trap [H], Milkweed [H], Spreading Dogbane [L,B,E,P], Vliegenwurger [E], |
| Systematics: | From a USDA Plants Database |
|
Order: Gentianales. Dogbane family
|
| Other Range Info: |
From the Ethnobotany Database |
|
France; Hanf; Netherlands; Us; Us(Amerindian)
|
| Noxious, Invasive and Injurious Weeds | From USDA PLANTS database, Weeds Australia
, DEFRA Injurious Weeds | | Listed as noxious/invasive for: USA Invasive. |
Physical Characteristics
Perennial growing to 0.6m by 1m . It is hardy to zone 4. It is in flower in July. The flowers are hermaphrodite (have both male and female organs).
We rate it 0/5 for edibility and
2/5 for medicinal use.
The plant prefers light (sandy), medium (loamy) and heavy (clay) soils and requires well-drained soil.
The plant prefers acid, neutral and basic (alkaline) soils and can grow in very acid soil.
It can grow in full shade (deep woodland) semi-shade (light woodland) or no shade.
It requires dry or moist soil.
Habitats and Possible Locations
Woodland, Sunny Edge, Dappled Shade, Shady Edge, Deep Shade.Edible Uses
None known
Medicinal Uses
Disclaimer
Cardiotonic; Cathartic; Contraceptive; Diaphoretic; Diuretic; Emetic; Expectorant; VD.
Spreading dogbane is an unpleasantly bitter stimulant irritant herb
that acts on the heart, respiratory and urinary systems, and also on the
uterus[238]. It was widely employed by the native North American Indians who
used it to treat a wide variety of complaints including headaches,
convulsions, earache, heart palpitations, colds, insanity and dizziness[257].
It should be used with great caution, and only under the supervision of a
qualified practitioner if taking this plant internally[21, 238]. The root
contains cymarin, a cardioactive glycoside that is toxic to ruminants[222].
The root is cardiotonic, cathartic, diaphoretic, diuretic, emetic and
expectorant[1, 4, 21, 61, 222]. It has a powerful action in slowing the pulse
and also has a very strong action on the vaso-motor system, it is rather an
irritant to the mucous membranes though, so some people cannot tolerate
it[4].
The juice of the fresh root has been used in the treatment of syphilis[207].
The sap of the plant has been applied externally to get rid of warts[257].
The roots were boiled in water and the water drunk once a week in order to
prevent conception[213].
The green fruits were boiled and the decoction used in the treatment of
heart and kidney problems and for the treatment of dropsy[213]. This
preparation can irritate the intestines and cause unpleasant
side-effects[213].
Other Uses
Fibre; Latex.
The bark yields a good quality fibre that is used for making twine,
bags, linen etc[4, 99, 155, 257]. It is inferior to A. cannabinum[99]. The
fibre is finer and stronger than cotton[207]. It can be harvested after the
leaves fall in the autumn but is probably at its best as the seed pods are
forming[169].
The plant yields a latex, which is a possible source of rubber[46, 61]. It
is obtained by making incisions on the stem and resembles indiarubber when
dry[4].
Cultivation details
Prefers an acid peaty soil[1] but it succeeds in sun or shade in most
well-drained soils and climates[169, 200].
A very ornamental plant[1], but it can be invasive[200].
The flowers the flowers secrete a sweet liquid that is very attractive to
flies[4]. The flies are then imprisoned by their proboscis which becomes
trapped between the short filaments of the stamens[207].
Propagation
Seed - best sown as soon as it is ripe in late summer and overwintered
outdoors. The seed requires a period of cold stratification if it is to
germinate well[238]. Prick out the seedlings when large enough to handle and
grow them on in a cold frame for their first winter, planting out in late
spring of the following year[K].
Division in spring just before active growth begins[200]. Plants can also be
divided in the autumn[238].
Suppliers
For more details of plant suppliers please see our Suppliers Page which lists many more places to look.
PFAF Web Pages
This plant is mentioned in the following web pages
Web References
- Details of Medicinal Uses, Habitats, etc. in M. Grieve A Modern Herbal (1931) [4]
- [H] Details of Scandanavian and European Common names in Henriette's names database
- [E] Ethnobotany Data
(common names, uses, countries) from the Ethnobotany Database.
- [V] Images
from the Vascular Plant Image Gallery of the Texas A&M Bioinformatics Working Group.
- [B] Data
(Latin & Common names, other references) from the BONAP's Synonymized Checklist of the Vascular Flora of the United States, Puerto Rico, and the Virgin Islands.
- [S] SW USA Dist. Maps
from the Southwest School of Botanical Medicine
- [S] Image
from the Southwest School of Botanical Medicine
- [G] Data
(Common Names, Uses, Distribution) from the USDA/ARS NPGS's GRIN taxonomic database.
- [C] Taxon data.
from the CalFlora database.
- Images
from the CalPhoto database.
- [PHARM] Phytochemical Data
(common names, uses, countries) from Dr Duke's Phytochemical Database.
- [P] Data.
(uses, distribution, wetland) from the USDA'a Plants database.
- [S] Image
from the Southwest School of Botanical Medicine
- [HP] Links, Photos, Suppliers from Hortiplex Plant Database
References for the family Apocynaceae.
See the PFAF Links Pages for other sources.
Also try Photos and info from the The Plants Database which has 14,000 images.
[K] Ken Fern
Notes from observations, tasting etc at Plants For A Future and on field trips.
[1] F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951 Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaces in 1992 by a new dictionary (see [200]).
[4] Grieve. A Modern Herbal. Penguin 1984 ISBN 0-14-046-440-9 Not so modern (1930's?) but lots of information, mainly temperate plants.
[21] Lust. J. The Herb Book. Bantam books 1983 ISBN 0-553-23827-2 Lots of information tightly crammed into a fairly small book.
[43] Fernald. M. L. Gray's Manual of Botany. American Book Co. 1950 A bit dated but good and concise flora of the eastern part of N. America.
[46] Uphof. J. C. Th. Dictionary of Economic Plants. Weinheim 1959 An excellent and very comprehensive guide but it only gives very short descriptions of the uses without any details of how to utilize the plants. Not for the casual reader.
[61] Usher. G. A Dictionary of Plants Used by Man. Constable 1974 ISBN 0094579202 Forget the sexist title, this is one of the best books on the subject. Lists a very extensive range of useful plants from around the world with very brief details of the uses. Not for the casual reader.
[62] Elias. T. and Dykeman. P. A Field Guide to N. American Edible Wild Plants. Van Nostrand Reinhold 1982 ISBN 0442222009 Very readable.
[99] Turner. N. J. Plants in British Columbian Indian Technology. British Columbia Provincial Museum 1979 ISBN 0-7718-8117-7 Excellent and readable guide.
[155] Arnberger. L. P. Flowers of the Southwest Mountains. Southwestern Monuments Ass. 1968 A lovely little pocket guide to wild plants in the southern Rockies of America.
[169] Buchanan. R. A Weavers Garden. Covers all aspects of growing your own clothes, from fibre plants to dyes.
[200] Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992 ISBN 0-333-47494-5 Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
[207] Coffey. T. The History and Folklore of North American Wild Flowers. Facts on File. 1993 ISBN 0-8160-2624-6 A nice read, lots of information on plant uses.
[213] Weiner. M. A. Earth Medicine, Earth Food. Ballantine Books 1980 ISBN 0-449-90589-6 A nice book to read though it is difficult to look up individual plants since the book is divided into separate sections dealing with the different medicinal uses plus a section on edible plants. Common names are used instead of botanical.
[222] Foster. S. & Duke. J. A. A Field Guide to Medicinal Plants. Eastern and Central N. America. Houghton Mifflin Co. 1990 ISBN 0395467225 A concise book dealing with almost 500 species. A line drawing of each plant is included plus colour photographs of about 100 species. Very good as a field guide, it only gives brief details about the plants medicinal properties.
[238] Bown. D. Encyclopaedia of Herbs and their Uses. Dorling Kindersley, London. 1995 ISBN 0-7513-020-31 A very well presented and informative book on herbs from around the globe. Plenty in it for both the casual reader and the serious student. Just one main quibble is the silly way of having two separate entries for each plant.
[257] Moerman. D. Native American Ethnobotany Timber Press. Oregon. 1998 ISBN 0-88192-453-9 Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.
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