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Iris macrosiphon

Common name:	Bowltube Iris	Family:	Iridaceae
Author:	Torr.	Botanical references:	71, 200
Synonyms:	Iris elata, Iris californica (Leichtl.), Iris amabilis (Eastw.)
Known Hazards:	Many plants in this genus are thought to be poisonous if ingested, so caution is advised[65]. The roots are especially likely to be toxic[238]. Plants can cause skin irritations and allergies in some people[238].
Range:	South-western N. America - California to Oregon.
Habitat:	Sunny grassy to woodland slopes below 1000 metres in California[71].
Edibility Rating (1-5):	0	Medicinal Rating (1-5):	1

Other Common Names:	From various places around the Web, may not be correct. See below.
	Bowl-tube Iris [B], Bowltube Iris [P],
Epithets:	From a Dictionary of Botanical Epithets
	macrosiphon = large tube;
Systematics:	From a USDA Plants Database
	Order: Liliales. Iris family
Noxious, Invasive and Injurious Weeds	From USDA PLANTS database, Weeds Australia , DEFRA Injurious Weeds
	Listed as noxious/invasive for: Nevada.

Physical Characteristics

Perennial growing to 0.15m. . It is in flower from May to June. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Insects. The plant is self-fertile. We rate it 0/5 for edibility and 1/5 for medicinal use.

The plant prefers light (sandy) and medium (loamy) soils and requires well-drained soil. The plant prefers acid and neutral soils. It can grow in semi-shade (light woodland) or no shade. It requires moist soil.

Habitats and Possible Locations

Woodland, Cultivated Beds, Sunny Edge.

Edible Uses

None known

Medicinal Uses

Disclaimer

Oxytoxic.

The roots are used to hasten the birth of a child[257].

Other Uses

Fibre; Paper.

A fibre is obtained from the leaves. Traditionally the N. American Indians would take just the one outside fibre from each side of a leaf. This must have necessitated using a huge number of leaves. It makes a beautifully strong and pliable cord or rope[92]. The fibre can also be used for making paper[189] The leaves are harvested in summer after the plant has flowered, they are scraped to remove the outer skin and are then soaked in water for 2 hours prior to cooking. The fibres are cooked for 24 hours with lye and then beaten in a ball mill for 3 hours. They make a light tan paper[189].

Cultivation details

Requires a well-drained lime-free soil[79]. Requires a moist soil, growing well by water[1]. Grows well in light shade.
Plants resent root disturbance, any moving is best done in early September.
Hybridizes freely with other members of this genus, particularly other Pacific coast irises[129].
Not all provenances of this species are hardy in Britain[129].
Members of this genus are rarely if ever troubled by browsing deer or rabbits[233].

Propagation

Seed - best sown as soon as it is ripe in a cold frame. Stored seed should be sown as early in the year as possible in a cold frame. Prick out the seedlings into individual pots when they are large enough to handle and grow them on in the greenhouse or cold frame for their first year. Plant out into their permanent positions in late spring or early summer.
Division, best done after flowering. Very easy, larger clumps can be replanted direct into their permanent positions, though it is best to pot up smaller clumps and grow them on in a cold frame until they are rooting well. Plant them out in the spring.

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

Fiber Plants

Web References

[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.
[C] Taxon data. from the CalFlora database.
Images from the CalPhoto database.
[P] Data. (uses, distribution, wetland) from the USDA'a Plants database.
[HP] Links, Photos, Suppliers from Hortiplex Plant Database

References for Iris amabilis (a possible synonym).

[G] Data (Common Names, Uses, Distribution) from the USDA/ARS NPGS's GRIN taxonomic database.

References for the family Iridaceae.

[CHINA] Data Very detailed botanical/identification info. from the Flora of China.

See the PFAF Links Pages for other sources.

Also try Photos and info from the The Plants Database which has 14,000 images.

References

[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]).

[65] Frohne. D. and Pfänder. J. A Colour Atlas of Poisonous Plants. Wolfe 1984 ISBN 0723408394
Brilliant. Goes into technical details but in a very readable way. The best work on the subject that I've come across so far.

[71] Munz. A California Flora. University of California Press 1959
An excellent flora but no pictures. Not for the casual reader.

[79] Innes. C. The World of Iridaceae
Deals with many of the plants in the Iris family giving brief details of habitat and notes on cultivation. Well illustrated.

[92] Balls. E. K. Early Uses of Californian Plants. University of California Press 1975 ISBN 0-520-00072-2
A nice readable book.

[129] ? Alpine Garden Society Bulletin. Volume 56. Alpine Garden Society
Excerpts from the periodical. Some details on Corydalis spp.

[189] Bell. L. A. Plant Fibres for Papermaking. Liliaceae Press 1988
A good practical section on how to make paper on a small scale plus details of about 75 species (quite a few of them tropical) that can be used.

[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.

[233] Thomas. G. S. Perennial Garden Plants J. M. Dent & Sons, London. 1990 ISBN 0 460 86048 8
A concise guide to a wide range of perennials. Lots of cultivation guides, very little on plant uses.

[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.

Readers Comments

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Bibliography

Plant information taken from the Plants For A Future - Species Database. Copyright (c) 1997-2003.
WEB search engine by Rich Morris - Home Page- Contact Info
Blagdon Cross, Ashwater, Beaworthy, Devon, EX21 5DF, UK.
Website: www.pfaf.org Phone: 0845 458 4719/_44(0) 1208 872963

This page (UK) http://www.comp.leeds.ac.uk/cgi-bin/pfaf/arr_html?Iris+macrosiphon
This page (US) http://www.ibiblio.org/pfaf/cgi-bin/arr_html?Iris+macrosiphon

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We make no claims of magical effects or supernatural powers for any item in this catalog. In spite of legendary attributes or occult and craft tradition, such items are offered as curios only and beliefs concerning their magical effectiveness are related only for historical interest.