Lupinus latifolius var. barbatus

Taxobox
name = Klamath Lupine
status = G1
status_system = TNC
regnum = Plantae
divisio = Magnoliophyta
classis = Magnoliopsida
ordo = Fabales
familia = Fabaceae
genus = "Lupinus"
species = "L. latifolius"
subspecies = "L." "l." var. "barbatus"
trinomial = "Lupinus latifolius" var. "barbatus"
trinomial_authority = (L.F. Hend.) MunzKlamath Lupine ("Lupinus latifolius" var. "barbatus"), which may also be called "bearded lupine, is a very rare plant of the Western U.S., known only from northeastern California and southeastern Oregon. It is a rare variety of a more common plant, "L. latifolius", which pertains to the bean family.

Technical Description

*Stems stout, more or less fistulous, commonly several to many, branched above, 2 or more feet high, hairy (glabrous to strigose, or rather villous, especially around the nodes).
*Stipules conspicuous, not adnate, not broad; long, villous with spreading hairs (or hirsute with ascending hairs), 5–10 mm.
*Leaves cauline; petiole 4–20 cm.
*Leaflets about 9, upper surface glabrous to hairy, lower surface sparsely subvillous, 3½ –5 (10) cm.
*Bracts conspicuous, long (8–12 mm), villous, deciduous.
*Raceme open, with a long (8–20 cm) peduncle.
*Pedicels slender, glabrate, 2–5 mm long.
*Flowers 8–10 mm, scattered, mostly pale; apex of the banner normally well reflexed from the upper margins of the wing-petals, its ventral meridian sulcus usually shallow, including very little of the wings. Keel ciliate on the upper edge.
*Ovary not very villous.
*Ovules 6–7.
*Fruit 2–4½ cm, quite densely hairy.
*Seeds 3–4 mm, mottled dark brown.cite book | last = Abrams | first = Leroy | year = 1944 | chapter = "Lupinus latifolius" var. "ligulatus" (Greene) C.P. Smith | title = Illustrated Flora of the Pacific States, Vol. II: Buckwheats to Kramerias | pages = 514 | publisher = Stanford University Press] cite journal
last = Applegate
first = Elmer I.
title = Plants of Crater Lake National Park
journal = The American Midland Naturalist
volume = 22
issue = 2
pages = 278
date = Sept. 1939] cite journal
last = Henderson
first = L.F.
title = New Plants from Idaho and from Other Localities of the Northwest
journal = Bulletin of the Torrey Botanical Club
volume = 27
issue = 6
pages = 345
date = June 1900] cite book
last = Sholars | first = Teresa | chapter = "Lupinus" | editor = James C. Hickman | year = 1993 | title = The Jepson Manual: Higher Plants of California | pages = 632 | publisher = University of California Press] cite book
last = Jepson | first = Willis Lynn | year = 1936 | title = A Flora of California, Vol. II: Capparidaceae to Cornaceae | pages = 260 | publisher = University of California Press] cite book
last = Munz | first = Philip A. | coauthors = David D. Keck | year = 1959 | title = A California Flora | pages = 827-828 | publisher = University of California Press] cite journal
last = Wynd
first = F. Lyle
title = Flora of Crater Lake National Park
journal = The American Midland Naturalist
volume = 17
issue = 6
pages = 922
date = November 1936]

Distribution, Habitat, and Ecology

Distributed from northeastern California to southern Oregon.

This plant enjoys mesic conditions, and lives in wet, shady to open, sunny clay banks along streams and on the margins of meadows, within higher elevation conifer woodlands.cite web
title = Inventory of Rare and Endangered Plants (online edition, v7-07a)
publisher = California Native Plant Society
url = http://cnps.web.aplus.net/cgi-bin/inv/inventory.cgi/Go?_id=lupinus_latifolius_var._barbatus&sort=DEFAULT&search=barbatus
accessdate = 2007-03-30]

"Broadleaf lupine ("Lupinus latifolius") is likely top-killed by fire. Established plants are probably resistant to fire-induced mortality because of perennating buds on the deep, lateral root system. It is likely that these characteristics provide for regeneration following fire. Depending on the severity of top-kill by fire, sprouting from the caudex would also be a possibility. Information is lacking on the regeneration of broadleaf lupine seed after fire. Research to date (2006) suggests that broadleaf lupine responds favourably to fire. It was reportedly common or abundant after fire in many locations. The current body of research provides no clear direction for using fire as a management tool for broadleaf lupine populations. The research discussed [in the article] does, however, indicate that fire has a positive influence on broadleaf lupine."cite web
last = Reeves
first = Sonja L.
title = "Lupinus latifolius"
work = Fire Effects Information System
publisher = USDA FS RMRS Fire Sciences Laboratory
date = 2006
url = http://www.fs.fed.us/database/feis/
accessdate = 2007-03-30]

Conservation Status and Threats

U.S. Forest Service Pacific Southwest Region Sensitive Species

California Native Plant Society List 1B.2

NatureServe California State Rank: S1.2; Global Rank: G1

This plant is threatened by grazing (NatureServe).

Field Identification

Lupines are known to be difficult to identify, so have a good key with you. This plant most closely resembles other varieties of "L. latifolius", and could potentially be confused for "L. polyphyllus" var. "burkei". It occurs between about 4,925 ft. to 8,200 ft. above sea level, and flowers during June and July.

References

External links

* [http://www.natureserve.org/explorer/index.htm NatureServe Web Page]