Polygonaceae

Buckwheat Family

Centrostegia thurberi (=Chorizanthe thurberi).  Annual.  Mohave and Yavapai counties, 4000 feet or lower [McD].

Chorizanthe brevicornu.  BRITTLE SPINEFLOWER.  Annual.  Mohave and Yavapai counties, 2500 feet or lower [McD].

Chorizanthe corrugata.  WRINKLED SPINEFLOWER.  Annual.  Mohave County at 1500 feet or lower [McD].

Chorizanthe rigida.  DEVIL'S SPINEFLOWER.  Annual.  Mohave County, 2500 feet or lower [McD].

Chorizanthe watsonii.  FIVETOOTH SPINEFLOWER.  Annual.  Collected at Chloride in Mohave County in 1903 [McD].

Eriogonum abertianum.  ABERT'S BUCKWHEAT.  Annual or biennial.  Yavapai and southern Coconino counties, 2500-7000 feet [McD].

Eriogonum alatum.  WINGED BUCKWHEAT.  Perennial.  Found throughout region, 3500-10,000 feet [McD].

Eriogonum brachypodum (=Eriogonum parryi).  PARRY'S BUCKWHEAT.  Annual.  Reported from northern Mohave County near Littlefield at ca. 1500 feet and from Burro Point on Lake Mead [McD].

Eriogonum cernuum.  NODDING BUCKWHEAT.  Annual.  Found throughout region at 3000-8000 feet [McD].

Eriogonum corymbosum.  CRISPLEAF BUCKWHEAT.  Subshrub.  Found in Mohave, Coconino, and Navajo counties, 5000-7500 feet [McD].

Eriogonum corymbosum var. aureum (=Eriogonum aureum).  CRISPLEAF BUCKWHEAT.  Shrub.  Mohave, Coconino, Navajo, and Apache counties, 4500-8000 feet [McD].

Eriogonum darrovii.  DARROW'S BUCKWHEAT.  Annual or biennial.  Kaibab Plateau in northern Coconino County [McD].

Eriogonum davidsonii (=Eriogonum vimineum ssp. juncinellum).  DAVIDSON'S BUCKWHEAT.  Annual.  Mohave, Yavapai, and Coconino counties, 3000-7000 feet [McD, who listed this species as a synonym of E. vimineum].

Eriogonum deflexum (=Eriogonum clutei).  SKELETON WEED.  FLATCROWN BUCKWHEAT.  Annual.  Found in Mohave, Yavapai, and Coconino counties, 5200 feet and lower [McD].

Eriogonum divaricatum.  DIVERGENT BUCKWHEAT.  Annual.  Found in Coconino, Navajo, and Apache counties at 4500-6600 feet [McD].

Eriogonum ericifolium var. ericifolium (=Eriogonum mearnsii).  YAVAPAI COUNTY BUCKWHEAT.  Shrub.  Fort Verde [Camp Verde?], Yavapai County [McD].  Eastern Yavapai County in Verde Valley and "historically near Prescott"; southeastern Coconino County [ARPC].

Eriogonum ericifolium var. pulchrum (=Eriogonum mearnsii var. pulchrum).  YAVAPAI COUNTY BUCKWHEAT.  Shrub.  Mohave, Yavapai, and Coconino counties, 3000-6500 feet [McD].

Eriogonum fasciculatum var. polifolium.  BUCKWHEAT BRUSH.  EASTERN MOHAVE BUCKWHEAT.  Shrub.  Found in Mohave, Yavapai, Coconino, and Navajo counties (most common in Mohave County), 1000-5000 feet [McD].

Eriogonum heermannii.  HEERMANN'S BUCKWHEAT.  Shrub.  Mohave and Coconino counties, 2500-8500 feet [McD].

Eriogonum hieraciifolium.  HAWKWEED BUCKWHEAT.  Perennial.  Navajo and southern Apache counties, 5000-7000 feet [McD].

Eriogonum hookeri.  HOOKER'S BUCKWHEAT.  Annual.  Found in Coconino and Mohave counties, 500-4500 feet [McD].

Eriogonum inflatum.  DESERT TRUMPET.  Perennial.  Throughout region at 4000 feet or lower [McD].

~Eriogonum inflatum var. deflatum.  DESERT TRUMPET.  Perennial.   McD briefly describes this variety, but does not indicate where, if anywhere, it occurs in our area.

Eriogonum jamesii.  JAMES' BUCKWHEAT.  Perennial.  Found in Mohave, Coconino, Navajo, and Apache counties, probably also in Yavapai County, 4500-9000 feet [McD].

Eriogonum jamesii var. flavescens (=Eriogonum bakeri).  JAMES' BUCKWHEAT.  Perennial.  Found throughout region at 5000-8000 feet [McD].

Eriogonum jonesii.  JONES' BUCKWHEAT.  Perennial.  Found near Peach Springs, Mohave County, and in Coconino County, 4000-7000 feet [McD].

Eriogonum lachnogynum.  WOOLLYCUP BUCKWHEAT.  Perennial or subshrub.  Apache County, 5000-6500 feet [McD].

Eriogonum leptocladon.  SAND BUCKWHEAT.  Subshrub.  Throughout region, 3500-6500 feet [McD].

Eriogonum leptophyllum.  SLENDERLEAF BUCKWHEAT.  Subshrub.  Reported from Coconino, Navajo, and Apache counties, 5000-6000 feet [McD].

Eriogonum maculatum.  SPOTTED BUCKWHEAT.  Annual.  Found in Mohave and Yavapai counties, 4500 feet or lower [McD].

Eriogonum microthecum var. simpsonii (=Eriogonum simpsonii).  SIMPSON'S BUCKWHEAT.  Perennial.  Throughout region at 3000-7500 feet [McD].

Eriogonum mortonianum.  MORTON WILD BUCKWHEAT.  FREDONIA BUCKWHEAT.  Shrub.  At boundary between far northern Mohave and Coconino counties, west of Fredonia, 4650 feet [ARPC].

Eriogonum ovalifolium.  CUSHION BUCKWHEAT.  Subshrub.  Mohave, Coconino, Navajo, and Apache counties, 5000-7000 feet [McD].

Eriogonum pharnaceoides.  WIRESTEM BUCKWHEAT.  Annual.  Yavapai, Coconino, Navajo, and Apache counties, 4500-7000 feet [McD].

Eriogonum plumatella.  YUCCA BUCKWHEAT.  Subshrub.  Mohave Count at ca. 3500 feet [McD].

Eriogonum polycladon (=Eriogonum densum).  SORREL BUCKWHEAT.  Annual.  Mohave, Yavapai, and Coconino counties, 1000-6500 feet [McD, E. densum]; Yavapai, Coconino, Navajo, and Apache counties, 2500-7200 feet [McD].

Eriogonum pusillum.  YELLOWTURBANS.  Annual.  Mohave County, 2000-4800 feet [McD].

Eriogonum racemosum.  REDROOT BUCKWHEAT.  Perennial or subshrub.  Throughout region, 4500-9000 feet [McD].

Eriogonum reniforme.  KIDNEYLEAF BUCKWHEAT.  Annual.  Reported from Mohave County, below 3000 feet [McD].

Eriogonum ripleyi.  FRAZIERS WELL BUCKWHEAT.  RIPLEY'S WILD BUCKWHEAT.  FRAZIER'S WELLS WILD BUCKWHEAT.  Perennial.  Near Frazier Well, western Coconino County at ca. 6000 feet [McD].  Far western Coconino County and adjacent Yavapai County, northeast of Peach Springs; also in Verde River drainage, Yavapai County; 2000-6000 feet [ARPC].

Eriogonum shockleyi.  SHOCKLEY'S BUCKWHEAT.  Subshrub.  Coconino, Navajo, and Apache counties, 4500-6000 feet [McD].

Eriogonum subreniforme.  KIDNEYSHAPE BUCKWHEAT.  Annual.  Mohave, Coconino, Navajo, and Apache counties, 4500-6000 feet [McD].

Eriogonum thomasii.  THOMAS' BUCKWHEAT.  Annual.  Mohave County, possibly also in southwestern Yavapai County, below 3500 feet [McD].

Eriogonum thompsoniae.  THOMPSON'S BUCKWHEAT.  Perennial.  West of Pipe Springs, Mohave County [McD].

Eriogonum thompsoniae var. atwoodii.  ATWOOD WILD BUCKWHEAT.  ATWOOD'S BUCKWHEAT.  Perennial.  Northern Mohave County and possibly adjacent Coconino County, near Lost Spring Mountain and west of Fredonia, 4650 feet [ARPC].

Eriogonum thurberi.  THURBER'S BUCKWHEAT.  Annual.  Mohave County, mostly below 4000 feet [McD].

Eriogonum trichopes.  LITTLE DESERTTRUMPET.  Annual or sometimes biennial.  Mohave and Yavapai counties, 4000 feet or lower [McD].

Eriogonum umbellatum.  SULPHUR-FLOWER BUCKWHEAT.  Perennial or subshrub.  Throughout region, very common in Coconino County, 5000-9000 feet [McD].

Eriogonum viscidulum.  STICKY BUCKWHEAT.  STICKY WILD BUCKWHEAT.  Annual.  Extreme northwestern Mohave County, 1500-2500 feet [ARPC].

Eriogonum wetherillii.  WETHERILL'S BUCKWHEAT.  Annual.  Eastern Coconino County, Navajo and Apache counties, 3500-6000 feet [McD].

Eriogonum wrightii.  BASTARDSAGE.  Subshrub.  Throughout region at 3000-7000 feet [McD].

Eriogonum zionis.  ZION BUCKWHEAT.  Perennial.  Found in northern Coconino County on both sides of Grand Canyon, 7000-8000 feet [McD].

Oxyria digyna.  ALPINE MOUNTAINSORREL.  Perennial.  San Francisco Mountain, Coconino County, 10,000-12,000 feet [McD].

Oxytheca perfoliata.  ROUNDLEAF OXYTHECA.  Annual.  Reported in Mohave County, 700-2000 feet [McD].

Polygonum amphibium var. emersum (=Polygonum coccineum).  LONGROOT SMARTWEED.  Perennial.  Yavapai, Coconino, Navajo, and Apache counties, 2500-7000 feet [McD].

Polygonum amphibium var. stipulaceum.  WATER SMARTWEED.  Perennial.  Coconino, Navajo, and Apache counties, 5000-9000 feet [McD].

Polygonum argyrocoleon.  SILVERSHEATH KNOTWEED.  Annual.  Reported from Mohave County, 700-3500 feet [McD].

Polygonum aviculare.  COMMON KNOTWEED.  PROSTRATE KNOTWEED.  Annual.  Mohave, Yavapai, Coconino, and Navajo counties, 1000-8500 feet [McD].

Polygonum bistortoides.  AMERICAN BISTORT.  Perennial.  Coconino and Apache counties, 7000-11,000 feet [McD].

Polygonum convolvulus.  BLACK BINDWEED.  CORNBIND.  Annual.  Throughout region at 2500-8000 feet [McD].

Polygonum douglasii.  DOUGLAS' KNOTWEED.  Annual.  Reported from Coconino and Apache counties, 7000-9500 feet [McD].

Polygonum douglasii ssp. johnstonii (=Polygonum sawatchense).  JOHNSTON'S KNOTWEED.  Annual.  Throughout region at 5500-9500 feet [McD].

Polygonum lapathifolium (=Polygonum incanum).  CURLYTOP KNOTWEED.  Annual.  Mohave, Yavapai, Coconino, and Navajo counties, 1000-6000 feet [McD]; Southern Apache County at 7000-8000 feet [McD, P. incanum].

Polygonum minimum.  BROADLEAF KNOTWEED.  Annual.  "Fort Valley Burn" north of San Francisco Mountain, Coconino County, at ca 8500 feet [McD].

Polygonum pensylvanicum.  PINKWEED.  PENNSYLVANIA SMARTWEED.  Annual.  Reported in Yavapai, Coconino, and Apache counties, 2500-7000 feet [McD].

Polygonum persicaria (=Polygonum fusiforme).  LADY'S THUMB.  SPOTTED LADYSTHUMB.  Perennial.  Yavapai, Coconino, and Navajo counties at 5000-7200 feet [McD]; reported from near Topock, Mohave County at ca 600 feet [McD, P. fusiforme].

Polygonum polygaloides ssp. kelloggii (=Polygonum kelloggii).  KELLOGG'S KNOTWEED.  Annual.  Reported north of Grand Canyon in Coconino County, 8000-9000 feet [McD].

Polygonum punctatum.  WATER SMARTWEED.  DOTTED SMARTWEED.  Usually perennial.  Yavapai, Coconino, and Navajo counties, 2500-6200 feet [McD].

Polygonum ramosissimum.  BUSHY KNOTWEED.  Annual.  Found in Yavapai, Coconino, and Apache counties, 5000-7000 feet [McD].

Pterostegia drymarioides.  WOODLAND PTEROSTEGIA.  BOTANIST'S FRIEND.  Annual.  Reported in Mohave and Yavapai counties, and in Grand Canyon in Coconino County, 3500 feet and lower [McD].

Rumex acetosella.  SHEEP SORREL.  COMMON SHEEP SORREL.  Perennial.  Coconino, Navajo, and Apache counties, 5500-8500 feet [McD].

Rumex altissimus.  PALE DOCK.  Perennial.  Reported from Coconino County, 3000-7000 feet [McD].

Rumex crispus.  CURLY-LEAF DOCK.  CURLY DOCK.  Perennial.  Throughout region, 3200-9000 feet [McD].

Rumex densiflorus.  DENSE-FLOWERED DOCK.  Perennial.  Reported from White Mountains in Apache County [McD].

Rumex hymenosepalus.  CANAIGRE.  WILD-RHUBARB.  CANAIGRE DOCK.  Perennial.  Throughout region, below 6000 feet [McD].

Rumex maritimus (=Rumex fueginus).  GOLDEN DOCK.  Annual or biennial.  Reported from between Springerville and Fort Apache in Navajo or Apache County [McD].

Rumex orthoneurus.  CHIRICAHUA DOCK.  BLUMER'S DOCK.  CHIRICAHUA MOUNTAIN DOCK.  Perennial.  Coconino County: San Francisco Mountain, Mogollon Rim; northern Gila County: below Mogollon Rim, Sierra Ancha; southern Apache County: White Mountains; 6500-9200 feet [ARPC].

Rumex salicifolius var. denticulatus (=Rumex californicus).  TOOTHED WILLOW DOCK.  Perennial.  Reported from near Prescott, Yavapai County; and from North Rim of Grand Canyon in Coconino County at 9000 feet [McD].

Rumex salicifolius var. mexicanus (=Rumex mexicanus).  MEXICAN DOCK.  Perennial.  Found throughout region at 5000-10,000 feet and probably lower in some places [McD].

Rumex violascens.  VIOLET DOCK.  Annual or biennial.  Reported from Mohave County [McD].

Stenogonum flexum. (=Eriogonum flexum).  BENT TWO-WHORL BUCKWHEAT.  Annual.  Collected in 1890 at Moenkopi in Coconino County, 4500 feet [McD].

Stenogonum salsuginosum. (=Eriogonum salsuginosum).  SALTY BUCKWHEAT.  Annual.  Reported in Navajo and Apache counties, 5000-6000 feet [McD].

This page last revised 10 April 2009.