Acamptopappus sphaerocephalus. RAYLESS GOLDENHEAD. Shrub. Mojave and southern Yavapai counties, 1000-4500 feet [McD].
Achillea millefolium (=Achillea lanulosa; Achillea millefolium var. lanulosa; Achillea millefolium var. occidentalis). COMMON YARROW. WESTERN YARROW. Perennial. Throughout region at ca. 4500-11,500 feet [McD]. Hualapai Mountain, Mohave County [JANAS-24/25, A. m. var. lanulosa].
Acourtia nana (=Perezia nana). DWARF DESERTPEONY. DESERT-HOLLY. Perennial. Southern Yavapai County at ca. 3500 feet [McD].
Acourtia wrightii (=Perezia wrightii). BROWNFOOT. Perennial. Throughout the region at 6000 feet and below [McD]. Northern Hualapai Mountains, Mohave County: North end of range [JANAS-24/25].
Acroptilon repens (=Centaurea repens). RUSSIAN KNAPWEED. HARDHEADS. Perennial. Yavapai, Coconino, Navajo, and Apache counties, 3400-7200 feet [McD].
Adenophyllum cooperi (=Dyssodia cooperi). COOPER’S DOGWEED. Perennial or subshrub. Reported from Mohave County, 3500 feet or lower [McD, D. cooperi]. Northern Hualapai Mountains, Mohave County: Along Hualapai Mountain Road [JANAS-24/25, D. cooperi].
Adenophyllum porophylloides (=Dyssodia porophylloides). SAN FELIPE DOGWEED. Perennial or subshrub. Reported from Mohave County, and from Grand Canyon in Coconino County, 4000 feet or lower [McD].
Adenophyllum wrightii (=Dyssodia neomexicana). WRIGHT’S DOGWEED. Annual. Said to have been present near Springerville, Apache County, 1946; the only known location [McD]. Only taxon present in Arizona is var. wrightii [FNA-21].
Ageratina herbacea. FRAGRANT SNAKEROOT. THOROUGHWORT. Perennial. Grand Canyon National Park, 7500-8500 feet [PP&B;]. Northern Hualapai Mountains, Mohave County [JANAS-24/25].
Agoseris aurantiaca. MOUNTAIN AGOSERIS. COLORADO PLATEAU AGOSERIS. ORANGE AGOSERIS. Perennial. Coconino and Apache counties, at ca. 7000-11,500 feet [McD]. Only taxon in Arizona is var. purpurea [FNA-19].
Agoseris glauca var. glauca (=Agoseris arizonica). PRAIRIE AGOSERIS. PALE AGOSERIS. Perennial. Throughout region at 6500-10,000 feet [McD].
Agoseris heterophylla var. heterophyllaANNUAL AGOSERIS. Annual. Mohave and Yavapai counties, 2500-5000 feet [McD].
Agoseris parviflora (=Agoseris glauca var. laciniata; Agoseris glauca var. parviflora). FALSE AGOSERIS. Perennial. Yavapai, Coconino, and Apache counties, 5500-11,000 feet [McD].
~Agoseris retrorsa. SPEARLEAF AGOSERIS. Perennial. In Arizona and probably in northern Arizona [FNA-19].
Almutaster pauciflorus (=Aster pauciflorus). ALKALI MARSH ASTER. Perennial. Five miles southeast of Wheatfield Lake in northern Apache County at ca. 7500 feet [McD].
Ambrosia acanthicarpa (=Franseria acanthicarpa). FLATSPINE BURR RAGWEED. Annual. Throughout the area at 1000-7000 feet [McD].
Ambrosia ambrosioides (=Franseria ambrosioides). AMBROSIA LEAF BURR RAGWEED. Shrubby perennial or shrub. Southern Yavapai County below 4500 feet [McD].
Ambrosia artemisiifolia. ANNUAL RAGWEED. Annual. Yavapai, Coconino, Navajo, and Apache counties, at 5200-8000 feet [McD].
Ambrosia confertiflora (=Franseria confertiflora). WEAKLEAF BURR RAGWEED. Perennial. Mohave, Yavapai, and Coconino counties, 1000-7100 feet [McD].
Ambrosia dumosa (=Franseria dumosa). BURSAGE. BURROBUSH. Shrub. Mohave, Yavapai, and Coconino counties below 3000 feet [McD].
Ambrosia eriocentra (=Franseria eriocentra). WOOLLY FRUIT BURR RAGWEED. Shrub or subshrub. Mohave, Yavapai, and Coconino counties, 1500-5000 feet [McD].
Ambrosia psilostachya. WESTERN RAGWEED. CUMAN RAGWEED. Annual to perennial. Yavapai, Coconino, Navajo, and Apache counties [McD].
Ambrosia tomentosa (=Franseria discolor). SKELETONLEAF BURR RAGWEED. Perennial. Coconino and Navajo counties, 4800-7100 feet [McD].
Ambrosia trifida (=Ambrosia trifida var. texana; Ambrosia aptera). GIANT RAGWEED. GREAT RAGWEED. Annual. Yavapai, Coconino, Navajo, and Apache counties, at ca. 2500-8000 feet [McD].
Amphipappus fremontii var. spinosus. FREMONT’S CHAFFBUSH. Shrub. Mohave County, 2000-2500 feet [McD, A. f.]. The variety is the only taxon in Arizona [FNA-20].
Anaphalis margaritacea. PEARLY EVERLASTING. WESTERN PEARLY EVERLASTING. Perennial. Coconino County, 5000-8500 feet [McD].
Anisocoma acaulis. SCALEBUD. Annual. Mohave County, 2000-4000 feet [McD].
Antennaria marginata. WHITEMARGIN PUSSYTOES. Perennial. Throughout region at 5000-9500 feet [McD]. Northern Hualapai Mountains, Mohave County [JANAS-24/25].
~Antennaria media. ROCKY MOUNTAIN PUSSYTOES. Perennial. In Arizona, probably in northern Arizona [FNA-19].
~Antennaria microphylla. LITTLELEAF PUSSYTOES. Perennial. In Arizona, probably in northern Arizona [FNA-19].
Antennaria parvifolia. NUTTALL’S PUSSYTOES. SMALL-LEAF PUSSYTOES. Perennial. Yavapai, Coconino, Navajo, and Apache counties, 5000-12,000 feet [McD].
~Antennaria rosea ssp. arida. DESERT PUSSYTOES. Perennial. In Arizona, probably in northern Arizona [FNA-19].
~Antennaria rosea ssp. confinis. Perennial. In Arizona, probably in northern Arizona [FNA-19].
Antennaria rosulata. WOOLLY PUSSYTOES. KAIBAB PUSSYTOES. Perennial. Coconino and Apache counties, 5500-12,000 feet [McD].
~Antennaria umbrinella. UMBER PUSSYTOES. BROWN PUSSYTOES. BROWN-BRACTED PUSSYTOES. Perennial. In Arizona, probably in northern Arizona [FNA-19].
Anthemis cotula. DOG FENNEL. MAYWEED. STINKING CHAMOMILE. Annual. Reported from Yavapai and Coconino counties, 2500-8000 feet [McD].
Arctium minus. COMMON BURDOCK. LESSER BURDOCK. Biennial. Reported from Snowflake in Navajo County in 1917 [McD].
~Arida arizonica (=Machaeranthera coulteri var. arida; Machaeranthera arizonica). DESERT TANSY-ASTER. Annual. In Arizona, probably in northern Arizona [FNA-20].
Arnica chamissonis (=Arnica chamissonis ssp. foliosa var. andina; Arnica foliosa). CHAMISSO ARNICA. LEAFY ARNICA. ARNICA DE CHAMISSO. Perennial. Coconino and Apache counties at ca 8000-9000 feet [McD].
Arnica cordifolia. HEARTLEAF ARNICA. Perennial. Coconino County, at ca. 8000-9000 feet [McD].
Artemisia biennis. BIENNIAL WORMWOOD. Annual or biennial. Mormon Lake and elsewhere in the Flagstaff area, Coconino County, at ca. 6800-7200 feet [McD].
Artemisia bigelovii. BIGELOW SAGEBRUSH. Shrub. Throughout region at 3200-8000 feet [McD].
Artemisia campestris ssp. pacifica nbsp;(=Artemisia pacifica). WESTERN SAGEWORT. FIELD SAGEWORT. Biennial or perennial. Yavapai, Coconino, Navajo, and Apache counties, 5500-8500 feet [McD].
~Artemisia cana ssp. viscidula (=Artemisia argillosa; Artemisia viscidula). STICKY SAGEBRUSH. Shrub. In Arizona, probably in northern Arizona [FNA-19].
Artemisia carruthii (=Artemisia carruthii. var. wrightii). CARRUTH’S SAGEWORT. CARRUTH WORMWOOD. Perennial. Throughout region, mostly between 6000-9000 feet [McD]. Northern Hualapai Mountains, Mohave County [JANAS-24/25].
Artemisia dracunculus (=Artemisia dracunculoides). WILD TARRAGON. TARRAGON. Perennial or subshrub. Found throughout the region at ca. 3500-9000 feet [McD]. Northern Hualapai Mountains, Mohave County [JANAS-24/25].
Artemisia filifolia. SAND-SAGE. SAND SAGEBRUSH. Shrub or subshrub. Mohave, Coconino, Navajo, and Apache counties, at 4000-6500 feet [McD].
Artemisia franserioides. BURSAGE MUGWORT. RAGWEED SAGEBRUSH. Biennial or perennial. Reported from the White Mountains of Apache County, at 8000-10,000 feet [McD].
Artemisia frigida. FRINGED-SAGE. PRAIRIE SAGEWORT. Perennial or subshrub. Coconino, Navajo, and Apache counties, at 5500-8000 feet [McD].
Artemisia ludoviciana ssp. ludoviciana (=Artemisia ludoviciana ssp. typica). WHITE SAGEBRUSH. SILVER WORMWOOD. SILVER-SAGE. Perennial.
Artemisia ludoviciana ssp. albula. WHITE SAGEBRUSH. WHITE WORMWOOD. Perennial.
Artemisia ludoviciana ssp. mexicana. WHITE SAGEBRUSH. Perennial. Northern Hualapai Mountains, Mohave County: on crest of ridge [JANAS-24/25].
Artemisia ludoviciana ssp. sulcata. WHITE SAGEBRUSH. Perennial.
Artemisia nova (= Artemisia arbuscula ssp. nova). BLACK SAGEBRUSH. Shrub. Coconino, Navajo, and Apache counties, at 6000-8000 feet [McD].
Artemisia pygmaea. PYGMY SAGEBRUSH. Perennial or subshrub. Two miles south of Fredonia, Coconino County [McD].
Artemisia tridentata. BIG SAGEBRUSH. Shrub. Mohave, Coconino, Navajo, and Apache counties, at 5000-8000 feet [McD].
Atrichoseris platyphylla. PARACHUTE PLANT. GRAVEL GHOST. TOBACCO WEED. Annual. Mohave County at 2500 feet or lower [McD].
Baccharis brachyphylla. SHORTLEAF BACCHARIS. Perennial or subshrub. Mohave County, 1500-4000 feet [McD].
Baccharis emoryi. EMORY’S BACCHARIS. Shrub. Mohave, Yavapai, and Coconino counties at 1000-5000 feet [McD].
Baccharis pteronioides. YERBA DE PASMO. Shrub. Mohave and Yavapai counties, 3500-6000 feet [McD]. Northern Hualapai Mountains, Mohave County [JANAS-24/25].
Baccharis salicifolia (=Baccharis glutinosa; Baccharis viminea). SEEP-WILLOW. MULE FAT. Shrub. Mohave, Yavapai, and Coconino counties at up to 5500 feet, but usually lower [McD]. Northern Hualapai Mountains, Mohave County: on east side of the range [JANAS-24/25].
Baccharis sarothroides. DESERT-BROOM. Shrub. Mohave and Yavapai counties, at 1000-5500 feet [McD].
Baccharis sergiloides. WATERWEED. WATERWEED BACCHARIS. Perennial. Mohave, Yavapai, and Coconino counties, 2200-6500 feet [McD]. Northern Hualapai Mountains, Mohave County [JANAS-24/25].
Baccharis thesioides. ARIZONA BACCHARIS. Shrub. Mogollon Rim, Coconino County, at ca. 7000 feet [McD].
Baccharis wrightii. WRIGHT’S BACCHARIS. Perennial or subshrub. Yavapai, Coconino, Navajo, and Apache counties, at 5000-6000 feet [McD].
Bahia dissecta. YELLOW-RAGWEED. RAGLEAF BAHIA. Annual to perennial. Throughout the region, at ca. 4500-9500 feet [McD]. Northern Hualapai Mountains, Mohave County [JANAS-24/25].
Baileya multiradiata. DESERT MARIGOLD. Annual to perennial. Mohave and Yavapai counties, and in Grand Canyon of Coconino County, mostly between 2000-5000 feet [McD].
Baileya pleniradiata. WOOLLY DESERT MARIGOLD. Annual to perennial. Mohave, Yavapai, and northern Navajo counties at 1000-6800 feet [McD].
Balsamorhiza sagittata. ARROWLEAF BALSAMROOT. Perennial. Corrizo Mountains in NE Apache County, 7800-8700 feet [McD].
Bebbia juncea var. aspera (McD notes that the var. aspera is “scarcely distinguishable from the species” and does not try to separate them; FNA-21 indicates this is the only variety present in the US.) SWEETBUSH. CHUCKWALLA’S DELIGHT. Shrub. Reported from Mohave and Yavapai counties and from Grand Canyon in Coconino County, at up to 4000 feet [McD].
Bidens bigelovii. BIGELOW’S BEGGARTICKS. Annual. Southern Apache County at ca. 6500 feet [McD].
Bidens ferulifolia (specific name spelled ferulaefolia in McD). APACHE BEGGARTICKS. Perennial. Reported from Yavapai County, found in southern Navajo and Apache counties at up to 6500 feet [McD].
Bidens heterosperma. ROCKY MOUNTAIN BEGGARTICKS. Annual. Reported from San Francisco Mountain, Coconino County [McD].
Bidens laevis. SMOOTH BEGGARTICKS. Annual to perennial. Reported from Bradshaw Mountains, Yavapai County; found at Big Lake, Apache County; 3500-9000 feet [McD].
Bidens leptocephala. FEWFLOWER BEGGARTICKS. Annual. Reported from southern Apache County to 6000 feet [McD].
Bidens tenuisecta. SLIMLOBE BEGGARTICKS. Annual. Coconino and Apache counties, at 6000-8000 feet [McD].
Brickellia atractyloides. SPEARLEAF BRICKELLBUSH. Shrub. Mohave, Yavapai, and Coconino counties below 3500 feet (usually much lower) [McD].
Brickellia betonicifolia. BETONYLEAF BRICKELLBUSH. Perennial. Reported from Yavapai County, and southern Coconino and Navajo counties, 4500-6500 feet [McD].
Brickellia brachyphylla. PLUMED BRICKELLBUSH. Perennial. Reported from southern Apache County, 5500-7000 feet [McD].
Brickellia californica. CALIFORNIA BRICKELLBUSH. Shrub. Throughout northern Arizona at 3000-7500 feet [McD]. Northern Hualapai Mountains, Mohave County [JANAS-24/25].
Brickellia coulteri. COULTER’S BRICKELLBUSH. Perennial. Mohave and Yavapai counties, and Havasu Canyon, Coconino County, up to ca. 4500 feet [McD].
Brickellia desertorum. DESERT BRICKELLBUSH. Shrub. Reported from Mohave County, 1000-4000 feet [McD].
Brickellia eupatorioides var. chlorolepis (=Kuhnia rosmarinifolia). FALSE-BONESET. Perennial. Coconino County, probably also Yavapai, Navajo, and Apache counties, 4500-7500 feet [McD]. Twin Springs Canyon, western Grand Canyon National Park in Mohave County [CAN-7(1)].
Brickellia floribunda. CHIHUAHUAN BRICKELLBUSH. Perennial. Mohave, Yavapai, Coconino, and Navajo counties, 3000-5500 feet [McD]. Hackberry, Twin Spring Canyon in western Grand Canyon, both in Mohave County; Clear Creek in Grand Canyon east of Phantom Ranch, in Coconino County [CAN-7(1)].
Brickellia grandiflora. TASSELFLOWER BRICKELLBUSH. Perennial. Yavapai, Coconino, and Apache counties, 5000-9000 feet [McD]. Northern Hualapai Mountains, Mohave County [JANAS-24/25].
Brickellia incana. WOOLLY BRICKELLBUSH. Subshrub. Mohave County, 1500-3500 feet [McD]. Northern Hualapai Mountains, Mohave County: Near Sawmill Canyon [JANAS-24/25].
Brickellia longifolia. LONGLEAF BRICKELLBUSH. Shrub. Northern Coconino County, 3500-8000 feet [McD].
Brickellia longifolia var. multiflora (=B. multiflora). LONGLEAF BRICKELLBUSH. Shrub. Havasu Canyon, and North Rim of Grand Canyon, Coconino County [McD].
Brickellia microphylla var. scabra (=Brickellia scabra). ROUGH BRICKELLBUSH. Perennial. Coconino, Navajo, and Apache counties, 3000-7000 feet [McD].
Brickellia oblongifolia var. linifolia. NARROWLEAF BRICKELLBUSH. Perennial. Mohave, Coconino, Navajo, and Apache counties, 4500-8500 feet [McD]. Northern Hualapai Mountains, Mohave County: along Hualapai Mountain Road [JANAS-24/25].
Brickellia rusbyi. STINKING BRICKELLBUSH. Perennial. Reported from southern Apache County, 4500-8500 feet [McD].
Calycoseris parryi. YELLOW TACKSTEM. Annual. Mohave and Yavapai counties, and in Grand Canyon in Coconino County, mostly between 3000-4000 feet [McD].
Calycoseris wrightii. WHITE TACKSTEM. Annual. Mohave and Yavapai counties, 1000-4000 feet [McD].
Carduus nutans. MUSK-THISTLE. Biennial. Apache County at 6000-6500 feet [McD].
Carphochaete bigelovii. (Misspelled Carpochete in McD). BIGELOW’S BRISTLEHEAD. Shrub. Southern Apache County, 4000-7000 feet [McD].
Centaurea americana. AMERICAN STAR-THISTLE. Annual. Southern Navajo and Apache counties [McD].
Centaurea melitensis. TOCALOTE. MALTESE STAR-THISTLE. Annual. Mohave, Yavapai, and Apache counties, 2100 feet and higher [McD].
Chaenactis carphoclinia. PEBBLE PINCUSHION. Annual. Mohave County, 1000-3000 feet [McD]. Trail Canyon (a tributary of western Grand Canyon near Colorado River Mile 219), Grand Wash Bay (part of Lake Mead), both in Mohave Canyon [CAN-7(1)].
Chaenactis douglasii. DOUGLAS’ DUSTYMAIDEN. Biennial or perennial. Northern Coconino County, Lukachukai Mountains of Apache County, at ca. 7000 feet or higher [McD]. Northern Hualapai Mountains, Mohave County [JANAS-24/25].
Chaenactis fremontii. PINCUSHION FLOWER. Annual. Mohave, Yavapai, and Coconino counties, 1000-3500 feet [McD].
Chaenactis macrantha. BIGHEAD DUSTYMAIDEN. Annual. Mohave, Coconino, and Navajo counties at 1500-3000 feet [McD].
Chaenactis stevioides. STEVE’S DUSTYMAIDEN. Annual. Throughout the region at 1000-6500 feet [McD].
Chaenactis xantiana. FLESHCOLOR PINCUSHION. Annual. Mohave County, Havasu Canyon in Coconino County, 2000-3700 feet [McD].
Chaetopappa ericoides (=Aster arenosus; Aster hirtifolius). ROSE-HEATH. Perennial. Throughout region at 3200-7500 feet [McD].
Chamaechaenactis scaposa. FULLSTEM. Perennial. Reported from 15 miles north of “Canada”, Apache County, at 6000 feet [McD; I can find no such place name as “Canada” in this part of Arizona, and am suspecting that it is a gross typo for either Concho or Ganado, both at about the stated elevation and in Apache County].
Chloracantha spinosa (=Aster spinosus). MEXICAN DEVILWEED. SPINY CHLORACANTHA. Perennial. Mohave, Yavapai, and Coconino counties, at 1000-4200 feet [McD].
Chrysothamnus baileyi (=Chrysothamnus pulchellus var. baileyi). BAILEY’S RABBITBRUSH. Shrub. Coconino and Navajo counties, 5000-6500 feet [McD].
Chrysothamnus depressus. LONGFLOWER RABBITBRUSH. Subshub. Mohave, Coconino, and Navajo counties, 5000-7500 feet [McD]. Northern Hualapai Mountains, Mohave County [JANAS-24/25].
Chrysothamnus greenei. GREENE’S RABBITBUSH. Shrub. Coconino, Navajo, and Apache counties, 5000-7000 feet [McD].
Chrysothamnus molestus (=Chrysothamnus viscidiflorus var. molestus). ARIZONA RABBITBRUSH. Shrub.
Chrysothamnus viscidiflorus ssp. viscidiflorus. YELLOW RABBITBRUSH. Shrub.
Chrysothamnus viscidiflorus ssp. viscidiflorus var. stenophyllus. YELLOW RABITBRUSH. Shrub.
Chrysothamnus viscidiflorus ssp. lanceolatus (=Chrysothamnus viscidiflorus var. elegans). YELLOW RABITBRUSH. Shrub.
Chrysothamnus viscidiflorus ssp. puberulus. YELLOW RABITBRUSH. Shrub. Bill Hall Trail near Monument Point (North Rim, Grand Canyon National Park), Coconino County [CAN-7(1)]
Cichorium intybus. CHICORY. COFFEEWEED. SUCCORY. BLUE SAILORS. Perennial. Yavapai, Coconino, Navajo, and Apache counties, at ca. 4000-7000 feet [McD].
Cirsium arizonicum. ARIZONA THISTLE. Biennial or short-lived perennial. Mohave, Yavapai, Coconino, and Navajo counties, at 3000-9500 feet [McD]. Northern Hualapai Mountains, Mohave County [JANAS-24/25].
Cirsium arizonicum var. nidulum (=Cirsium nidulum). Perennial. Coconino County at 5500-8000 feet [McD].
Cirsium arvense. CANADA THISTLE. CREEPING THISTLE. Perennial. Reported from near Prescott, Yavapai County; found near Flagstaff, Coconino County [McD].
Cirsium calcareum (=Cirsium bipinnatum; Cirsium pulchellum). CAINVILLE THISTLE. Perennial. Throughout region at 3500-7500 feet [McD].
Cirsium foliosum. ELK THISTLE. Perennial. Coconino and Apache counties, 7000-9500 feet [McD].
