The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

erigeron karvinskianus, Karwinsky's fleabane, Latin American fleabane, Mexican fleabane, Santa Barbara daisy, Spanish daisy

dwarf fleabane

Habit Perennials, often short-lived, 10–100 cm; fibrous- or taprooted, caudices woody, usually simple, stems sometimes rooting adventitiously. Perennials, 2–10 cm; taprooted, caudices with relatively short and thick branches.
Stems

erect to sprawling or decumbent (small leaf tufts in axils of larger leaves), sparsely strigose to glabrate, eglandular.

erect, hispido-hirsutulous to hirsute (hairs spreading, stiff, usually of unequal lengths, relatively thick-based), minutely glandular.

Leaves

basal (and proximal cauline withering by flowering) and cauline;

cauline blades elliptic to obovate, mostly 10–40(–50) × 5–13 mm, usually relatively even-sized along stems, margins entire or with 1–2 distal pairs of acute, mucronulate teeth or lobes, faces sparsely and loosely strigose to hirsuto-villous, eglandular.

mostly basal (persistent) (petioles prominently ciliate, hairs thick-based, spreading);

blades linear-oblanceolate, 20–40 × 1–2(–3) mm, margins entire, often coarsely spreading-ciliate, faces hispido-hirsute to hirsute or glabrous, abaxial sometimes glabrous, sometimes sparsely minutely glandular;

cauline abruptly reduced, restricted to proximal 1/3 of stems.

Involucres

2.5–3.5 × 7–10 mm.

5–8 × 7–13 mm.

Ray florets

45–80;

corollas 5–8 mm, laminae not or slightly coiling, white, sometimes drying pinkish.

15–35;

corollas usually blue to purplish, rarely white, 5–10 mm, laminae coiling.

Disc corollas

2–3.1 mm.

3.9–5.5 mm.

Phyllaries

in 3–4 series, sparsely strigose to hirsuto-villous or glabrate, sometimes minutely glandular.

in 2–3(–4) series, densely villous proximally, hirsute to hirsuto-villous, minutely glandular.

Heads

1–5 (usually from branches distal to midstem).

1.

Cypselae

1–1.4 mm, 2-nerved, faces sparsely strigose;

pappi: outer of setae, inner of 15–27 bristles.

2.2–2.8 mm, 2-nerved, faces sparsely strigose to glabrate;

pappi: outer of setae, bristles, or scales, inner of 15–23 bristles.

2n

= 18, 27, 36 (from Mexico, Central America, South America).

Erigeron karvinskianus

Erigeron nanus

Phenology Flowering Apr–Aug. Flowering May–Jun.
Habitat Moist, disturbed sites, shaded rock walls, cement cracks Dry sites, ridges, rocky slopes, clay slopes, quartzite outcrops, sagebrush, pine-fir
Elevation 300–1100 m (1000–3600 ft) 1900–2700(–3200) m (6200–8900(–10500) ft)
Distribution
from FNA
CA; Mexico; Central America [Introduced in North America; introduced in West Indies, South America, Europe, Africa, Pacific Islands, Australia]
[WildflowerSearch map]
[BONAP county map]
from FNA
ID; NV; UT; WY
[BONAP county map]
Discussion

Erigeron karvinskianus is most abundant in tropical and subtropical regions; it is widely cultivated and escaped.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Erigeron nanus is unusually variable in leaf vestiture. The tendency (especially in Cassia County, Idaho) for sparsely strigose adaxial and glabrous abaxial leaf faces is similar to that of the E. radicatus group; longer disc corollas and the strong tendency for unequal-length stem hairs, plus spreading-ciliate petioles, place E. nanus closer to E. disparipilus and E. poliospermus.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 20, p. 337. FNA vol. 20, p. 285.
Parent taxa Asteraceae > tribe Astereae > Erigeron Asteraceae > tribe Astereae > Erigeron
Sibling taxa
E. abajoensis, E. acomanus, E. acris, E. aequifolius, E. algidus, E. aliceae, E. allocotus, E. alpiniformis, E. anchana, E. annuus, E. aphanactis, E. arenarioides, E. argentatus, E. arisolius, E. arizonicus, E. asperugineus, E. aureus, E. barbellulatus, E. basalticus, E. bellidiastrum, E. bigelovii, E. biolettii, E. blochmaniae, E. bloomeri, E. breweri, E. caespitosus, E. calvus, E. canaani, E. canus, E. cascadensis, E. cavernensis, E. cervinus, E. chrysopsidis, E. clokeyi, E. compactus, E. compositus, E. concinnus, E. consimilis, E. corymbosus, E. coulteri, E. cronquistii, E. davisii, E. decumbens, E. denalii, E. disparipilus, E. divergens, E. eatonii, E. elatior, E. elatus, E. elegantulus, E. elmeri, E. engelmannii, E. evermannii, E. eximius, E. filifolius, E. flabellifolius, E. flagellaris, E. flettii, E. foliosus, E. formosissimus, E. garrettii, E. geiseri, E. glabellus, E. glacialis, E. glaucus, E. goodrichii, E. gracilis, E. grandiflorus, E. greenei, E. heliographis, E. hessii, E. howellii, E. humilis, E. hyperboreus, E. hyssopifolius, E. inornatus, E. jonesii, E. kachinensis, E. klamathensis, E. kuschei, E. lackschewitzii, E. lanatus, E. lassenianus, E. latus, E. leibergii, E. leiomerus, E. lemmonii, E. linearis, E. lobatus, E. lonchophyllus, E. maguirei, E. mancus, E. maniopotamicus, E. mariposanus, E. melanocephalus, E. miser, E. modestus, E. muirii, E. multiceps, E. nanus, E. nauseosus, E. nematophyllus, E. neomexicanus, E. nivalis, E. ochroleucus, E. oreganus, E. oreophilus, E. ovinus, E. oxyphyllus, E. pallens, E. parishii, E. parryi, E. peregrinus, E. petrophilus, E. philadelphicus, E. pinnatisectus, E. piperianus, E. piscaticus, E. poliospermus, E. porsildii, E. pringlei, E. procumbens, E. pulchellus, E. pulcherrimus, E. pumilus, E. purpuratus, E. pygmaeus, E. quercifolius, E. radicatus, E. reductus, E. religiosus, E. rhizomatus, E. robustior, E. rybius, E. rydbergii, E. salishii, E. salmonensis, E. sanctarum, E. saxatilis, E. sceptrifer, E. scopulinus, E. serpentinus, E. sionis, E. sivinskii, E. sparsifolius, E. speciosus, E. strigosus, E. subglaber, E. subtrinervis, E. supplex, E. tenellus, E. tener, E. tenuis, E. tracyi, E. trifidus, E. tweedyi, E. uintahensis, E. uncialis, E. uniflorus, E. untermannii, E. ursinus, E. utahensis, E. vagus, E. velutipes, E. vernus, E. versicolor, E. vetensis, E. vicinus, E. vreelandii, E. watsonii, E. wilkenii, E. yukonensis
E. abajoensis, E. acomanus, E. acris, E. aequifolius, E. algidus, E. aliceae, E. allocotus, E. alpiniformis, E. anchana, E. annuus, E. aphanactis, E. arenarioides, E. argentatus, E. arisolius, E. arizonicus, E. asperugineus, E. aureus, E. barbellulatus, E. basalticus, E. bellidiastrum, E. bigelovii, E. biolettii, E. blochmaniae, E. bloomeri, E. breweri, E. caespitosus, E. calvus, E. canaani, E. canus, E. cascadensis, E. cavernensis, E. cervinus, E. chrysopsidis, E. clokeyi, E. compactus, E. compositus, E. concinnus, E. consimilis, E. corymbosus, E. coulteri, E. cronquistii, E. davisii, E. decumbens, E. denalii, E. disparipilus, E. divergens, E. eatonii, E. elatior, E. elatus, E. elegantulus, E. elmeri, E. engelmannii, E. evermannii, E. eximius, E. filifolius, E. flabellifolius, E. flagellaris, E. flettii, E. foliosus, E. formosissimus, E. garrettii, E. geiseri, E. glabellus, E. glacialis, E. glaucus, E. goodrichii, E. gracilis, E. grandiflorus, E. greenei, E. heliographis, E. hessii, E. howellii, E. humilis, E. hyperboreus, E. hyssopifolius, E. inornatus, E. jonesii, E. kachinensis, E. karvinskianus, E. klamathensis, E. kuschei, E. lackschewitzii, E. lanatus, E. lassenianus, E. latus, E. leibergii, E. leiomerus, E. lemmonii, E. linearis, E. lobatus, E. lonchophyllus, E. maguirei, E. mancus, E. maniopotamicus, E. mariposanus, E. melanocephalus, E. miser, E. modestus, E. muirii, E. multiceps, E. nauseosus, E. nematophyllus, E. neomexicanus, E. nivalis, E. ochroleucus, E. oreganus, E. oreophilus, E. ovinus, E. oxyphyllus, E. pallens, E. parishii, E. parryi, E. peregrinus, E. petrophilus, E. philadelphicus, E. pinnatisectus, E. piperianus, E. piscaticus, E. poliospermus, E. porsildii, E. pringlei, E. procumbens, E. pulchellus, E. pulcherrimus, E. pumilus, E. purpuratus, E. pygmaeus, E. quercifolius, E. radicatus, E. reductus, E. religiosus, E. rhizomatus, E. robustior, E. rybius, E. rydbergii, E. salishii, E. salmonensis, E. sanctarum, E. saxatilis, E. sceptrifer, E. scopulinus, E. serpentinus, E. sionis, E. sivinskii, E. sparsifolius, E. speciosus, E. strigosus, E. subglaber, E. subtrinervis, E. supplex, E. tenellus, E. tener, E. tenuis, E. tracyi, E. trifidus, E. tweedyi, E. uintahensis, E. uncialis, E. uniflorus, E. untermannii, E. ursinus, E. utahensis, E. vagus, E. velutipes, E. vernus, E. versicolor, E. vetensis, E. vicinus, E. vreelandii, E. watsonii, E. wilkenii, E. yukonensis
Synonyms E. mucronatus
Name authority de Candolle: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 285. (1836) Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 308. (1840)
Web links