Flora of North America species comparison

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

Erigeron foliosus var. foliosus

Erigeron foliosus
Photo is of parent taxon

leafy fleabane, thread stem fleabane

leafy daisy, leafy fleabane
Habit Perennials, 20–100 cm; taprooted, woody, with caudexlike branches 2–15 cm, or leafy stems arising directly from roots; single plants usually bowl-shaped, with up to a 65 cm lateral spread.
Stems

erect or ascending (often purple, distal branches stiff, spreading-ascending, without axillary leaf tufts), glabrous or sparsely strigose (hairs straight, ascending-appressed), sometimes minutely glandular distally.
Leaves

without prominent 1-directional orientation;

blades (filiform or linear to oblanceolate) 20–40(–50) × 1–5(–10) mm, apices usually rounded, faces sparsely strigose to hirsuto-strigose.

cauline;

blades 1-nerved (often sharply folding in narrower forms), filiform or linear to oblanceolate, 10–65 × 1–5(–10) mm, relatively even-sized (mid and distal longer than internodes), margins entire, ciliate (cilia ascending-appressed, thick-based), faces glabrous or sparsely strigose, eglandular.
Involucres

3.2–6.5 × 7–12(–14) mm.
Ray florets

15–49;

corollas 6–10 mm.

15–60;

corollas white to blue, 5–15 mm, laminae not coiling or reflexing.
Disc corollas

3.5–4(–5) mm.

3.5–5.5 mm (throats slightly indurate, not inflated).
Phyllaries

0.5–0.8 mm wide, margins usually thick or only with narrow scarious rims, midnerves usually not distinct and orange-resinous, abaxial faces glabrate to sparsely strigose, sometimes sparsely, obscurely glandular;

inner phyllaries 3.2–4.5 mm.

in 3–5 series (outer: margins stramineous, with distal, greenish, rhomboid patches; inner: margins narrow, scarious), glabrous or moderately to densely strigoso-hirsute, sparsely and obscurely to densely and prominently minutely glandular.
Heads

1 or 2–5 in loosely corymbiform arrays.
Cypselae

(1.8–)2.2–3 mm, 2-nerved, faces sparsely strigose;

pappi: outer of setae, inner of 19–34 bristles.
2n

= 18.

Erigeron foliosus var. foliosus

Erigeron foliosus
Phenology Flowering May–Aug(–Sep).
Habitat Dry, open, rocky or grassy slopes, chaparral, oak to pine or pine-fir woodlands
Elevation (50–)300–2300(–2900) m ((200–)1000–7500(–9500) ft)
Distribution
from FNA
CA; Mexico (Baja California)
[BONAP county map]
from FNA
CA; nw Mexico
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 5 (5 in the flora).

Erigeron foliosus and its close relatives, including varieties, were mapped in detail by G. L. Nesom (1992b).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Phyllaries 0.5–0.8 mm wide, margins usually thick or only narrowly scarious, abaxial faces sometimes sparsely and obscurely glandular
→ 2
1. Phyllaries 0.8–1 mm wide, margins usually broadly scarious, abaxial faces densely and prominently glandular
→ 3
2. Leaves (30–)40–60 mm, apices usually acute, often mostly with 1-directional orientation to one side of stems; inner phyllaries (4–)5–6 mm; ray corollas 8–13 mm
var. hartwegii
2. Leaves 20–40(–50) mm, apices usually rounded, without a prominent 1-directional orientation; inner phyllaries 3.2–4.5 mm; ray corollas 6–10 mm
var. foliosus
3. Phyllaries glabrous; leaves mostly 1–2 mm wide
var. confinis
3. Phyllaries moderately to densely strigoso-hirsute; leaves mostly 2–4 mm wide
→ 4
4. Leaf faces sparsely to moderately strigose; phyllaries with prominent, raised, orange-resinous midnerves; ray corollas 7–10 mm
var. franciscensis
4. Leaf faces glabrous or glabrate except for ascending-ciliate margins and midveins; phyllaries usually without distinct, orange-resinous midnerves; ray corollas 10–15 mm
var. mendocinus
Source FNA vol. 20, p. 312. FNA vol. 20, p. 311.
Parent taxa Asteraceae > tribe Astereae > Erigeron > Erigeron foliosus Asteraceae > tribe Astereae > Erigeron
Sibling taxa
E. foliosus var. confinis, E. foliosus var. franciscensis, E. foliosus var. hartwegii, E. foliosus var. mendocinus
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. 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. 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
Subordinate taxa
E. foliosus var. confinis, E. foliosus var. foliosus, E. foliosus var. franciscensis, E. foliosus var. hartwegii, E. foliosus var. mendocinus
Synonyms E. foliosus var. stenophyllus, E. tenuissimus
Name authority unknown Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 309. (1840)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America, OregonFlora

The species comparison tool is brought to you by:
Northwest Wildflowers