FNA: Psilostrophe tagetina vs. Psilostrophe villosa

	Psilostrophe tagetina	Psilostrophe villosa
	paper daisy, paper flower, woolly paperflower	woolly paperflower
Habit	Biennials or perennials (rarely flowering first year), 10–30(–60+) cm.	Biennials or perennials (rarely flowering first year), 10–45(–60+) cm.
Stems	arachno-villous (gray to gray-green).	arachno-villous (gray to gray-green).
Peduncles	(3–)12–20(–40) mm.	(0.5–)1–3(–5+) mm.
Involucres	4–8 mm.	4–5(–7) mm.
Disc florets	6–9(–12).	5–8(–12).
Heads	in ± loose to crowded, corymbiform arrays.	in ± crowded, corymbiform arrays.
Cypselae	usually glabrous, sometimes hirtellous and/or gland-dotted; pappi of (4–)6–8 elliptic or lanceolate to lance-subulate scales 2–3+ mm.	usually glabrous, sometimes gland-dotted; pappi of 4–6 lanceolate to lance-subulate scales 2.5–3+ mm.
Rays	3–4(–6); laminae (3–)7–14+ mm, spreading in fruit.	(2–)3(–5); laminae 3–4(–6) mm, spreading in fruit.
2n	= 32.	= 32.

	Psilostrophe tagetina	Psilostrophe villosa
Phenology	Flowering (Apr–)May–Sep(–Dec).	Flowering (Mar–)May–Aug(–Oct).
Habitat	Desert scrub, grasslands, limestone soils, saline flats, sandy soils	Grasslands, limestone soils, gypseous soils, caliche
Elevation	(300–)600–2400 m ((1000–)2000–7900 ft)	300–900 m (1000–3000 ft)
Distribution	AZ; NM; TX; UT; Mexico (Chihuahua, Coahuila) [WildflowerSearch map] [BONAP county map]	KS; NM; OK; TX [WildflowerSearch map] [BONAP county map]
Discussion	See comments under 6. Psilostrophe villosa. (Discussion copyrighted by Flora of North America; reprinted with permission.)	In trans-Pecos Texas, Psilostrophe villosa has been collected within 10 km or so of the Rio Grande; it probably occurs in Mexico. Within 100 km or so of the New Mexico-Texas border, P. villosa and P. tagetina intergrade; B. L. Turner et al. (1988) treated P. villosa as P. tagetina var. cerifera. (Discussion copyrighted by Flora of North America; reprinted with permission.)
Source	FNA vol. 21, p. 455.	FNA vol. 21, p. 455.
Parent taxa	Asteraceae > tribe Heliantheae > subtribe Gaillardiinae > Psilostrophe	Asteraceae > tribe Heliantheae > subtribe Gaillardiinae > Psilostrophe
Sibling taxa	P. bakeri, P. cooperi, P. gnaphalodes, P. sparsiflora, P. villosa	P. bakeri, P. cooperi, P. gnaphalodes, P. sparsiflora, P. tagetina
Synonyms	Riddellia tagetina, P. tagetina var. grandiflora, P. tagetina var. lanata	P. tagetina var. cerifera
Name authority	(Nuttall) Greene: Pittonia 2: 176. (1891)	Rydberg ex Britton: Man. Fl. N. States, 1006. (1901)
Web links	WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local Web sites: KS Wildflowers WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Psilostrophe villosa

paper daisy, paper flower, woolly paperflower

woolly paperflower

Habit

Biennials or perennials (rarely flowering first year), 10–30(–60+) cm.

Biennials or perennials (rarely flowering first year), 10–45(–60+) cm.

Stems

arachno-villous (gray to gray-green).

Peduncles

(3–)12–20(–40) mm.

(0.5–)1–3(–5+) mm.

Involucres

4–8 mm.

4–5(–7) mm.

Disc florets

6–9(–12).

5–8(–12).

Heads

in ± loose to crowded, corymbiform arrays.

in ± crowded, corymbiform arrays.

Cypselae

usually glabrous, sometimes hirtellous and/or gland-dotted;

pappi of (4–)6–8 elliptic or lanceolate to lance-subulate scales 2–3+ mm.

usually glabrous, sometimes gland-dotted;

pappi of 4–6 lanceolate to lance-subulate scales 2.5–3+ mm.

Rays

3–4(–6);

laminae (3–)7–14+ mm, spreading in fruit.

(2–)3(–5);

laminae 3–4(–6) mm, spreading in fruit.

= 32.

Psilostrophe villosa

Phenology

Flowering (Apr–)May–Sep(–Dec).

Flowering (Mar–)May–Aug(–Oct).

Habitat

Desert scrub, grasslands, limestone soils, saline flats, sandy soils

Grasslands, limestone soils, gypseous soils, caliche

Elevation

(300–)600–2400 m ((1000–)2000–7900 ft)

300–900 m (1000–3000 ft)

Distribution

AZ; NM; TX; UT; Mexico (Chihuahua, Coahuila)

[WildflowerSearch map]

[BONAP county map]

KS; NM; OK; TX

[WildflowerSearch map]

[BONAP county map]

Discussion

See comments under 6. Psilostrophe villosa.

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

In trans-Pecos Texas, Psilostrophe villosa has been collected within 10 km or so of the Rio Grande; it probably occurs in Mexico. Within 100 km or so of the New Mexico-Texas border, P. villosa and P. tagetina intergrade; B. L. Turner et al. (1988) treated P. villosa as P. tagetina var. cerifera.

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

Source

FNA vol. 21, p. 455.

Parent taxa

Asteraceae > tribe Heliantheae > subtribe Gaillardiinae > Psilostrophe

Sibling taxa

P. bakeri, P. cooperi, P. gnaphalodes, P. sparsiflora, P. villosa

P. bakeri, P. cooperi, P. gnaphalodes, P. sparsiflora, P. tagetina

Synonyms

Riddellia tagetina, P. tagetina var. grandiflora, P. tagetina var. lanata

P. tagetina var. cerifera

Name authority

(Nuttall) Greene: Pittonia 2: 176. (1891)

Rydberg ex Britton: Man. Fl. N. States, 1006. (1901)

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).

Choose a data source: Flora of North America

The species comparison tool is brought to you by:

Flora of North America species comparison

Psilostrophe tagetina

Psilostrophe villosa

Psilostrophe tagetina

Psilostrophe villosa