Abronia villosa

S. Watson

Amer. Naturalist 7: 302. 1873. 1873

Common names: Desert sand-verbena
Illustrated
Treatment appears in FNA Volume 4. Treatment on page 66. Mentioned on page 62, 67, 6.

Plants annual. Stems decumbent to ascending, often widely spreading, much branched in large plants, forming large, loose mats, elongate, usually with reddish tinge, glandular-pubescent to long viscid-villous. Leaves: petiole 0.5–5 cm; blade deltate-ovate to ovate or elliptic, 1–5 × 1–4.5 cm, margins entire to sinuate and ± undulate, adaxial surface glabrous or glandular-pubescent, abaxial surface glandular-pubescent. Inflorescences: peduncle longer than subtending petiole; bracts lanceolate to lanceovate, 2.5–11 × 1–3 mm, papery, viscid-villous; flowers 15–35. Perianth: tube pink, 10–35 mm, limb usually magenta, with light eyespot, rarely white, 6–18 mm diam. Fruits usually winged, ± obdeltate in profile, 5–10 × 4–15 mm, indurate, ± rugose-veined, sometimes inconspicuously so; wings 3–5, not folded, without dilations, thin, truncate distally, equaling or extending slightly beyond conic apex of fruit body, interior spongy.

Distribution

Ariz., Calif., Nev., Utah, nw Mexico

Discussion

Varieties 2 (2 in the flora).

Selected References

None.

Key

1 Perianth tubes 10-20 mm; fruits strongly rugose veined Abronia villosa var. villosa
1 Perianth tubes 20-35 mm; fruits inconspicuously rugose veined Abronia villosa var. aurita
... more about "Abronia villosa"
glandular-pubescent +
glandular-pubescent +  and glabrous +
Leo A. Galloway +
S. Watson +
glutinous +
unequal +
woody +, leathery +  and fleshy +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
deltate-ovate;ovate or elliptic +
succulent +
1cm;4.5cm +
persistent +
distinct +
0.25 cm2.5 mm <br />0.0025 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
viscid-villous +
lanceolate +  and lanceovate +
not accrescent +
0.1 cm1 mm <br />0.001 m <br /> (?) +  and 0.3 cm3 mm <br />0.003 m <br /> (?) +
corollalike +  and petaloid +
Desert sand-verbena +
flattened +  and dilated +
Ariz. +, Calif. +, Nev. +, Utah +  and nw Mexico +
curved +  and straight +
inconspicuous +  and showy +
15 +  and 35 +
chasmogamous +  and bisexual +
rugose-veined +  and winged +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
glabrate +  and viscid puberulent +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
cauline +  and basal +
unequal +
white +  and magenta +
0.6 cm6 mm <br />0.006 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
5-lobed +
pubescent +  and glabrous +
undulate +, entire +  and sinuate +
large +
expanded +
salverform +
constricted +
0.5 cm5 mm <br />0.005 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Amer. Naturalist +
slightly rounded;conic +
thick +  and thin +
fibrous;fleshy +
membranaceous +
ribbed +, 10-ribbed +  and 5-ribbed +
pubescent +, glabrous +  and warty +
Illustrated +
spreading +, decumbent +  and ascending +
elongate +
fusiform +  and linear +
filiform +
rugose +  and smooth +
Tricratus +
slender +  and stout +
Abronia villosa +
species +
gland-tipped +
1 cm10 mm <br />0.01 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
truncate +  and not folded +
extending +  and equaling +