Pterostegia drymarioides

Fischer & C. A. Meyer

Index Seminum (St. Petersburg) 2: 48. 1836.

Illustrated
Treatment appears in FNA Volume 5. Treatment on page 478.
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Plants 0.1–10 (–12) dm across. Leaves: petiole 0.2–0.6 (–1) cm; blade 0.3–2 × 0.5–2.5 (–3) cm. Involucral-bracts 1–1.5 (–3) × (1.5–) 2-3 (–3.5) mm. Flowers: perianth 0.9–1.2 mm; filaments 0.5–0.6 mm; anthers 0.2–0.3 mm. Achenes 1.2–1.5 mm. 2n = 28.


Phenology: Flowering Mar–Jul.
Habitat: Sandy to gravelly soils in shady places in grassland and chaparral communities, and in oak-pine or occasionally montane conifer woodland
Elevation: 0-1600 m

Distribution

V5 1002-distribution-map.gif

Ariz., Calif., Nev., Utah, Mexico (Baja California)

Discussion

The only presumed Oregon collection of Pterostegia drymarioides (Tolmie s.n., GH) was gathered along the Columbia River sometime in the 1830s. The only collection reportedly from New Mexico (Parry et al. 1171, US) supposedly was found in the Rio Grande Valley in the 1850s during the United States-Mexico Boundary Survey. The species likely will be found in southern Oregon (not northern), but it is unlikely that it ever occurred in New Mexico. A problem is that this species is often difficult to notice, as the plants tend to be in the shade under shrubs. Specimens often are misidentified as Parietaria (Urticaceae)—See Flora of North America volume 3, pages 406–408.

Selected References

None.

Lower Taxa

None.

"/2" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property.

... more about "Pterostegia drymarioides"
yellowish-brown;brown +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
James L. Reveal +
Fischer & C. A. Meyer +
stipelike +
awn-tipped +  and simple +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (2 cm20 mm <br />0.02 m <br />) +
broadly elliptic;fan-shaped +
0.5 cm5 mm <br />0.005 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
pubescent +  and glabrous +
scale-like +  and leaflike +
disarticulating +  and dichotomous +
not brittle +
just below the soil surface or and above the soil surface +  and spreading +
Ariz. +, Calif. +, Nev. +, Utah +  and Mexico (Baja California) +
0-1600 m +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
unisexual +  and bisexual +
disarticulating +  and solid +
decumbent to erect +  and prostrate +
unwinged +  and winged +
black +, red +, brown +  and yellowish +
exserted +  and included +
pubescent +  and glabrous +
spheroidal +, 4-gonous +, lenticular +, biconvex +, discoid +, 3-gonous +  and 2-gonous +
Sandy to gravelly soils in shady places in grassland and chaparral communities, and in oak-pine or occasionally montane conifer woodland +
uniparous +  and cymose +
cymelike +, paniclelike +, racemelike +  and spikelike +
veined +  and 2-winged +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
connate +  and free +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
urceolate +, campanulate +, turbinate +, prismatic +  and cylindric +
nonmembranous +
in whorls +, opposite +, alternate +  and rosulate +
persistent +
cauline +  and basal +
bractlike +
pubescent +  and glabrous +
lobed +  and entire +
not swollen +
orthotropous +
accrescent +
curved +  and straight +
erect to deflexed +
pale-yellow;pink or rose +
urceolate +  and campanulate +
accrescent +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
fleshy +, indurate +  and membranous +
with extrafloral nectaries +  and not articulate +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Flowering Mar–Jul. +
homostylous +  and 3-carpellate +
Index Seminum (St. Petersburg) +
, +  and solid +
slender;stout +
Illustrated +
disarticulating +  and solid +
spreading +  and arising +
not fistulose +
penicillate +, fimbriate +  and capitate +
deciduous +  and persistent +
2-lobed +  and cylindric +
coriaceous +  and membranous +
consisting of a series +  and tubular +
distinct +
erect;spreading or recurved +
spreading;erect +
chambered +, , +  and solid +
Pterostegia drymarioides +
Pterostegia +
species +
lobed +  and laciniate +
coriaceous +
persistent +
membranous +
pubescent +  and glabrous +
3 +, 2 +  and 1 +