Piperia leptopetala

Rydberg

Bull. Torrey Bot. Club 28: 637, fig. 29. 1901.

IllustratedEndemic
Treatment appears in FNA Volume 26. Treatment on page 577. Mentioned on page 572, 575.

Plants 13–70 cm. Stems uniform toward base, 0.7–3.4 mm diam.; bracts 2–6 (–12). Leaves ± prostrate; blade 6.5–15 × 1.5–3 cm. Inflorescences densely flowered, 4–40 cm; rachis usually longer than peduncle; bracts 5–11 mm. Flowers pale green, translucent; fragrance nocturnal, delicate, ± lemony or otherwise pleasant; sepals oblong, 2.5–5 × 0.7–1.6 mm; lateral sepals recurved; petals erect, strongly upwardly recurved, straight, linear, spreading to form a V, 3–6 × 0.6–1.3 mm, apex long-acuminate; lip projecting to ± deflexed, narrowly lanceolate, 2.5–5 × 0.8–2.5 mm; spur deflexed, curved, tapered, 4–9 mm; viscidia broadly elliptic-ovate, 0.25–0.45 × 0.2–0.3 mm; rostellum slightly elongate. Capsules 4–9 mm. Seeds cinnamon brown.


Phenology: Flowering May–Jul.
Habitat: Woodlands and chaparral, sometimes on serpentine soils
Elevation: 100–2200 m

Discussion

Piperia leptopetala is uncommon but widely distributed in California. Its flowers have the narrowest sepals and petals of the genus; this gives the inflorescence a lacy appearance. Piperia leptopetala blooms earlier than sympatric P. transversa and P. elongata, two species with which it is sometimes confused.

Selected References

None.

Lower Taxa

None.
... more about "Piperia leptopetala"
self-pollination +
James D. Ackerman +  and Randall Morgan +
Rydberg +
indehiscent +
simple +  and sessile +
conduplicate +  and plicate +
6.5 cm65 mm <br />0.065 m <br /> (15 cm150 mm <br />0.15 m <br />) +
lanceolate +  and oblanceolate +
1.5cm;3cm +
0.4 cm4 mm <br />0.004 m <br /> (?) +  and 0.9 cm9 mm <br />0.009 m <br /> (?) +
inconspicuous +
parallel +  and close +
100–2200 m +
pleasant +  and lemony +
ellipsoid;sausage-shaped +
Woodlands and chaparral, sometimes on serpentine soils +
lateral +  and terminal +
4 cm40 mm <br />0.04 m <br /> (40 cm400 mm <br />0.4 m <br />) +
petiolate +, sessile +  and simple +
duplicate +, convolute +, whorled +, opposite +, distichous +  and alternate +
ephemeral +
cauline +  and basal +
2 (?) +  and 6 (?) +
reduced +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
projecting +  and more or less deflexed +
lanceolate +
larger +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
differing in form and color +
1-many-flowered +  and cymose +
pendent +  and erect +
straight +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
spreading +, recurved +  and erect +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
Flowering May–Jul. +
Bull. Torrey Bot. Club +
spicate +  and many-flowered +
usually longer +
aerial +  and subterranean +
minute +
free +, distinct +, adnate +  and connate +
foliaceous +
not +  and alike +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
Illustrated +  and Endemic +
tapered +
0.4 cm4 mm <br />0.004 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.34 cm3.4 mm <br />0.0034 m <br />) +
pendent +  and erect +
proliferous +
thickened +  and stout +
Piperia leptopetala +
species +
ellipsoid-ovoid +
0.025 cm0.25 mm <br />2.5e-4 m <br /> (0.045 cm0.45 mm <br />4.5e-4 m <br />) +
elliptic-ovate +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
aquatic +, lithophytic +, terrestrial +  and epiphytic +
saprophytic +, photosynthetic +  and mycotrophic +