Piperia yadonii

Rand. Morgan & Ackerman

Lindleyana 5: 209, figs. 1A–G, 2. 1990.

EndemicConservation concern
Treatment appears in FNA Volume 26. Treatment on page 574. Mentioned on page 572.

Plants 10–50 (–80) cm. Stems attenuate toward tuberoid, 0.5–3.5 mm diam.; bracts (4–) 7–20 (–26). Leaves prostrate; blade 11–17 × 2.2–3.9 cm. Inflorescences densely flowered, cylindric, (2–) 5–15 (–30) cm; rachis shorter than peduncle; bracts (3–) 5–8 (–11) mm. Flowers green-and-white, fragrance faint, harsh to honeylike, diurnal; sepals 3–5.5 × 1–2.5 mm; dorsal sepal green with white margins, elliptic-lanceolate; lateral sepals spreading to recurved, white, lanceolate; petals erect-recurved, green with broad outer, narrow inner white borders, lanceolate, falcate, 3–5 × 1.5 mm, inner margins often forming U, apices often connivent; lip recurved, triangular-lanceolate, 2.5–5 × 1.2–2.5 mm; spur deflexed, 2–5 mm; viscidia ovate to broadly elliptic, 0.4–0.5 × 0.3–0.4 mm; rostellum blunt. Capsules 5–9 mm. Seeds cinnamon brown.


Phenology: Flowering late May–early Aug.
Habitat: Monterey pine forest, maritime chaparral
Elevation: 0–150 m

Discussion

Of conservation concern.

Piperia yadonii, a narrow endemic (Monterey Bay area), bears a superficial resemblance to P. elegans. Much of the P. yadonii habitat has been preempted for residential and golf course development.

Selected References

None.

Lower Taxa

None.
... more about "Piperia yadonii"
self-pollination +
James D. Ackerman +  and Randall Morgan +
Rand. Morgan & Ackerman +
indehiscent +
simple +  and sessile +
conduplicate +  and plicate +
11 cm110 mm <br />0.11 m <br /> (17 cm170 mm <br />0.17 m <br />) +
lanceolate +  and oblanceolate +
2.2cm;3.9cm +
0.8 cm8 mm <br />0.008 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (?) +  and 0.9 cm9 mm <br />0.009 m <br /> (?) +
inconspicuous +
parallel +  and close +
0–150 m +
green-and-white +
harsh +  and honeylike +
ellipsoid;sausage-shaped +
Monterey pine forest, maritime chaparral +
15 cm150 mm <br />0.15 m <br /> (30 cm300 mm <br />0.3 m <br />) +
lateral +  and terminal +
5 cm50 mm <br />0.05 m <br /> (15 cm150 mm <br />0.15 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
falcate +  and lanceolate +
spreading +  and recurved +
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 />) +
triangular-lanceolate +
larger +
0.12 cm1.2 mm <br />0.0012 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 +
erect-recurved +
Flowering late May–early Aug. +
spicate +  and many-flowered +
aerial +  and subterranean +
minute +
free +, distinct +, adnate +  and connate +
foliaceous +
not +  and alike +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Endemic +  and Conservation concern +
clavate +  and filiform +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
pendent +  and erect +
proliferous +
attenuate +
thickened +  and stout +
Piperia yadonii +
species +
ellipsoid-ovoid +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
ovate +  and broadly elliptic +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
aquatic +, lithophytic +, terrestrial +  and epiphytic +
saprophytic +, photosynthetic +  and mycotrophic +