Piperia transversa

Suksdorf

Allg. Bot. Z. Syst. 12: 43. 1906.

Endemic
Treatment appears in FNA Volume 26. Treatment on page 573. Mentioned on page 572, 577.

Plants 12–57 cm. Stems basally swollen above tuberoid, 0.7–4.5 mm diam. distal to leaves; bracts 3–15. Leaves prostrate; blade 6–19 × 1–4.5 cm. Inflorescences ± densely flowered, 3.5–32 cm; rachis ± length of peduncle; bracts 3–12 mm. Flowers ± white with green or yellow-green midveins, fragrance nocturnal, strong, clovelike; sepals 2.5–4.5 × 1–2 mm; dorsal sepal projecting forward between petals, oblong to lanceolate; lateral sepals reflexed-spreading, obliquely oblong-lanceolate; petals reflexed-spreading, oblique to falcate, oblong, 2–5 × 1–2 mm; lip straight to ± deflexed, oblong to ovate-elliptic, 2.2–5.3 × 1–2.5 mm; spur ± horizontal, straight, 7–12 mm; viscidia oblong, 0.5–0.7 × 0.2–0.3 mm; rostellum blunt. Capsules 4–13 mm. Seeds cinnamon brown. 2n = 42.


Phenology: Flowering late May–Aug.
Habitat: Conifer and mixed evergreen forest, oak woodlands, chaparral
Elevation: 0–2600 m

Distribution

V26 1168-distribution-map.jpg

B.C., Calif., Oreg., Wash.

Discussion

Piperia transversa is pollinated by geometrid moths (J. D. Ackerman 1977).

Selected References

None.

Lower Taxa

None.
... more about "Piperia transversa"
self-pollination +
James D. Ackerman +  and Randall Morgan +
Suksdorf +
indehiscent +
simple +  and sessile +
conduplicate +  and plicate +
6 cm60 mm <br />0.06 m <br /> (19 cm190 mm <br />0.19 m <br />) +
lanceolate +  and oblanceolate +
1cm;4.5cm +
0.4 cm4 mm <br />0.004 m <br /> (?) +  and 1.3 cm13 mm <br />0.013 m <br /> (?) +
inconspicuous +
parallel +  and close +
B.C. +, Calif. +, Oreg. +  and Wash. +
0–2600 m +
clovelike +
ellipsoid;sausage-shaped +
Conifer and mixed evergreen forest, oak woodlands, chaparral +
lateral +  and terminal +
3.5 cm35 mm <br />0.035 m <br /> (32 cm320 mm <br />0.32 m <br />) +
reflexed-spreading +
oblong-lanceolate +
petiolate +, sessile +  and simple +
duplicate +, convolute +, whorled +, opposite +, distichous +  and alternate +
ephemeral +
cauline +  and basal +
2 (?) +  and 6 (?) +
reduced +
straight +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.53 cm5.3 mm <br />0.0053 m <br />) +
oblong +  and ovate-elliptic +
larger +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
differing in form and color +
yellow-green +  and green +
1-many-flowered +  and cymose +
pendent +  and erect +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
reflexed-spreading +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Flowering late May–Aug. +
Allg. Bot. Z. Syst. +
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 /> (0.2 cm2 mm <br />0.002 m <br />) +
straight +
clavate +  and filiform +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
pendent +  and erect +
proliferous +
swollen +
thickened +  and stout +
Piperia transversa +
species +
ellipsoid-ovoid +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
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 +