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Piperia transversa
FLAT SPURRED PIPERIA

Higher Taxonomy
Family: OrchidaceaeView DescriptionDichotomous Key

Common Name: ORCHID FAMILY
Habit: Perennial herb, terrestrial [growing on other pls], non-green (nutrition from association of roots with fungi) or green, generally from rhizomes or tubers with few to many fleshy to slender roots; cauline leaves +- reduced to sheathing stem bracts or not. Leaf: 1--many, basal to cauline, linear to +- round, alternate to opposite (if only 1 pair), generally sessile. Inflorescence: flowers 1--many, spike or raceme, bracted. Flower: bisexual, bilateral, in bud generally rotating 180° by twisting ovary (position of parts indicated after twisting); sepals generally 3, generally free, generally petal-like, uppermost generally erect, lateral with chin- or spur-like projection (mentum) or not; petals 3, 1 (lip) different, spurred or not; stamens generally 1 (3 in Cypripedium, 2 functional, 1 a staminode), fused with style, stigma into column, pollen generally lumped, generally removed as unit by insect; ovary inferior, 1-chambered, placentas 3, parietal, stigma 3 lobed, generally under column tip. Fruit: capsule. Seed: many, minute.
Genera In Family: +- 800 genera, +- 25000 species: especially tropics (worldwide except Antarctica). Many cultivated for ornamental, especially Cattleya, Cymbidium, Epidendrum, Oncidium, Paphiopedilum; Vanilla planifolia Andrews fruits used to flavor food. Note: Platanthera may be paraphyletic without inclusion of Piperia (Bateman et al. 2009 Ann Bot 104:431--445); study needed.
eFlora Treatment Author: Ronald A. Coleman, Dieter H. Wilken & William F. Jennings, except as noted
Scientific Editor: Ronald A. Coleman, Thomas J. Rosatti.
Genus: PiperiaView DescriptionDichotomous Key

Common Name: PIPERIA
Habit: Plant 10--130 cm; tubers, 1--4 cm, generally +- round; stem bracts lance-linear to ovate. Leaf: at flower 0 or +- basal, not in rosette, 2--5, linear to widely oblanceolate. Inflorescence: spike or raceme, generally cylindric, flowers not in spiral; flower bract generally < flower. Flower: fragrance, when present, generally at night; perianth white to green; sepals generally 2--5 mm, 1--2 mm wide, 1-veined, upper pointed forward to erect, lower free, spreading to reflexed; lateral petals +- = sepals, spreading to erect, lip spurred, pointed forward, down (or upcurved); column < lip; ovary inferior, generally twisted 180°. Fruit: ascending to erect.
Species In Genus: 10 species: North America. Etymology: (Charles V. Piper, American botanist, 1867--1926) Note: Some species difficult to separate.
eFlora Treatment Author: James D. Ackerman & Robert Lauri

Piperia transversa Suksd.
NATIVE
Habit: Plant 12--57 cm. Leaf: basal 6--19 cm, 10--45 mm wide. Inflorescence: 7--26 cm, +- dense. Flower: fragrance clove-like; sepals, lateral petals white to +- yellow with green midvein; upper sepal pointed forward; lateral petals spreading, +- curved back, lip 2.2--5.3 mm, oblong to +- ovate, pointed forward or down, white, spur 6--12 mm, +- straight, perpendicular to inflorescence axis. Chromosomes: 2n=42.
Ecology: Generally dry sites, scrub, oak woodland, mixed-evergreen or conifer forest; Elevation: < 2600 m. Bioregional Distribution: NW, CaR, SN, CW, TR, PR; Distribution Outside California: to British Columbia. Flowering Time: May--Aug
eFlora Treatment Author: James D. Ackerman & Robert Lauri
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Previous taxon: Piperia michaelii
Next taxon: Piperia unalascensis

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botanical illustration including Piperia transversa

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Citation for this treatment: James D. Ackerman & Robert Lauri 2016. Piperia transversa, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=38359, accessed on February 05, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 05, 2016.


Piperia transversa
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© 2012 Neal Kramer
Piperia transversa
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© 2015 Aaron Schusteff
Piperia transversa
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© 2012 Neal Kramer
Piperia transversa
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© 2010 Barry Breckling
Piperia transversa
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© 2003 George W. Hartwell
Piperia transversa
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© 2015 Aaron Schusteff

More photos of Piperia transversa in CalPhotos


Geographic subdivisions for Piperia transversa:
NW, CaR, SN, CW, TR, PR;
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.