Jepson Flora Project: Jepson Interchange    

link to manual TREATMENT FROM THE JEPSON MANUAL (1993) previous taxon | next taxon
Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



Dieter H. Wilken and William F. Jennings

Perennial, terrestrial in CA, some nongreen, generally from rhizomes
Leaves linear to ± round or scale-like, generally sessile
Inflorescence: generally raceme or spike, bracted
Flower bisexual, bilateral, sometimes spurred; sepals generally 3, generally petal-like, generally free, uppermost generally erect; petals 3, lowest different ("lip"); stamen generally 1, fused with style and stigma into column, pollen generally sticky, generally removed as sessile anther sacs; ovary inferior, generally twisted 180° (so lip appears to be lowest perianth segment), 1-chambered, placentas 3, parietal; stigmas 3, generally under column tip
Fruit: capsule
Seeds very many, minute
Genera in family: ± 800 genera, ± 18,000 species: especially tropical (worldwide except deserts). Many cultivated for ornamental, especially Cattelya, Cymbidium, Epidendrum, Oncidium, Paphiopedalum; Vanilla planifolia fruits used as source of food flavoring
Reference: [Luer 1975 Orchids US and Can, NY Bot Garden; Coleman 1995 Wild Orchids of California, Cornell Univ.]
Nongreen plants derive nutrition through fungal intermediates.



Leaves basal and cauline, reduced upward, linear to oblong
Inflorescence: spike, generally dense, flowers in spiral ranks; bracts < to > flowers, gradually reduced upward
Flower: sepals and lateral petals narrowly lanceolate; upper sepal ± fused to lateral petals, together hood-like, enclosing column; lower sepals ± free, ± = lip, adherent to hood; lip deeply grooved below middle, concave above middle; column < lip, tip with anther on back
Fruit spreading to ascending
Species in genus: ± 40 species: especially Am, also Japan, Australia, New Zealand
Etymology: (Greek: coiled flowers)
Reference: [Sheviak 1990 Rhodora 92:213–231]


S. porrifolia Lindl.

Plant 18–56 cm
Leaves: basal 8–14 cm; cauline 1.5–10 cm
Inflorescence 5–14 cm; bracts 7–20 mm
Flower: perianth 7–12 mm, generally yellowish, sometimes cream; upper sepal and lateral petals fused ± < 1/2, fused portion cylindric, lobes spreading to recurved; lip ± ovate to lanceolate, tip puberulent above; column 2–4 mm
Ecology: Wet meadows, freshwater marshes, seeps
Elevation: < 2500 m.
Bioregional distribution: Northwestern California (except Inner North Coast Ranges), Cascade Range, Sierra Nevada, San Francisco Bay Area, San Gabriel Mountains, Peninsular Ranges
Distribution outside California: to Washington
Horticultural information: very DFCLT.

previous taxon | next taxon
bioregional map for SPIRANTHES%20porrifolia being generated

Retrieve Jepson Interchange Index to Plant Names entry for Spiranthes porrifolia
Retrieve dichotomous key for Spiranthes
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
Return to the Jepson Interchange main page
Return to treatment index page

University & Jepson Herbaria Home Page |
General Information | University Herbarium | Jepson Herbarium |
Visiting the Herbaria | On-line Resources | Research |
Education | Related Sites
Copyright © by the Regents of the University of California