Directory       News       Site Map       Home
         
    Jepson eFlora: Taxon page
Key to families | Table of families and genera

Previous taxon Indexes to all accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Previous taxon

MELANTHIACEAE FALSE-HELLEBORE FAMILY

Dale W. McNeal, except as noted

Perennial herb, from rhizome or bulb, or rhizomes ending in weakly developed bulbs, scapose or not. Leaf: alternate, whorled, or mostly basal and spirally arranged, deciduous after 1 year or not. Inflorescence: raceme, panicle, or flowers 1. Flower: perianth parts 6, in 2 petal-like whorls or of sepals and petals, free or fused below, ± spreading; stamens 6, from perianth, anthers attached at base or near middle; ovary superior or partly inferior, chambers 3, styles 3, persistent. Fruit: capsule, loculicidal or septicidal.
10 genera, 130 species: northern hemisphere. W North America Zigadenus moved to Toxicoscordion. —Scientific Editors: Dale W. McNeal, Thomas J. Rosatti.

Key to Melanthiaceae

TRILLIUM WAKEROBIN, TRILLIUM

Dale W. McNeal & Bryan D. Ness

Rhizome short, thick, spreading to erect. Stem: erect, >=1 per rhizome. Leaf: 3, in 1 whorl subtending flower, sessile or subsessile, ± ovate. Inflorescence: flowers 1 per stem, erect to nodding, stalked or sessile. Flower: bisexual; sepals 3, free, persistent, ± green; petals 3, free, withering, white, ± pink, ± yellow, or purple; stamens 6; ovary chambers 3, styles 3. Fruit: capsule, ± berry-like. Seed: many, ovoid.
± 30–40 species: North America, Asia. (Latin: 3, from leaves) [Farmer 2006 Aliso 22:579–592; Freeman 1975 Brittonia 27:1–62] Trillium rivale moved to Pseudotrillium.

Key to Trillium

T. albidum J.D. Freeman
NATIVE
Stem: 2–6 dm. Leaf: sessile, 7–20 cm, 12–15 cm wide, rounded to obtuse at tip, generally weakly ± brown- or green-spotted. Flower: sessile; odor generally sweet rose-like or ± spicy; sepals spreading, 3–6.5 cm, lanceolate; petals erect to ascending, 4–8 cm, oblanceolate to obovate, white to ± pink, base occasionally ± purple; stamens 15–25 mm, tissue between anther sacs ± green; ovary ± green (± purple). Fruit: green or ± purple, pulpy, juicy.
n=5. Common. Edges of redwood or mixed-evergreen forest, coastal scrub, chaparral, moist canyon slopes, ravine banks; < 2000 m. Northwestern California, Cascade Range, n Sierra Nevada, San Francisco Bay Area; to Washington. Feb–Jun [Online Interchange]

Previous taxon: Trillium
Next taxon: Trillium angustipetalum

Contact/Feedback

Name search

Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Aug 29 2014
Citation for this treatment: [Author of taxon treatment] 2013. Trillium, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=47214, accessed on Aug 29 2014

Copyright © 2014 Regents of the University of California
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.


click for enlargement Trillium albidum
See CalPhotos for additional images
© 2007 Neal Kramer

Geographic subdivisions indicated for the distribution of Trillium albidum 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.
READ ABOUT YELLOW FLAGS
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).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

 

CCH collections by month

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