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|Family: Melanthiaceae||View Description||Dichotomous Key|
|Genus: Pseudotrillium||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Pseudotrillium rivale (S. Watson) S.B. Farmer
Stem: 0.5--2 dm. Leaf: 3, in 1 whorl subtending flower, petioled (subsessile), blade 1.7--11 cm, lanceolate to cordate, acute to acuminate, leathery. Inflorescence: flowers 1 per stem; peduncle generally erect as flower opens, becoming recurved and continuing to elongate below bracts after pollination until ovary contacts soil. Flower: bisexual; sepals 1--2 cm, 4--11 mm wide, lanceolate or ovate to oblong; petals 1.5--3 cm, 0.8--1.9 cm wide, ovate-cordate, white (pink), generally purple-spotted; stamens 6, 6--15 mm; ovary chambers 3 stigmas 3, recurved. Fruit: capsule, berry-like, +- pulpy, rarely dehiscent, generally shed as a unit. Chromosomes: n=5.
Ecology: Yellow-pine forest along rocky streambanks and in Darlingtonia bogs, generally serpentine; Elevation: 40--1500 m. Bioregional Distribution: KR; Distribution Outside California: southwestern Oregon. Flowering Time: Apr--Jun
Synonyms: Trillium rivale S. Watson
eFlora Treatment Author: Dale W. McNeal
Jepson Online Interchange
Previous taxon: Pseudotrillium
Next taxon: Stenanthium
Citation for this treatment: Dale W. McNeal 2017. Pseudotrillium rivale, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=82514, accessed on April 23, 2017.
Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora, http://ucjeps.berkeley.edu/eflora/, accessed on April 23, 2017.