Jepson eFlora: Taxon page
Key to families | Table of families and genera
Previous taxon Index to 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 |
Next taxon
Plagiobothrys tener var. tener

Higher Taxonomy
Family: BoraginaceaeView DescriptionDichotomous Key

Common Name: BORAGE or WATERLEAF FAMILY
Habit: Annual to shrub or small tree, or non-green root parasite, often bristly or sharp-hairy. Stem: prostrate to erect. Leaf: basal and/or cauline, generally simple, generally alternate. Inflorescence: generally cymes, or panicle-, raceme-, head-, or spike-like, generally coiled in flower (often described as scorpioid), generally elongating in fruit, or flowers 1--2 per axil. Flower: bisexual, generally radial; sepals (4)5(10), fused at least at base, or free; corolla (4)5(10)-lobed, salverform, funnel-shaped, rotate, or bell-shaped, generally without scales at tube base, with 0 or 5 appendages at tube top, alternate stamens; stamens epipetalous; ovary generally superior, entire to 4-lobed, style 1(2), entire or 2-lobed or -branched. Fruit: valvate or circumscissile capsule or nutlets 1--4, free (fused), smooth to roughened, prickly or bristly or not.
Genera In Family: +- 120 genera, +- 2300 species: tropics, temperate, especially western North America, Mediterranean; some cultivated (Borago, Heliotropium, Echium, Myosotis, Nemophila, Phacelia, Symphytum, Wigandia). Toxicity: Many genera may be TOXIC from pyrrolizidine alkaloids or accumulated nitrates. Note: Recently treated to include Hydrophyllaceae, Lennoaceae. Wigandia urens added, as naturalized.
eFlora Treatment Author: Ronald B. Kelley, Robert Patterson, Richard R. Halse & Timothy C. Messick, family description, key to genera; treatment of genera by Ronald B. Kelley, except as noted
Scientific Editor: Ronald B. Kelley, Robert Patterson, Thomas J. Rosatti, Bruce G. Baldwin, David J. Keil.
Genus: PlagiobothrysView DescriptionDichotomous Key

Common Name: POPCORNFLOWER
Habit: Annual (perennial herb), generally strigose to spreading-hairy; fibrous- to taprooted, staining red dye present or not. Stem: branched at base or above, < 5 dm. Leaf: cauline or basal and cauline, 0.5--10 cm, generally smaller tipward, linear to oblanceolate. Inflorescence: raceme- or spike-like cymes, coiled in bud, generally elongate in fruit; bracts 0--many. Flower: calyx lobes fused below middle, 2--10 mm in fruit; corolla rotate to funnel-shaped or cylindric, white or white with yellow area, tube generally +- yellow inside, limb 1--12 mm diam, appendages prominent to minute, white to yellow. Fruit: nutlets generally 4, +- ovate (triangular to +- lanceolate), rarely on narrow stalk or short peg, variously roughened, abaxially generally with central ridge, lateral ridges, cross-ribs, generally tubercled, occasionally prickly or bristly; adaxially keeled above attachment scar, scar on side generally near middle to base, sometimes on bottom or oblique (on angle between side and bottom), generally raised.
Species In Genus: +- 65 species: temperate western North America, western South America, northeastern Asia, Australia. Etymology: (Greek: sideways pit, from position of nutlet attachment scar) Note: Nutlet characters in key generally best for 3 nutlets farthest from stem; yellow on corolla changes to white after pollination.
Unabridged Note: Fully mature nutlets needed for identification; in many species nutlet closest to stem often more firmly attached, larger, differently textured, and with completely different attachment scar than other 3; nutlet characters used in key focus on 3 more loosely attached nutlets. Intergradation common in some species groups; reticulate speciation in genus; sect. Allocarya often treated as separate genus; many species need study. Corolla size can diminish markedly during flower period. Yellow corolla appendages and, if present, contrasting yellow corolla centers, change to white after successful pollination.
Species: Plagiobothrys tenerView Description 

Common Name: SLENDER POPCORNFLOWER
Habit: Annual. Stem: 1--several, generally erect to occasionally prostrate, 1--3 dm, branched at base. Leaf: cauline few, lower 2--6 cm. Inflorescence: bracts 0 (or near base); pedicel elongating < 5 mm. Flower: +- fragrant; calyx 1--3 mm, base +- 4-ridged in fruit, lobes oblong to +- spoon-shaped, cupped; corolla limb 3--9 mm diam, appendages yellow. Fruit: nutlet 1.1--1.8 mm, lance-ovate, dull, tan to black, firmly attached; abaxial ridge, lateral ridges generally obscure, cross-ribs generally above middle, low to prominent, irregular, +- toothed, interspaces wide, tubercled or coarse-granular, often bristly; scar generally near base, occasionally +- oblique, narrow-ovate to triangular.

Unabridged Note: Fruit variable. See note for Plagiobothrys tener var. tener.

Plagiobothrys tener (Greene) I.M. Johnst. var. tener
NATIVE
Habit: Sparse-strigose, not glaucous, not fleshy. Stem: spreading to erect. Leaf: sparse-strigose. Inflorescence: pedicel 1--5 mm. Flower: calyx 1--3 mm, strigose, not appressed to stem, lobes +- spreading to ascending in fruit; corolla limb 4--9 mm diam. Fruit: nutlet 1.2--1.8 mm, brown; scar generally near base, occasionally oblique, narrow-ovate to triangular.
Ecology: Wet places, vernal pools in chaparral, oak woodland, conifer forest; Elevation: 160--1340 m. Bioregional Distribution: NCoR, CaR, w MP. Flowering Time: Apr--Jul
Unabridged Note: Oblique nutlet scar uniform in some low elevation populations in Shasta Co. (CaRF); nutlet texture +- granular both abaxially, adaxially; study needed.
eFlora Treatment Author: Ronald B. Kelley, Robert Patterson, Richard R. Halse & Timothy C. Messick, family description, key to genera; treatment of genera by Ronald B. Kelley
Jepson Online Interchange

Previous taxon: Plagiobothrys tener var. subglaber
Next taxon: Plagiobothrys torreyi

Name Search

Contact/Feedback

Citation for this treatment: Ronald B. Kelley, Robert Patterson, Richard R. Halse & Timothy C. Messick, family description, key to genera; treatment of genera by Ronald B. Kelley 2016. Plagiobothrys tener var. tener, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=63909, accessed on August 25, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on August 25, 2016.


Plagiobothrys tener var. tener
click for enlargement
© 2011 Steve Matson
Plagiobothrys tener var. tener
click for enlargement
© 2011 Steve Matson
Plagiobothrys tener var. tener
click for enlargement
© 2011 Steve Matson
Plagiobothrys tener var. tener
click for enlargement
© 2011 Steve Matson
Plagiobothrys tener var. tener
click for enlargement
© 2011 Steve Matson
Plagiobothrys tener var. tener
click for enlargement
© 2011 Steve Matson

More photos of Plagiobothrys tener var. tener in CalPhotos


Geographic subdivisions for Plagiobothrys tener var. tener:
NCoR, CaR, w MP.
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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.