Jepson eFlora: Taxon page
Key to families | Table of families and genera | Map
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 stipitatus var. micranthus

Higher Taxonomy
Family: BoraginaceaeView DescriptionDichotomous Key

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

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.
eFlora Treatment Author: Ronald B. Kelley
Species: Plagiobothrys stipitatusView Description 

Habit: Annual, short-strigose. Stem: ascending to erect, 1--5 dm, often fleshy, +- hollow. Leaf: cauline, lower 2--11 cm, hairs +- blister-based. Inflorescence: +- open, bracts below middle; pedicels 0--3 mm, generally solid, +- elongating. Flower: calyx 3 mm, 5--8 mm in fruit, narrow, lobes spreading to erect, linear to lanceolate, midveins thick; corolla limb 2--12 mm diam, appendages yellow. Fruit: nutlet 1--2 mm, lanceolate to lance-ovate, +- flat, +- dull, tan, attached +- loosely; abaxial ridge narrow, obscure below middle, cross-ribs +- above middle, rounded, wrinkled, +- flat below, tubercled; margins rounded, obscure, not entire; adaxial ridge deep-V-shaped, tubercled; scar basal (+- oblique), on short peg.
Note: Varieties intergrade in SnJV.

Plagiobothrys stipitatus var. micranthus (Piper) I.M. Johnst.
Flower: corolla limb 2--4 mm diam.
Ecology: Common. Vernal pools, wet sites in grassland, conifer forest, sagebrush scrub; Elevation: < 2130 m. Bioregional Distribution: KR, NCoR, CaR, SNF, n&c SNH, GV, SnFrB, SCoR, PR, GB; Distribution Outside California: southeastern Oregon, western Nevada. Flowering Time: Apr--Jul
Unabridged Note: Plants +- intermediate to Plagiobothrys bracteatus have been collected; those from Lake Co. with generally small fruit calyx, delicate growth habit need study.
eFlora Treatment Author: Ronald B. Kelley
Jepson Online Interchange

Previous taxon: Plagiobothrys stipitatus
Next taxon: Plagiobothrys stipitatus var. stipitatus

Name Search
botanical illustration including Plagiobothrys stipitatus var. micranthus


Citation for this treatment: Ronald B. Kelley 2017. Plagiobothrys stipitatus var. micranthus, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on October 17, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on October 17, 2017.

Plagiobothrys stipitatus var. micranthus
click for enlargement
© 2004 Carol W. Witham
Plagiobothrys stipitatus var. micranthus
click for enlargement
© 2011 Neal Kramer
Plagiobothrys stipitatus var. micranthus
click for enlargement
© 2015 Neal Kramer
Plagiobothrys stipitatus var. micranthus
click for enlargement
© 2017 Steve Matson
Plagiobothrys stipitatus var. micranthus
click for enlargement
© 2017 Steve Matson
Plagiobothrys stipitatus var. micranthus
click for enlargement
© 2011 Barry Rice

More photos of Plagiobothrys stipitatus var. micranthus in CalPhotos

Geographic subdivisions for Plagiobothrys stipitatus var. micranthus:
KR, NCoR, CaR, SNF, n&c SNH, GV, SnFrB, SCoR, PR, GB;
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.
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.