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Nuttallanthus texanus

Higher Taxonomy
Family: PlantaginaceaeView DescriptionDichotomous Key

Habit: Annual to shrub, some aquatic. Leaf: basal or cauline, alternate or opposite (whorled), simple, entire to dentate or lobed, venation generally pinnate; stipules 0. Inflorescence: raceme, spike, or flowers axillary in 1--few-flowered clusters; flowers few to many, each subtended by 1 bract. Flower: unisexual or bisexual, radial or bilateral; sepals 4--5, generally fused at base; corolla 4--5-lobed, scarious or not, persistent or not, generally 2-lipped, upper lip generally 2-lobed, lower generally 3-lobed, spur present or not, tube sac-like at base or not; stamens 2 or 4, alternate corolla lobes, epipetalous, staminode 0 or 1--2, anthers opening by 2 slits; ovary superior, [1]2--4-chambered, style 1, stigma lobes 0 or 2. Fruit: generally a capsule, septicidal, loculicidal, circumscissile, or dehiscing by terminal slits or pores.
Genera In Family: 110 genera, +- 2000 species: worldwide, especially temperate. Note: Veronicaceae sensu Olmstead et al. Recently treated to include Callitrichaceae, Hippuridaceae, and most non-parasitic California genera of Scrophulariaceae (except Buddleja, Limosella, Mimulus, Myoporum, Scrophularia, Verbascum). California Maurandya moved to Holmgrenanthe and Maurandella. Limnophila ×ludoviciana Thieret an occasional agricultural weed in rice fields. Hebe ×franciscana (Eastw.) Souster, Hebe speciosa (R. Cunn.) Andersen only cultivated.
eFlora Treatment Author: Margriet Wetherwax, except as noted
Scientific Editor: Robert Patterson, Bruce G. Baldwin.
Genus: NuttallanthusView Description 

Habit: Annual to biennial. Stem: erect, simple or branched at base. Leaf: on flower stem generally alternate, sessile, linear, entire to dentate, pinnately veined; on non-flowering stems whorled, generally wider. Inflorescence: raceme, terminal; bracts reduced, alternate. Flower: calyx lobes 5, deep, +- equal; corolla 5-lobed, unequally 2-lipped, lower lip >> upper, lower side of tube spurred at base or spur 0, lower side of throat swollen, +- hairy, +- closing corolla proximal to lips; stamens 4, in 2 pairs, included; stigma small, unlobed. Fruit: dehiscent by slits into chambers near tip, +- spheric. Seed: many, prismatic, 4--7-angled, faces smooth or tubercled.
Species In Genus: 4 species: North America, South America, introduced elsewhere. Etymology: (Thomas Nuttall, English naturalist, 1786--1859)
eFlora Treatment Author: Robert E. Preston & Margriet Wetherwax

Nuttallanthus texanus (Scheele) D.A. Sutton
Habit: Generally glabrous. Stem: 10--60 cm, slender, with decumbent non-flowering shoots. Leaf: 5--25 mm, narrowly linear, obtuse. Inflorescence: raceme, dense in flower, open in fruit, +- glandular-puberulent; pedicels 1.5--6 mm, > bracts; flowers opening or cleistogamous. Flower: calyx +- 3 mm, lobes lance-linear, tips acute; corolla 10--24 mm (including spur), violet to blue, lips spreading, lower lip 6--11 mm, >> upper, throat swelling +- obscure, white-ridged, spur 6--11 mm, straight or curved, slender. Fruit: +- 3 mm. Seed: 0.5 mm, faces +- tubercled. Chromosomes: n=12.
Ecology: Sand or gravel; Elevation: < 1800 m. Bioregional Distribution: NW (exc NCoRH), SNF, GV, CW, SW (exc SnBr, SnJt), DMtns (Granite Mtns, w San Bernardino Co.); Distribution Outside California: southwestern and south-central United States, Mexico, temperate South America. Flowering Time: Mar--May
Synonyms: Linaria canadensis (L.) Dum.Cours. var. texana (Scheele) Pennell; Linaria canadensis (L.) Chaz., in part, misappl.
eFlora Treatment Author: Robert E. Preston & Margriet Wetherwax
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botanical illustration including Nuttallanthus texanus


Citation for this treatment: Robert E. Preston & Margriet Wetherwax 2016. Nuttallanthus texanus, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 04, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 04, 2016.

Nuttallanthus texanus
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© 2009 Keir Morse
Nuttallanthus texanus
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© 2009 Neal Kramer
Nuttallanthus texanus
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© 2013 Keir Morse
Nuttallanthus texanus
click for enlargement
© 2009 Keir Morse
Nuttallanthus texanus
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© 2006 Steve Matson
Nuttallanthus texanus
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© 2006 Steve Matson

More photos of Nuttallanthus texanus in CalPhotos

Geographic subdivisions for Nuttallanthus texanus:
NW (exc NCoRH), SNF, GV, CW, SW (exc SnBr, SnJt), DMtns (Granite Mtns, w San Bernardino Co.);
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.
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).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

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