Jepson eFlora: Taxon page
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Solanum rostratum
BUFFALOBUR

Higher Taxonomy
Family: SolanaceaeView DescriptionDichotomous Key

Common Name: NIGHTSHADE FAMILY
Habit: Annual to shrub. Leaf: generally simple, generally alternate, generally petioled; stipules 0; blade entire to deeply lobed. Inflorescence: various. Flower: bisexual; calyx lobes generally 5; corolla +- radial, cylindric to rotate, lobes generally 5; stamens 5, on corolla tube, alternate lobes; ovary superior, generally 2-chambered, style 1. Fruit: berry, loculicidal or septicidal capsule, [(drupe)], 2--5-chambered.
Genera In Family: 75 genera, 3000 species: worldwide, especially +- tropics; many alien weeds in California; many cultivated for food, drugs, or ornamental (potato, tomato, peppers, tobacco, petunia). Toxicity: many TOXIC. Note: Nicandra physalodes (L.) Gaertn. is a waif.
eFlora Treatment Author: Michael H. Nee
Scientific Editor: Thomas J. Rosatti.
Genus: SolanumView DescriptionDichotomous Key

Common Name: NIGHTSHADE
Habit: Annual to shrub, vine or not, prickly or not, often glandular. Leaf: alternate to +- opposite, often unequal, entire to deeply pinnately lobed. Inflorescence: panicle or umbel-like, often 1-sided. Flower: calyx +- bell-shaped; corolla +- rotate, white to purple (yellow), lobes generally of different color toward base of midrib, generally without spots at base; anthers free, > filaments, oblong or tapered, opening by 2 pores or short slits near tip, in age often splitting to base; ovary 2-chambered, style 1, generally +- straight, stigma head-like. Fruit: berry, generally spheric, fleshy (or dry, capsule-like). Seed: many, compressed, generally reniform.
Species In Genus: +- 1500 species: worldwide, especially tropical America. Etymology: (Latin: quieting, from narcotic properties) Toxicity: many TOXIC. Note: Many cultivated for food (including potato, Solanum tuberosum), ornamental; Solanum dimidiatum in California an urban weed. See Lycopersicon for other taxa recently included here.

Solanum rostratum Dunal
NATURALIZED
Habit: Annual 1--7 dm, densely prickly, hairs stellate. Leaf: 5--15 cm, lobes +- to midrib. Inflorescence: raceme-like. Flower: calyx 6--7 mm, tightly enclosing fruit, prickly; corolla 23--35 mm wide, yellow; anthers unequal (4 straight, 6--8 mm; 1 curved, 10--14 mm); style curved. Fruit: 9--12 mm, +- dry. Seed: 2--2.5 mm. Chromosomes: n=12.
Ecology: Disturbed places, roadsides, fields; Elevation: < 1400 m. Bioregional Distribution: s NCoRO, CaRF, GV, CCo, s SCoRO, SCo, MP; Distribution Outside California: to eastern United States, Mexico; native to Great Plains. Flowering Time: May--Sep
eFlora Treatment Author: Michael H. Nee
Jepson Online Interchange
Weed listed by Cal-IPC

Previous taxon: Solanum physalifolium var. nitidibaccatum
Next taxon: Solanum sisymbriifolium

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botanical illustration including Solanum rostratum

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Citation for this treatment: Michael H. Nee 2016. Solanum rostratum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=44902, accessed on February 10, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 10, 2016.


Solanum rostratum
click for enlargement
© 2001 Larry Blakely
Solanum rostratum
click for enlargement
© 2015 Barry Breckling
Solanum rostratum
click for enlargement
© 2001 Larry Blakely
Solanum rostratum
click for enlargement
© 2015 Barry Breckling
Solanum rostratum
click for enlargement
© 1999 Larry Blakely
Solanum rostratum
click for enlargement
© 2001 Larry Blakely

More photos of Solanum rostratum in CalPhotos


Geographic subdivisions for Solanum rostratum:
s NCoRO, CaRF, GV, CCo, s SCoRO, SCo, MP;
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.
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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.