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
Sida spinosa
PRICKLY SIDA

Higher Taxonomy
Family: MalvaceaeView DescriptionDichotomous Key

Common Name: MALLOW FAMILY
Habit: Annual to tree; generally with stellate hairs, often with bristles or peltate scales; juice generally mucilage-like; bark fibrous. Leaf: generally cauline, alternate, petioled, simple [palmate-compound], generally palmate-lobed and/or veined, generally toothed, evergreen or not; stipules persistent or not. Inflorescence: head, spike, raceme, or panicle, in panicle or not (a compound panicle), or flowers >= 1 in leaf axils, or flowers generally 1 opposite a leaf or on a spur; bracts leaf-like or not; bractlets 0 or on flowering stalks, often closely subtending calyx, generally in involucel. Flower: generally bisexual, radial; sepals 5, generally fused at base, abutting in bud, larger in fruit or not, nectaries as tufts of glandular hairs at base; petals (0)5, free from each other but generally fused at base to, falling with filament tube, clawed or not; stamens 5--many, filaments fused for most of length into tube around style, staminodes 5, alternate stamens, or generally 0; pistil 1, ovary superior, stalked or generally not, chambers generally >= 5, styles or style branches, stigmas generally 1 or 1--2 × chamber number. Fruit: loculicidal capsule, [berry], or 5--many, disk- or wedge-shaped segments (= mericarps).
Genera In Family: 266 genera, 4025 species: worldwide, especially warm regions; some cultivated (e.g., Abelmoschus okra; Alcea hollyhock; Gossypium cotton; Hibiscus hibiscus). Note: Recently treated to include Bombacaceae, Sterculiaceae, Tiliaceae. Mature fruit needed for identification; "outer edges" are surfaces between sides and back (abaxial surface) of segment. "Flower stalk" used instead of "pedicel," "peduncle," especially where both needed (i.e., when flowers both 1 in leaf axils and otherwise).
eFlora Treatment Author: Steven R. Hill, except as noted
Scientific Editor: Steven R. Hill, Thomas J. Rosatti.
Genus: SidaView DescriptionDichotomous Key

Habit: Annual [perennial herb, shrub], [glabrous or] hairy. Leaf: petioled to subsessile; blade generally unlobed (to palmate-lobed), generally dentate. Inflorescence: flowers 1--several in leaf axils; flowering stalks often jointed; bractlets 0. Flower: petals pale- to orange-yellow [white]; stigmas head-like. Fruit: segments generally 5--15, indehiscent, side walls firm, persistent, beaks generally 2, prominent. Seed: 1 per segment, not enclosed by net-veined envelope.
Species In Genus: 150 species: tropics, subtropics, especially America. Etymology: (Greek: used by Theophrastus for other pl, applied to these by Linnaeus) Note: Sida abutifolia Mill. reported as possibly naturalized in California.
eFlora Treatment Author: Steven R. Hill

Sida spinosa L.
AGRICULTURAL WEED
Habit: Annual, stellate-puberulent. Stem: 3--10 dm, stiff, straight, branches ascending. Leaf: blade 2--4 cm, serrate, minutely stellate-puberulent, paler abaxially, glabrous adaxially. Inflorescence: flowers 1--several in leaf axils. Flower: calyx 5--7 mm, puberulent; petals +- 5 mm, > calyx; filament tube 2 mm, glabrous; styles 5, stigmas head-like. Fruit: 4--5 mm diam, +- glabrous. Chromosomes: 2n=14,28.
Ecology: Scarce; in disturbed places, fields; Elevation: generally < 300 m. Bioregional Distribution: SnJV; Distribution Outside California: southern, central and eastern United States to southern South America; widely introduced worldwide. Flowering Time: Jun--Oct? Note: Generally an agricultural weed; often grows with Hibiscus trionum, Gossypium; apparently reported from Fresno County; included as a possible waif, despite apparent lack of specimens from California, due to likelihood of occurrence there.
eFlora Treatment Author: Steven R. Hill
Jepson Online Interchange

Previous taxon: Sida rhombifolia
Next taxon: Sidalcea

Name Search

Contact/Feedback

Citation for this treatment: Steven R. Hill 2016. Sida spinosa, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=44401, accessed on February 09, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 09, 2016.


Geographic subdivisions for Sida spinosa:
SnJV;
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.
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.